diff --git a/client/src/main/java/com/alibaba/otter/canal/client/impl/SimpleCanalConnector.java b/client/src/main/java/com/alibaba/otter/canal/client/impl/SimpleCanalConnector.java
index 0f29794d..b7951912 100644
--- a/client/src/main/java/com/alibaba/otter/canal/client/impl/SimpleCanalConnector.java
+++ b/client/src/main/java/com/alibaba/otter/canal/client/impl/SimpleCanalConnector.java
@@ -159,7 +159,7 @@ public class SimpleCanalConnector implements CanalConnector {
             }
             //
             Handshake handshake = Handshake.parseFrom(p.getBody());
-            supportedCompressions.addAll(handshake.getSupportedCompressionsList());
+            supportedCompressions.add(handshake.getSupportedCompressions());
             //
             ClientAuth ca = ClientAuth.newBuilder()
                 .setUsername(username != null ? username : "")
diff --git a/client/src/test/java/com/alibaba/otter/canal/client/running/ClientRunningTest.java b/client/src/test/java/com/alibaba/otter/canal/client/running/ClientRunningTest.java
index cbdfd0ea..40755671 100644
--- a/client/src/test/java/com/alibaba/otter/canal/client/running/ClientRunningTest.java
+++ b/client/src/test/java/com/alibaba/otter/canal/client/running/ClientRunningTest.java
@@ -20,117 +20,117 @@ import com.alibaba.otter.canal.common.zookeeper.ZookeeperPathUtils;
 
 public class ClientRunningTest extends AbstractZkTest {
 
-    private ZkClientx zkclientx = new ZkClientx(cluster1 + ";" + cluster2);
-    private short     clientId  = 1001;
+	private ZkClientx zkclientx = new ZkClientx(cluster1 + ";" + cluster2);
+	private short     clientId  = 1001;
 
-    @Before
-    public void setUp() {
-        String path = ZookeeperPathUtils.getDestinationPath(destination);
-        zkclientx.deleteRecursive(path);
+	@Before
+	public void setUp() {
+		String path = ZookeeperPathUtils.getDestinationPath(destination);
+		zkclientx.deleteRecursive(path);
 
-        zkclientx.createPersistent(ZookeeperPathUtils.getClientIdNodePath(this.destination, clientId), true);
-    }
+		zkclientx.createPersistent(ZookeeperPathUtils.getClientIdNodePath(this.destination, clientId), true);
+	}
 
-    @After
-    public void tearDown() {
-        String path = ZookeeperPathUtils.getDestinationPath(destination);
-        zkclientx.deleteRecursive(path);
-    }
+	@After
+	public void tearDown() {
+		String path = ZookeeperPathUtils.getDestinationPath(destination);
+		zkclientx.deleteRecursive(path);
+	}
 
-    @Test
-    public void testOneServer() {
-        final CountDownLatch countLatch = new CountDownLatch(2);
-        ClientRunningMonitor runningMonitor = buildClientRunning(countLatch, clientId, 2088);
-        runningMonitor.start();
-        sleep(2000L);
-        runningMonitor.stop();
-        sleep(2000L);
+	@Test
+	public void testOneServer() {
+		final CountDownLatch countLatch = new CountDownLatch(2);
+		ClientRunningMonitor runningMonitor = buildClientRunning(countLatch, clientId, 2088);
+		runningMonitor.start();
+		sleep(2000L);
+		runningMonitor.stop();
+		sleep(2000L);
 
-        if (countLatch.getCount() != 0) {
-            Assert.fail();
-        }
-    }
+		if (countLatch.getCount() != 0) {
+			Assert.fail();
+		}
+	}
 
-    @Test
-    public void testMultiServer() {
-        final CountDownLatch countLatch = new CountDownLatch(30);
-        final ClientRunningMonitor runningMonitor1 = buildClientRunning(countLatch, clientId, 2088);
-        final ClientRunningMonitor runningMonitor2 = buildClientRunning(countLatch, clientId, 2089);
-        final ClientRunningMonitor runningMonitor3 = buildClientRunning(countLatch, clientId, 2090);
-        final ExecutorService executor = Executors.newFixedThreadPool(3);
-        executor.submit(new Runnable() {
+	@Test
+	public void testMultiServer() {
+		final CountDownLatch countLatch = new CountDownLatch(30);
+		final ClientRunningMonitor runningMonitor1 = buildClientRunning(countLatch, clientId, 2088);
+		final ClientRunningMonitor runningMonitor2 = buildClientRunning(countLatch, clientId, 2089);
+		final ClientRunningMonitor runningMonitor3 = buildClientRunning(countLatch, clientId, 2090);
+		final ExecutorService executor = Executors.newFixedThreadPool(3);
+		executor.submit(new Runnable() {
 
-            public void run() {
-                for (int i = 0; i < 10; i++) {
-                    if (!runningMonitor1.isStart()) {
-                        runningMonitor1.start();
-                    }
-                    sleep(2000L + RandomUtils.nextInt(500));
-                    runningMonitor1.stop();
-                    sleep(2000L + RandomUtils.nextInt(500));
-                }
-            }
+			public void run() {
+				for (int i = 0; i < 10; i++) {
+					if (!runningMonitor1.isStart()) {
+						runningMonitor1.start();
+					}
+					sleep(2000L + RandomUtils.nextInt(500));
+					runningMonitor1.stop();
+					sleep(2000L + RandomUtils.nextInt(500));
+				}
+			}
 
-        });
+		});
 
-        executor.submit(new Runnable() {
+		executor.submit(new Runnable() {
 
-            public void run() {
-                for (int i = 0; i < 10; i++) {
-                    if (!runningMonitor2.isStart()) {
-                        runningMonitor2.start();
-                    }
-                    sleep(2000L + RandomUtils.nextInt(500));
-                    runningMonitor2.stop();
-                    sleep(2000L + RandomUtils.nextInt(500));
-                }
-            }
+			public void run() {
+				for (int i = 0; i < 10; i++) {
+					if (!runningMonitor2.isStart()) {
+						runningMonitor2.start();
+					}
+					sleep(2000L + RandomUtils.nextInt(500));
+					runningMonitor2.stop();
+					sleep(2000L + RandomUtils.nextInt(500));
+				}
+			}
 
-        });
+		});
 
-        executor.submit(new Runnable() {
+		executor.submit(new Runnable() {
 
-            public void run() {
-                for (int i = 0; i < 10; i++) {
-                    if (!runningMonitor3.isStart()) {
-                        runningMonitor3.start();
-                    }
-                    sleep(2000L + RandomUtils.nextInt(500));
-                    runningMonitor3.stop();
-                    sleep(2000L + RandomUtils.nextInt(500));
-                }
-            }
+			public void run() {
+				for (int i = 0; i < 10; i++) {
+					if (!runningMonitor3.isStart()) {
+						runningMonitor3.start();
+					}
+					sleep(2000L + RandomUtils.nextInt(500));
+					runningMonitor3.stop();
+					sleep(2000L + RandomUtils.nextInt(500));
+				}
+			}
 
-        });
+		});
 
-        sleep(30000L);
-    }
+		sleep(30000L);
+	}
 
-    private ClientRunningMonitor buildClientRunning(final CountDownLatch countLatch, final short clientId,
-                                                    final int port) {
-        ClientRunningData clientData = new ClientRunningData();
-        clientData.setClientId(clientId);
-        clientData.setAddress(AddressUtils.getHostIp());
+	private ClientRunningMonitor buildClientRunning(final CountDownLatch countLatch, final short clientId,
+																									final int port) {
+		ClientRunningData clientData = new ClientRunningData();
+		clientData.setClientId(clientId);
+		clientData.setAddress(AddressUtils.getHostIp());
 
-        ClientRunningMonitor runningMonitor = new ClientRunningMonitor();
-        runningMonitor.setDestination(destination);
-        runningMonitor.setZkClient(zkclientx);
-        runningMonitor.setClientData(clientData);
-        runningMonitor.setListener(new ClientRunningListener() {
+		ClientRunningMonitor runningMonitor = new ClientRunningMonitor();
+		runningMonitor.setDestination(destination);
+		runningMonitor.setZkClient(zkclientx);
+		runningMonitor.setClientData(clientData);
+		runningMonitor.setListener(new ClientRunningListener() {
 
-            public InetSocketAddress processActiveEnter() {
-                System.out.println(String.format("clientId:%s port:%s has start", clientId, port));
-                countLatch.countDown();
-                return new InetSocketAddress(AddressUtils.getHostIp(), port);
-            }
+			public InetSocketAddress processActiveEnter() {
+				System.out.println(String.format("clientId:%s port:%s has start", clientId, port));
+				countLatch.countDown();
+				return new InetSocketAddress(AddressUtils.getHostIp(), port);
+			}
 
-            public void processActiveExit() {
-                countLatch.countDown();
-                System.out.println(String.format("clientId:%s port:%s has stop", clientId, port));
-            }
+			public void processActiveExit() {
+				countLatch.countDown();
+				System.out.println(String.format("clientId:%s port:%s has stop", clientId, port));
+			}
 
-        });
-        runningMonitor.setDelayTime(1);
-        return runningMonitor;
-    }
-}
+		});
+		runningMonitor.setDelayTime(1);
+		return runningMonitor;
+	}
+}
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 505e987e..ea1e393c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -237,7 +237,7 @@
             <dependency>
                 <groupId>com.google.protobuf</groupId>
                 <artifactId>protobuf-java</artifactId>
-                <version>2.6.1</version>
+                <version>3.6.1</version>
             </dependency>
             <dependency>
                 <groupId>org.apache.ibatis</groupId>
diff --git a/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalEntry.java b/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalEntry.java
index 051d8bf6..997f76c5 100644
--- a/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalEntry.java
+++ b/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalEntry.java
@@ -5,44 +5,59 @@ package com.alibaba.otter.canal.protocol;
 
 public final class CanalEntry {
   private CanalEntry() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
   public static void registerAllExtensions(
       com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
   }
   /**
-   * Protobuf enum {@code com.alibaba.otter.canal.protocol.EntryType}
-   *
    * <pre>
    **打散后的事件类型，主要用于标识事务的开始，变更数据，结束*
    * </pre>
+   *
+   * Protobuf enum {@code com.alibaba.otter.canal.protocol.EntryType}
    */
   public enum EntryType
-      implements com.google.protobuf.ProtocolMessageEnum {
+          implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>ENTRYTYPECOMPATIBLEPROTO2 = 0;</code>
+     */
+    ENTRYTYPECOMPATIBLEPROTO2(0),
     /**
      * <code>TRANSACTIONBEGIN = 1;</code>
      */
-    TRANSACTIONBEGIN(0, 1),
+    TRANSACTIONBEGIN(1),
     /**
      * <code>ROWDATA = 2;</code>
      */
-    ROWDATA(1, 2),
+    ROWDATA(2),
     /**
      * <code>TRANSACTIONEND = 3;</code>
      */
-    TRANSACTIONEND(2, 3),
+    TRANSACTIONEND(3),
     /**
-     * <code>HEARTBEAT = 4;</code>
-     *
      * <pre>
      ** 心跳类型，内部使用，外部暂不可见，可忽略 *
      * </pre>
+     *
+     * <code>HEARTBEAT = 4;</code>
      */
-    HEARTBEAT(3, 4),
+    HEARTBEAT(4),
     /**
      * <code>GTIDLOG = 5;</code>
      */
-    GTIDLOG(4, 5),
+    GTIDLOG(5),
+    UNRECOGNIZED(-1),
     ;
 
+    /**
+     * <code>ENTRYTYPECOMPATIBLEPROTO2 = 0;</code>
+     */
+    public static final int ENTRYTYPECOMPATIBLEPROTO2_VALUE = 0;
     /**
      * <code>TRANSACTIONBEGIN = 1;</code>
      */
@@ -56,11 +71,11 @@ public final class CanalEntry {
      */
     public static final int TRANSACTIONEND_VALUE = 3;
     /**
-     * <code>HEARTBEAT = 4;</code>
-     *
      * <pre>
      ** 心跳类型，内部使用，外部暂不可见，可忽略 *
      * </pre>
+     *
+     * <code>HEARTBEAT = 4;</code>
      */
     public static final int HEARTBEAT_VALUE = 4;
     /**
@@ -69,10 +84,25 @@ public final class CanalEntry {
     public static final int GTIDLOG_VALUE = 5;
 
 
-    public final int getNumber() { return value; }
+    public final int getNumber() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalArgumentException(
+                "Can't get the number of an unknown enum value.");
+      }
+      return value;
+    }
 
+    /**
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
     public static EntryType valueOf(int value) {
+      return forNumber(value);
+    }
+
+    public static EntryType forNumber(int value) {
       switch (value) {
+        case 0: return ENTRYTYPECOMPATIBLEPROTO2;
         case 1: return TRANSACTIONBEGIN;
         case 2: return ROWDATA;
         case 3: return TRANSACTIONEND;
@@ -83,46 +113,47 @@ public final class CanalEntry {
     }
 
     public static com.google.protobuf.Internal.EnumLiteMap<EntryType>
-        internalGetValueMap() {
+    internalGetValueMap() {
       return internalValueMap;
     }
-    private static com.google.protobuf.Internal.EnumLiteMap<EntryType>
-        internalValueMap =
-          new com.google.protobuf.Internal.EnumLiteMap<EntryType>() {
-            public EntryType findValueByNumber(int number) {
-              return EntryType.valueOf(number);
-            }
-          };
+    private static final com.google.protobuf.Internal.EnumLiteMap<
+            EntryType> internalValueMap =
+            new com.google.protobuf.Internal.EnumLiteMap<EntryType>() {
+              public EntryType findValueByNumber(int number) {
+                return EntryType.forNumber(number);
+              }
+            };
 
     public final com.google.protobuf.Descriptors.EnumValueDescriptor
-        getValueDescriptor() {
-      return getDescriptor().getValues().get(index);
+    getValueDescriptor() {
+      return getDescriptor().getValues().get(ordinal());
     }
     public final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptorForType() {
+    getDescriptorForType() {
       return getDescriptor();
     }
     public static final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptor() {
-      return CanalEntry.getDescriptor().getEnumTypes().get(0);
+    getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalEntry.getDescriptor().getEnumTypes().get(0);
     }
 
     private static final EntryType[] VALUES = values();
 
     public static EntryType valueOf(
-        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+            com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
       if (desc.getType() != getDescriptor()) {
-        throw new IllegalArgumentException(
-          "EnumValueDescriptor is not for this type.");
+        throw new java.lang.IllegalArgumentException(
+                "EnumValueDescriptor is not for this type.");
+      }
+      if (desc.getIndex() == -1) {
+        return UNRECOGNIZED;
       }
       return VALUES[desc.getIndex()];
     }
 
-    private final int index;
     private final int value;
 
-    private EntryType(int index, int value) {
-      this.index = index;
+    private EntryType(int value) {
       this.value = value;
     }
 
@@ -130,88 +161,97 @@ public final class CanalEntry {
   }
 
   /**
-   * Protobuf enum {@code com.alibaba.otter.canal.protocol.EventType}
-   *
    * <pre>
    ** 事件类型 *
    * </pre>
+   *
+   * Protobuf enum {@code com.alibaba.otter.canal.protocol.EventType}
    */
   public enum EventType
       implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>EVENTTYPECOMPATIBLEPROTO2 = 0;</code>
+     */
+    EVENTTYPECOMPATIBLEPROTO2(0),
     /**
      * <code>INSERT = 1;</code>
      */
-    INSERT(0, 1),
+    INSERT(1),
     /**
      * <code>UPDATE = 2;</code>
      */
-    UPDATE(1, 2),
+    UPDATE(2),
     /**
      * <code>DELETE = 3;</code>
      */
-    DELETE(2, 3),
+    DELETE(3),
     /**
      * <code>CREATE = 4;</code>
      */
-    CREATE(3, 4),
+    CREATE(4),
     /**
      * <code>ALTER = 5;</code>
      */
-    ALTER(4, 5),
+    ALTER(5),
     /**
      * <code>ERASE = 6;</code>
      */
-    ERASE(5, 6),
+    ERASE(6),
     /**
      * <code>QUERY = 7;</code>
      */
-    QUERY(6, 7),
+    QUERY(7),
     /**
      * <code>TRUNCATE = 8;</code>
      */
-    TRUNCATE(7, 8),
+    TRUNCATE(8),
     /**
      * <code>RENAME = 9;</code>
      */
-    RENAME(8, 9),
+    RENAME(9),
     /**
-     * <code>CINDEX = 10;</code>
-     *
      * <pre>
      **CREATE INDEX*
      * </pre>
+     *
+     * <code>CINDEX = 10;</code>
      */
-    CINDEX(9, 10),
+    CINDEX(10),
     /**
      * <code>DINDEX = 11;</code>
      */
-    DINDEX(10, 11),
+    DINDEX(11),
     /**
      * <code>GTID = 12;</code>
      */
-    GTID(11, 12),
+    GTID(12),
     /**
-     * <code>XACOMMIT = 13;</code>
-     *
      * <pre>
      ** XA *
      * </pre>
+     *
+     * <code>XACOMMIT = 13;</code>
      */
-    XACOMMIT(12, 13),
+    XACOMMIT(13),
     /**
      * <code>XAROLLBACK = 14;</code>
      */
-    XAROLLBACK(13, 14),
+    XAROLLBACK(14),
     /**
-     * <code>MHEARTBEAT = 15;</code>
-     *
      * <pre>
      ** MASTER HEARTBEAT *
      * </pre>
+     *
+     * <code>MHEARTBEAT = 15;</code>
      */
-    MHEARTBEAT(14, 15),
+    MHEARTBEAT(15),
+    UNRECOGNIZED(-1),
     ;
 
+    /**
+     * <code>EVENTTYPECOMPATIBLEPROTO2 = 0;</code>
+     */
+    public static final int EVENTTYPECOMPATIBLEPROTO2_VALUE = 0;
     /**
      * <code>INSERT = 1;</code>
      */
@@ -249,11 +289,11 @@ public final class CanalEntry {
      */
     public static final int RENAME_VALUE = 9;
     /**
-     * <code>CINDEX = 10;</code>
-     *
      * <pre>
      **CREATE INDEX*
      * </pre>
+     *
+     * <code>CINDEX = 10;</code>
      */
     public static final int CINDEX_VALUE = 10;
     /**
@@ -265,11 +305,11 @@ public final class CanalEntry {
      */
     public static final int GTID_VALUE = 12;
     /**
-     * <code>XACOMMIT = 13;</code>
-     *
      * <pre>
      ** XA *
      * </pre>
+     *
+     * <code>XACOMMIT = 13;</code>
      */
     public static final int XACOMMIT_VALUE = 13;
     /**
@@ -277,19 +317,34 @@ public final class CanalEntry {
      */
     public static final int XAROLLBACK_VALUE = 14;
     /**
-     * <code>MHEARTBEAT = 15;</code>
-     *
      * <pre>
      ** MASTER HEARTBEAT *
      * </pre>
+     *
+     * <code>MHEARTBEAT = 15;</code>
      */
     public static final int MHEARTBEAT_VALUE = 15;
 
 
-    public final int getNumber() { return value; }
+    public final int getNumber() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalArgumentException(
+            "Can't get the number of an unknown enum value.");
+      }
+      return value;
+    }
 
+    /**
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
     public static EventType valueOf(int value) {
+      return forNumber(value);
+    }
+
+    public static EventType forNumber(int value) {
       switch (value) {
+        case 0: return EVENTTYPECOMPATIBLEPROTO2;
         case 1: return INSERT;
         case 2: return UPDATE;
         case 3: return DELETE;
@@ -313,17 +368,17 @@ public final class CanalEntry {
         internalGetValueMap() {
       return internalValueMap;
     }
-    private static com.google.protobuf.Internal.EnumLiteMap<EventType>
-        internalValueMap =
+    private static final com.google.protobuf.Internal.EnumLiteMap<
+        EventType> internalValueMap =
           new com.google.protobuf.Internal.EnumLiteMap<EventType>() {
             public EventType findValueByNumber(int number) {
-              return EventType.valueOf(number);
+              return EventType.forNumber(number);
             }
           };
 
     public final com.google.protobuf.Descriptors.EnumValueDescriptor
         getValueDescriptor() {
-      return getDescriptor().getValues().get(index);
+      return getDescriptor().getValues().get(ordinal());
     }
     public final com.google.protobuf.Descriptors.EnumDescriptor
         getDescriptorForType() {
@@ -331,7 +386,7 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.EnumDescriptor
         getDescriptor() {
-      return CanalEntry.getDescriptor().getEnumTypes().get(1);
+      return com.alibaba.otter.canal.protocol.CanalEntry.getDescriptor().getEnumTypes().get(1);
     }
 
     private static final EventType[] VALUES = values();
@@ -339,17 +394,18 @@ public final class CanalEntry {
     public static EventType valueOf(
         com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
       if (desc.getType() != getDescriptor()) {
-        throw new IllegalArgumentException(
+        throw new java.lang.IllegalArgumentException(
           "EnumValueDescriptor is not for this type.");
       }
+      if (desc.getIndex() == -1) {
+        return UNRECOGNIZED;
+      }
       return VALUES[desc.getIndex()];
     }
 
-    private final int index;
     private final int value;
 
-    private EventType(int index, int value) {
-      this.index = index;
+    private EventType(int value) {
       this.value = value;
     }
 
@@ -357,28 +413,37 @@ public final class CanalEntry {
   }
 
   /**
-   * Protobuf enum {@code com.alibaba.otter.canal.protocol.Type}
-   *
    * <pre>
    **数据库类型*
    * </pre>
+   *
+   * Protobuf enum {@code com.alibaba.otter.canal.protocol.Type}
    */
   public enum Type
       implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>TYPECOMPATIBLEPROTO2 = 0;</code>
+     */
+    TYPECOMPATIBLEPROTO2(0),
     /**
      * <code>ORACLE = 1;</code>
      */
-    ORACLE(0, 1),
+    ORACLE(1),
     /**
      * <code>MYSQL = 2;</code>
      */
-    MYSQL(1, 2),
+    MYSQL(2),
     /**
      * <code>PGSQL = 3;</code>
      */
-    PGSQL(2, 3),
+    PGSQL(3),
+    UNRECOGNIZED(-1),
     ;
 
+    /**
+     * <code>TYPECOMPATIBLEPROTO2 = 0;</code>
+     */
+    public static final int TYPECOMPATIBLEPROTO2_VALUE = 0;
     /**
      * <code>ORACLE = 1;</code>
      */
@@ -393,10 +458,25 @@ public final class CanalEntry {
     public static final int PGSQL_VALUE = 3;
 
 
-    public final int getNumber() { return value; }
+    public final int getNumber() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalArgumentException(
+            "Can't get the number of an unknown enum value.");
+      }
+      return value;
+    }
 
+    /**
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
     public static Type valueOf(int value) {
+      return forNumber(value);
+    }
+
+    public static Type forNumber(int value) {
       switch (value) {
+        case 0: return TYPECOMPATIBLEPROTO2;
         case 1: return ORACLE;
         case 2: return MYSQL;
         case 3: return PGSQL;
@@ -408,17 +488,17 @@ public final class CanalEntry {
         internalGetValueMap() {
       return internalValueMap;
     }
-    private static com.google.protobuf.Internal.EnumLiteMap<Type>
-        internalValueMap =
+    private static final com.google.protobuf.Internal.EnumLiteMap<
+        Type> internalValueMap =
           new com.google.protobuf.Internal.EnumLiteMap<Type>() {
             public Type findValueByNumber(int number) {
-              return Type.valueOf(number);
+              return Type.forNumber(number);
             }
           };
 
     public final com.google.protobuf.Descriptors.EnumValueDescriptor
         getValueDescriptor() {
-      return getDescriptor().getValues().get(index);
+      return getDescriptor().getValues().get(ordinal());
     }
     public final com.google.protobuf.Descriptors.EnumDescriptor
         getDescriptorForType() {
@@ -426,7 +506,7 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.EnumDescriptor
         getDescriptor() {
-      return CanalEntry.getDescriptor().getEnumTypes().get(2);
+      return com.alibaba.otter.canal.protocol.CanalEntry.getDescriptor().getEnumTypes().get(2);
     }
 
     private static final Type[] VALUES = values();
@@ -434,17 +514,18 @@ public final class CanalEntry {
     public static Type valueOf(
         com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
       if (desc.getType() != getDescriptor()) {
-        throw new IllegalArgumentException(
+        throw new java.lang.IllegalArgumentException(
           "EnumValueDescriptor is not for this type.");
       }
+      if (desc.getIndex() == -1) {
+        return UNRECOGNIZED;
+      }
       return VALUES[desc.getIndex()];
     }
 
-    private final int index;
     private final int value;
 
-    private Type(int index, int value) {
-      this.index = index;
+    private Type(int value) {
       this.value = value;
     }
 
@@ -456,105 +537,86 @@ public final class CanalEntry {
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-     *
      * <pre>
      **协议头部信息*
      * </pre>
+     *
+     * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
      */
     boolean hasHeader();
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-     *
      * <pre>
      **协议头部信息*
      * </pre>
-     */
-    Header getHeader();
-    /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
      *
+     * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
+     */
+    com.alibaba.otter.canal.protocol.CanalEntry.Header getHeader();
+    /**
      * <pre>
      **协议头部信息*
      * </pre>
+     *
+     * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
      */
-    HeaderOrBuilder getHeaderOrBuilder();
+    com.alibaba.otter.canal.protocol.CanalEntry.HeaderOrBuilder getHeaderOrBuilder();
 
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EntryType entryType = 2 [default = ROWDATA];</code>
-     *
-     * <pre>
-     **打散后的事件类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
      */
-    boolean hasEntryType();
+    int getEntryTypeValue();
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EntryType entryType = 2 [default = ROWDATA];</code>
-     *
-     * <pre>
-     **打散后的事件类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
      */
-    EntryType getEntryType();
+    com.alibaba.otter.canal.protocol.CanalEntry.EntryType getEntryType();
 
     /**
-     * <code>optional bytes storeValue = 3;</code>
-     *
      * <pre>
      **传输的二进制数组*
      * </pre>
-     */
-    boolean hasStoreValue();
-    /**
-     * <code>optional bytes storeValue = 3;</code>
      *
-     * <pre>
-     **传输的二进制数组*
-     * </pre>
+     * <code>bytes storeValue = 3;</code>
      */
     com.google.protobuf.ByteString getStoreValue();
+
+    public com.alibaba.otter.canal.protocol.CanalEntry.Entry.EntryTypePresentCase getEntryTypePresentCase();
   }
   /**
-   * Protobuf type {@code com.alibaba.otter.canal.protocol.Entry}
-   *
    * <pre>
    ****************************************************************
    * message model
    *如果要在Enum中新增类型，确保以前的类型的下标值不变.
    ***************************************************************
    * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Entry}
    */
-  public static final class Entry extends
-      com.google.protobuf.GeneratedMessage implements
+  public  static final class Entry extends
+      com.google.protobuf.GeneratedMessageV3 implements
       // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Entry)
       EntryOrBuilder {
+  private static final long serialVersionUID = 0L;
     // Use Entry.newBuilder() to construct.
-    private Entry(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    private Entry(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
-      this.unknownFields = builder.getUnknownFields();
     }
-    private Entry(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final Entry defaultInstance;
-    public static Entry getDefaultInstance() {
-      return defaultInstance;
+    private Entry() {
+      storeValue_ = com.google.protobuf.ByteString.EMPTY;
     }
 
-    public Entry getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @Override
+    @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
+    getUnknownFields() {
       return this.unknownFields;
     }
     private Entry(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
       int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
@@ -566,49 +628,44 @@ public final class CanalEntry {
             case 0:
               done = true;
               break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
             case 10: {
-              Header.Builder subBuilder = null;
-              if (((bitField0_ & 0x00000001) == 0x00000001)) {
+              com.alibaba.otter.canal.protocol.CanalEntry.Header.Builder subBuilder = null;
+              if (header_ != null) {
                 subBuilder = header_.toBuilder();
               }
-              header_ = input.readMessage(Header.PARSER, extensionRegistry);
+              header_ = input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Header.parser(), extensionRegistry);
               if (subBuilder != null) {
                 subBuilder.mergeFrom(header_);
                 header_ = subBuilder.buildPartial();
               }
-              bitField0_ |= 0x00000001;
+
               break;
             }
             case 16: {
               int rawValue = input.readEnum();
-              EntryType value = EntryType.valueOf(rawValue);
-              if (value == null) {
-                unknownFields.mergeVarintField(2, rawValue);
-              } else {
-                bitField0_ |= 0x00000002;
-                entryType_ = value;
-              }
+              entryTypePresentCase_ = 2;
+              entryTypePresent_ = rawValue;
               break;
             }
             case 26: {
-              bitField0_ |= 0x00000004;
+
               storeValue_ = input.readBytes();
               break;
             }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
           }
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
+            e).setUnfinishedMessage(this);
       } finally {
         this.unknownFields = unknownFields.build();
         makeExtensionsImmutable();
@@ -616,117 +673,124 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor;
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor;
     }
 
-    protected FieldAccessorTable
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_fieldAccessorTable
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              Entry.class, Builder.class);
+              com.alibaba.otter.canal.protocol.CanalEntry.Entry.class, com.alibaba.otter.canal.protocol.CanalEntry.Entry.Builder.class);
     }
 
-    public static com.google.protobuf.Parser<Entry> PARSER =
-        new com.google.protobuf.AbstractParser<Entry>() {
-      public Entry parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new Entry(input, extensionRegistry);
+    private int entryTypePresentCase_ = 0;
+    private java.lang.Object entryTypePresent_;
+    public enum EntryTypePresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      ENTRYTYPE(2),
+      ENTRYTYPEPRESENT_NOT_SET(0);
+      private final int value;
+      private EntryTypePresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static EntryTypePresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static EntryTypePresentCase forNumber(int value) {
+        switch (value) {
+          case 2: return ENTRYTYPE;
+          case 0: return ENTRYTYPEPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
       }
     };
 
-    @Override
-    public com.google.protobuf.Parser<Entry> getParserForType() {
-      return PARSER;
+    public EntryTypePresentCase
+    getEntryTypePresentCase() {
+      return EntryTypePresentCase.forNumber(
+          entryTypePresentCase_);
     }
 
-    private int bitField0_;
     public static final int HEADER_FIELD_NUMBER = 1;
-    private Header header_;
+    private com.alibaba.otter.canal.protocol.CanalEntry.Header header_;
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-     *
      * <pre>
      **协议头部信息*
      * </pre>
+     *
+     * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
      */
     public boolean hasHeader() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
+      return header_ != null;
     }
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-     *
      * <pre>
      **协议头部信息*
      * </pre>
+     *
+     * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
      */
-    public Header getHeader() {
-      return header_;
+    public com.alibaba.otter.canal.protocol.CanalEntry.Header getHeader() {
+      return header_ == null ? com.alibaba.otter.canal.protocol.CanalEntry.Header.getDefaultInstance() : header_;
     }
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-     *
      * <pre>
      **协议头部信息*
      * </pre>
+     *
+     * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
      */
-    public HeaderOrBuilder getHeaderOrBuilder() {
-      return header_;
+    public com.alibaba.otter.canal.protocol.CanalEntry.HeaderOrBuilder getHeaderOrBuilder() {
+      return getHeader();
     }
 
     public static final int ENTRYTYPE_FIELD_NUMBER = 2;
-    private EntryType entryType_;
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EntryType entryType = 2 [default = ROWDATA];</code>
-     *
-     * <pre>
-     **打散后的事件类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
      */
-    public boolean hasEntryType() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
+    public int getEntryTypeValue() {
+      if (entryTypePresentCase_ == 2) {
+        return (java.lang.Integer) entryTypePresent_;
+      }
+      return EntryType.ROWDATA_VALUE;
     }
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EntryType entryType = 2 [default = ROWDATA];</code>
-     *
-     * <pre>
-     **打散后的事件类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
      */
-    public EntryType getEntryType() {
-      return entryType_;
+    public com.alibaba.otter.canal.protocol.CanalEntry.EntryType getEntryType() {
+      if (entryTypePresentCase_ == 2) {
+        @SuppressWarnings("deprecation")
+        com.alibaba.otter.canal.protocol.CanalEntry.EntryType result = com.alibaba.otter.canal.protocol.CanalEntry.EntryType.valueOf(
+            (java.lang.Integer) entryTypePresent_);
+        return result == null ? com.alibaba.otter.canal.protocol.CanalEntry.EntryType.UNRECOGNIZED : result;
+      }
+      return com.alibaba.otter.canal.protocol.CanalEntry.EntryType.TRANSACTIONBEGIN;
     }
 
     public static final int STOREVALUE_FIELD_NUMBER = 3;
     private com.google.protobuf.ByteString storeValue_;
     /**
-     * <code>optional bytes storeValue = 3;</code>
-     *
      * <pre>
      **传输的二进制数组*
      * </pre>
-     */
-    public boolean hasStoreValue() {
-      return ((bitField0_ & 0x00000004) == 0x00000004);
-    }
-    /**
-     * <code>optional bytes storeValue = 3;</code>
      *
-     * <pre>
-     **传输的二进制数组*
-     * </pre>
+     * <code>bytes storeValue = 3;</code>
      */
     public com.google.protobuf.ByteString getStoreValue() {
       return storeValue_;
     }
 
-    private void initFields() {
-      header_ = Header.getDefaultInstance();
-      entryType_ = EntryType.ROWDATA;
-      storeValue_ = com.google.protobuf.ByteString.EMPTY;
-    }
     private byte memoizedIsInitialized = -1;
+    @java.lang.Override
     public final boolean isInitialized() {
       byte isInitialized = memoizedIsInitialized;
       if (isInitialized == 1) return true;
@@ -736,141 +800,218 @@ public final class CanalEntry {
       return true;
     }
 
+    @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        output.writeMessage(1, header_);
+      if (header_ != null) {
+        output.writeMessage(1, getHeader());
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeEnum(2, entryType_.getNumber());
+      if (entryTypePresentCase_ == 2) {
+        output.writeEnum(2, ((java.lang.Integer) entryTypePresent_));
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+      if (!storeValue_.isEmpty()) {
         output.writeBytes(3, storeValue_);
       }
-      getUnknownFields().writeTo(output);
+      unknownFields.writeTo(output);
     }
 
-    private int memoizedSerializedSize = -1;
+    @java.lang.Override
     public int getSerializedSize() {
-      int size = memoizedSerializedSize;
+      int size = memoizedSize;
       if (size != -1) return size;
 
       size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (header_ != null) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, header_);
+          .computeMessageSize(1, getHeader());
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+      if (entryTypePresentCase_ == 2) {
         size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(2, entryType_.getNumber());
+          .computeEnumSize(2, ((java.lang.Integer) entryTypePresent_));
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+      if (!storeValue_.isEmpty()) {
         size += com.google.protobuf.CodedOutputStream
           .computeBytesSize(3, storeValue_);
       }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
       return size;
     }
 
-    private static final long serialVersionUID = 0L;
-    @Override
-    protected Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalEntry.Entry)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalEntry.Entry other = (com.alibaba.otter.canal.protocol.CanalEntry.Entry) obj;
+
+      boolean result = true;
+      result = result && (hasHeader() == other.hasHeader());
+      if (hasHeader()) {
+        result = result && getHeader()
+            .equals(other.getHeader());
+      }
+      result = result && getStoreValue()
+          .equals(other.getStoreValue());
+      result = result && getEntryTypePresentCase().equals(
+          other.getEntryTypePresentCase());
+      if (!result) return false;
+      switch (entryTypePresentCase_) {
+        case 2:
+          result = result && getEntryTypeValue()
+              == other.getEntryTypeValue();
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
     }
 
-    public static Entry parseFrom(
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      if (hasHeader()) {
+        hash = (37 * hash) + HEADER_FIELD_NUMBER;
+        hash = (53 * hash) + getHeader().hashCode();
+      }
+      hash = (37 * hash) + STOREVALUE_FIELD_NUMBER;
+      hash = (53 * hash) + getStoreValue().hashCode();
+      switch (entryTypePresentCase_) {
+        case 2:
+          hash = (37 * hash) + ENTRYTYPE_FIELD_NUMBER;
+          hash = (53 * hash) + getEntryTypeValue();
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static Entry parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static Entry parseFrom(byte[] data)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static Entry parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static Entry parseFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static Entry parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static Entry parseDelimitedFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
     }
-    public static Entry parseDelimitedFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static Entry parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static Entry parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
-    public static Builder newBuilder() { return Builder.create(); }
+    @java.lang.Override
     public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(Entry prototype) {
-      return newBuilder().mergeFrom(prototype);
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalEntry.Entry prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
     }
-    public Builder toBuilder() { return newBuilder(this); }
 
-    @Override
+    @java.lang.Override
     protected Builder newBuilderForType(
-        BuilderParent parent) {
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Entry}
-     *
      * <pre>
      ****************************************************************
      * message model
      *如果要在Enum中新增类型，确保以前的类型的下标值不变.
      ***************************************************************
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Entry}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Entry)
-        EntryOrBuilder {
+        com.alibaba.otter.canal.protocol.CanalEntry.EntryOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor;
       }
 
-      protected FieldAccessorTable
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_fieldAccessorTable
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                Entry.class, Builder.class);
+                com.alibaba.otter.canal.protocol.CanalEntry.Entry.class, com.alibaba.otter.canal.protocol.CanalEntry.Entry.Builder.class);
       }
 
       // Construct using com.alibaba.otter.canal.protocol.CanalEntry.Entry.newBuilder()
@@ -879,118 +1020,148 @@ public final class CanalEntry {
       }
 
       private Builder(
-          BuilderParent parent) {
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
         super(parent);
         maybeForceBuilderInitialization();
       }
       private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-          getHeaderFieldBuilder();
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
       }
-      private static Builder create() {
-        return new Builder();
-      }
-
+      @java.lang.Override
       public Builder clear() {
         super.clear();
         if (headerBuilder_ == null) {
-          header_ = Header.getDefaultInstance();
+          header_ = null;
         } else {
-          headerBuilder_.clear();
+          header_ = null;
+          headerBuilder_ = null;
         }
-        bitField0_ = (bitField0_ & ~0x00000001);
-        entryType_ = EntryType.ROWDATA;
-        bitField0_ = (bitField0_ & ~0x00000002);
         storeValue_ = com.google.protobuf.ByteString.EMPTY;
-        bitField0_ = (bitField0_ & ~0x00000004);
+
+        entryTypePresentCase_ = 0;
+        entryTypePresent_ = null;
         return this;
       }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
+      @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor;
       }
 
-      public Entry getDefaultInstanceForType() {
-        return Entry.getDefaultInstance();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Entry getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalEntry.Entry.getDefaultInstance();
       }
 
-      public Entry build() {
-        Entry result = buildPartial();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Entry build() {
+        com.alibaba.otter.canal.protocol.CanalEntry.Entry result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
         return result;
       }
 
-      public Entry buildPartial() {
-        Entry result = new Entry(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
-        }
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Entry buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalEntry.Entry result = new com.alibaba.otter.canal.protocol.CanalEntry.Entry(this);
         if (headerBuilder_ == null) {
           result.header_ = header_;
         } else {
           result.header_ = headerBuilder_.build();
         }
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
-        }
-        result.entryType_ = entryType_;
-        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-          to_bitField0_ |= 0x00000004;
+        if (entryTypePresentCase_ == 2) {
+          result.entryTypePresent_ = entryTypePresent_;
         }
         result.storeValue_ = storeValue_;
-        result.bitField0_ = to_bitField0_;
+        result.entryTypePresentCase_ = entryTypePresentCase_;
         onBuilt();
         return result;
       }
 
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof Entry) {
-          return mergeFrom((Entry)other);
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalEntry.Entry) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalEntry.Entry)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(Entry other) {
-        if (other == Entry.getDefaultInstance()) return this;
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalEntry.Entry other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalEntry.Entry.getDefaultInstance()) return this;
         if (other.hasHeader()) {
           mergeHeader(other.getHeader());
         }
-        if (other.hasEntryType()) {
-          setEntryType(other.getEntryType());
-        }
-        if (other.hasStoreValue()) {
+        if (other.getStoreValue() != com.google.protobuf.ByteString.EMPTY) {
           setStoreValue(other.getStoreValue());
         }
-        this.mergeUnknownFields(other.getUnknownFields());
+        switch (other.getEntryTypePresentCase()) {
+          case ENTRYTYPE: {
+            setEntryTypeValue(other.getEntryTypeValue());
+            break;
+          }
+          case ENTRYTYPEPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
         return this;
       }
 
+      @java.lang.Override
       public final boolean isInitialized() {
         return true;
       }
 
+      @java.lang.Override
       public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        Entry parsedMessage = null;
+        com.alibaba.otter.canal.protocol.CanalEntry.Entry parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (Entry) e.getUnfinishedMessage();
-          throw e;
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalEntry.Entry) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
             mergeFrom(parsedMessage);
@@ -998,43 +1169,57 @@ public final class CanalEntry {
         }
         return this;
       }
-      private int bitField0_;
+      private int entryTypePresentCase_ = 0;
+      private java.lang.Object entryTypePresent_;
+      public EntryTypePresentCase
+          getEntryTypePresentCase() {
+        return EntryTypePresentCase.forNumber(
+            entryTypePresentCase_);
+      }
 
-      private Header header_ = Header.getDefaultInstance();
-      private com.google.protobuf.SingleFieldBuilder<
-          Header, Header.Builder, HeaderOrBuilder> headerBuilder_;
+      public Builder clearEntryTypePresent() {
+        entryTypePresentCase_ = 0;
+        entryTypePresent_ = null;
+        onChanged();
+        return this;
+      }
+
+
+      private com.alibaba.otter.canal.protocol.CanalEntry.Header header_ = null;
+      private com.google.protobuf.SingleFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Header, com.alibaba.otter.canal.protocol.CanalEntry.Header.Builder, com.alibaba.otter.canal.protocol.CanalEntry.HeaderOrBuilder> headerBuilder_;
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
       public boolean hasHeader() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
+        return headerBuilder_ != null || header_ != null;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
-      public Header getHeader() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Header getHeader() {
         if (headerBuilder_ == null) {
-          return header_;
+          return header_ == null ? com.alibaba.otter.canal.protocol.CanalEntry.Header.getDefaultInstance() : header_;
         } else {
           return headerBuilder_.getMessage();
         }
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
-      public Builder setHeader(Header value) {
+      public Builder setHeader(com.alibaba.otter.canal.protocol.CanalEntry.Header value) {
         if (headerBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -1044,40 +1229,39 @@ public final class CanalEntry {
         } else {
           headerBuilder_.setMessage(value);
         }
-        bitField0_ |= 0x00000001;
+
         return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
       public Builder setHeader(
-          Header.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Header.Builder builderForValue) {
         if (headerBuilder_ == null) {
           header_ = builderForValue.build();
           onChanged();
         } else {
           headerBuilder_.setMessage(builderForValue.build());
         }
-        bitField0_ |= 0x00000001;
+
         return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
-      public Builder mergeHeader(Header value) {
+      public Builder mergeHeader(com.alibaba.otter.canal.protocol.CanalEntry.Header value) {
         if (headerBuilder_ == null) {
-          if (((bitField0_ & 0x00000001) == 0x00000001) &&
-              header_ != Header.getDefaultInstance()) {
+          if (header_ != null) {
             header_ =
-              Header.newBuilder(header_).mergeFrom(value).buildPartial();
+              com.alibaba.otter.canal.protocol.CanalEntry.Header.newBuilder(header_).mergeFrom(value).buildPartial();
           } else {
             header_ = value;
           }
@@ -1085,65 +1269,67 @@ public final class CanalEntry {
         } else {
           headerBuilder_.mergeFrom(value);
         }
-        bitField0_ |= 0x00000001;
+
         return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
       public Builder clearHeader() {
         if (headerBuilder_ == null) {
-          header_ = Header.getDefaultInstance();
+          header_ = null;
           onChanged();
         } else {
-          headerBuilder_.clear();
+          header_ = null;
+          headerBuilder_ = null;
         }
-        bitField0_ = (bitField0_ & ~0x00000001);
+
         return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
-      public Header.Builder getHeaderBuilder() {
-        bitField0_ |= 0x00000001;
+      public com.alibaba.otter.canal.protocol.CanalEntry.Header.Builder getHeaderBuilder() {
+        
         onChanged();
         return getHeaderFieldBuilder().getBuilder();
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
-      public HeaderOrBuilder getHeaderOrBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.HeaderOrBuilder getHeaderOrBuilder() {
         if (headerBuilder_ != null) {
           return headerBuilder_.getMessageOrBuilder();
         } else {
-          return header_;
+          return header_ == null ?
+              com.alibaba.otter.canal.protocol.CanalEntry.Header.getDefaultInstance() : header_;
         }
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Header header = 1;</code>
-       *
        * <pre>
        **协议头部信息*
        * </pre>
+       *
+       * <code>.com.alibaba.otter.canal.protocol.Header header = 1;</code>
        */
-      private com.google.protobuf.SingleFieldBuilder<
-          Header, Header.Builder, HeaderOrBuilder>
+      private com.google.protobuf.SingleFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Header, com.alibaba.otter.canal.protocol.CanalEntry.Header.Builder, com.alibaba.otter.canal.protocol.CanalEntry.HeaderOrBuilder> 
           getHeaderFieldBuilder() {
         if (headerBuilder_ == null) {
-          headerBuilder_ = new com.google.protobuf.SingleFieldBuilder<
-              Header, Header.Builder, HeaderOrBuilder>(
+          headerBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Header, com.alibaba.otter.canal.protocol.CanalEntry.Header.Builder, com.alibaba.otter.canal.protocol.CanalEntry.HeaderOrBuilder>(
                   getHeader(),
                   getParentForChildren(),
                   isClean());
@@ -1152,117 +1338,151 @@ public final class CanalEntry {
         return headerBuilder_;
       }
 
-      private EntryType entryType_ = EntryType.ROWDATA;
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EntryType entryType = 2 [default = ROWDATA];</code>
-       *
-       * <pre>
-       **打散后的事件类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
        */
-      public boolean hasEntryType() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EntryType entryType = 2 [default = ROWDATA];</code>
-       *
-       * <pre>
-       **打散后的事件类型*
-       * </pre>
-       */
-      public EntryType getEntryType() {
-        return entryType_;
-      }
-      /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EntryType entryType = 2 [default = ROWDATA];</code>
-       *
-       * <pre>
-       **打散后的事件类型*
-       * </pre>
-       */
-      public Builder setEntryType(EntryType value) {
-        if (value == null) {
-          throw new NullPointerException();
+      public int getEntryTypeValue() {
+        if (entryTypePresentCase_ == 2) {
+          return ((java.lang.Integer) entryTypePresent_).intValue();
         }
-        bitField0_ |= 0x00000002;
-        entryType_ = value;
+        return 0;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
+       */
+      public Builder setEntryTypeValue(int value) {
+        entryTypePresentCase_ = 2;
+        entryTypePresent_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EntryType entryType = 2 [default = ROWDATA];</code>
-       *
-       * <pre>
-       **打散后的事件类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
+       */
+      public com.alibaba.otter.canal.protocol.CanalEntry.EntryType getEntryType() {
+        if (entryTypePresentCase_ == 2) {
+          @SuppressWarnings("deprecation")
+          com.alibaba.otter.canal.protocol.CanalEntry.EntryType result = com.alibaba.otter.canal.protocol.CanalEntry.EntryType.valueOf(
+              (java.lang.Integer) entryTypePresent_);
+          return result == null ? com.alibaba.otter.canal.protocol.CanalEntry.EntryType.UNRECOGNIZED : result;
+        }
+        return com.alibaba.otter.canal.protocol.CanalEntry.EntryType.TRANSACTIONBEGIN;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
+       */
+      public Builder setEntryType(com.alibaba.otter.canal.protocol.CanalEntry.EntryType value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        entryTypePresentCase_ = 2;
+        entryTypePresent_ = value.getNumber();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.EntryType entryType = 2;</code>
        */
       public Builder clearEntryType() {
-        bitField0_ = (bitField0_ & ~0x00000002);
-        entryType_ = EntryType.ROWDATA;
-        onChanged();
+        if (entryTypePresentCase_ == 2) {
+          entryTypePresentCase_ = 0;
+          entryTypePresent_ = null;
+          onChanged();
+        }
         return this;
       }
 
       private com.google.protobuf.ByteString storeValue_ = com.google.protobuf.ByteString.EMPTY;
       /**
-       * <code>optional bytes storeValue = 3;</code>
-       *
        * <pre>
        **传输的二进制数组*
        * </pre>
-       */
-      public boolean hasStoreValue() {
-        return ((bitField0_ & 0x00000004) == 0x00000004);
-      }
-      /**
-       * <code>optional bytes storeValue = 3;</code>
        *
-       * <pre>
-       **传输的二进制数组*
-       * </pre>
+       * <code>bytes storeValue = 3;</code>
        */
       public com.google.protobuf.ByteString getStoreValue() {
         return storeValue_;
       }
       /**
-       * <code>optional bytes storeValue = 3;</code>
-       *
        * <pre>
        **传输的二进制数组*
        * </pre>
+       *
+       * <code>bytes storeValue = 3;</code>
        */
       public Builder setStoreValue(com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000004;
+  
         storeValue_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional bytes storeValue = 3;</code>
-       *
        * <pre>
        **传输的二进制数组*
        * </pre>
+       *
+       * <code>bytes storeValue = 3;</code>
        */
       public Builder clearStoreValue() {
-        bitField0_ = (bitField0_ & ~0x00000004);
+        
         storeValue_ = getDefaultInstance().getStoreValue();
         onChanged();
         return this;
       }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
 
       // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Entry)
     }
 
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Entry)
+    private static final com.alibaba.otter.canal.protocol.CanalEntry.Entry DEFAULT_INSTANCE;
     static {
-      defaultInstance = new Entry(true);
-      defaultInstance.initFields();
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalEntry.Entry();
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Entry getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Entry>
+        PARSER = new com.google.protobuf.AbstractParser<Entry>() {
+      @java.lang.Override
+      public Entry parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Entry(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Entry> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Entry> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalEntry.Entry getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Entry)
   }
 
   public interface HeaderOrBuilder extends
@@ -1270,335 +1490,246 @@ public final class CanalEntry {
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>optional int32 version = 1 [default = 1];</code>
-     *
-     * <pre>
-     **协议的版本号*
-     * </pre>
-     */
-    boolean hasVersion();
-    /**
-     * <code>optional int32 version = 1 [default = 1];</code>
-     *
-     * <pre>
-     **协议的版本号*
-     * </pre>
+     * <code>int32 version = 1;</code>
      */
     int getVersion();
 
     /**
-     * <code>optional string logfileName = 2;</code>
-     *
      * <pre>
      **binlog/redolog 文件名*
      * </pre>
+     *
+     * <code>string logfileName = 2;</code>
      */
-    boolean hasLogfileName();
+    java.lang.String getLogfileName();
     /**
-     * <code>optional string logfileName = 2;</code>
-     *
      * <pre>
      **binlog/redolog 文件名*
      * </pre>
-     */
-    String getLogfileName();
-    /**
-     * <code>optional string logfileName = 2;</code>
      *
-     * <pre>
-     **binlog/redolog 文件名*
-     * </pre>
+     * <code>string logfileName = 2;</code>
      */
     com.google.protobuf.ByteString
         getLogfileNameBytes();
 
     /**
-     * <code>optional int64 logfileOffset = 3;</code>
-     *
      * <pre>
      **binlog/redolog 文件的偏移位置*
      * </pre>
-     */
-    boolean hasLogfileOffset();
-    /**
-     * <code>optional int64 logfileOffset = 3;</code>
      *
-     * <pre>
-     **binlog/redolog 文件的偏移位置*
-     * </pre>
+     * <code>int64 logfileOffset = 3;</code>
      */
     long getLogfileOffset();
 
     /**
-     * <code>optional int64 serverId = 4;</code>
-     *
      * <pre>
      **服务端serverId*
      * </pre>
-     */
-    boolean hasServerId();
-    /**
-     * <code>optional int64 serverId = 4;</code>
      *
-     * <pre>
-     **服务端serverId*
-     * </pre>
+     * <code>int64 serverId = 4;</code>
      */
     long getServerId();
 
     /**
-     * <code>optional string serverenCode = 5;</code>
-     *
      * <pre>
      ** 变更数据的编码 *
      * </pre>
+     *
+     * <code>string serverenCode = 5;</code>
      */
-    boolean hasServerenCode();
+    java.lang.String getServerenCode();
     /**
-     * <code>optional string serverenCode = 5;</code>
-     *
      * <pre>
      ** 变更数据的编码 *
      * </pre>
-     */
-    String getServerenCode();
-    /**
-     * <code>optional string serverenCode = 5;</code>
      *
-     * <pre>
-     ** 变更数据的编码 *
-     * </pre>
+     * <code>string serverenCode = 5;</code>
      */
     com.google.protobuf.ByteString
         getServerenCodeBytes();
 
     /**
-     * <code>optional int64 executeTime = 6;</code>
-     *
      * <pre>
      **变更数据的执行时间 *
      * </pre>
-     */
-    boolean hasExecuteTime();
-    /**
-     * <code>optional int64 executeTime = 6;</code>
      *
-     * <pre>
-     **变更数据的执行时间 *
-     * </pre>
+     * <code>int64 executeTime = 6;</code>
      */
     long getExecuteTime();
 
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Type sourceType = 7 [default = MYSQL];</code>
-     *
-     * <pre>
-     ** 变更数据的来源*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
      */
-    boolean hasSourceType();
+    int getSourceTypeValue();
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Type sourceType = 7 [default = MYSQL];</code>
-     *
-     * <pre>
-     ** 变更数据的来源*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
      */
-    Type getSourceType();
+    com.alibaba.otter.canal.protocol.CanalEntry.Type getSourceType();
 
     /**
-     * <code>optional string schemaName = 8;</code>
-     *
      * <pre>
      ** 变更数据的schemaname*
      * </pre>
+     *
+     * <code>string schemaName = 8;</code>
      */
-    boolean hasSchemaName();
+    java.lang.String getSchemaName();
     /**
-     * <code>optional string schemaName = 8;</code>
-     *
      * <pre>
      ** 变更数据的schemaname*
      * </pre>
-     */
-    String getSchemaName();
-    /**
-     * <code>optional string schemaName = 8;</code>
      *
-     * <pre>
-     ** 变更数据的schemaname*
-     * </pre>
+     * <code>string schemaName = 8;</code>
      */
     com.google.protobuf.ByteString
         getSchemaNameBytes();
 
     /**
-     * <code>optional string tableName = 9;</code>
-     *
      * <pre>
      **变更数据的tablename*
      * </pre>
+     *
+     * <code>string tableName = 9;</code>
      */
-    boolean hasTableName();
+    java.lang.String getTableName();
     /**
-     * <code>optional string tableName = 9;</code>
-     *
      * <pre>
      **变更数据的tablename*
      * </pre>
-     */
-    String getTableName();
-    /**
-     * <code>optional string tableName = 9;</code>
      *
-     * <pre>
-     **变更数据的tablename*
-     * </pre>
+     * <code>string tableName = 9;</code>
      */
     com.google.protobuf.ByteString
         getTableNameBytes();
 
     /**
-     * <code>optional int64 eventLength = 10;</code>
-     *
      * <pre>
      **每个event的长度*
      * </pre>
-     */
-    boolean hasEventLength();
-    /**
-     * <code>optional int64 eventLength = 10;</code>
      *
-     * <pre>
-     **每个event的长度*
-     * </pre>
+     * <code>int64 eventLength = 10;</code>
      */
     long getEventLength();
 
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 11 [default = UPDATE];</code>
-     *
-     * <pre>
-     **数据变更类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
      */
-    boolean hasEventType();
+    int getEventTypeValue();
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 11 [default = UPDATE];</code>
-     *
-     * <pre>
-     **数据变更类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
      */
-    EventType getEventType();
+    com.alibaba.otter.canal.protocol.CanalEntry.EventType getEventType();
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
-    java.util.List<Pair>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> 
         getPropsList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
-    Pair getProps(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
     int getPropsCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
-    java.util.List<? extends PairOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
-    PairOrBuilder getPropsOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
+        int index);
 
     /**
-     * <code>optional string gtid = 13;</code>
-     *
      * <pre>
      **当前事务的gitd*
      * </pre>
+     *
+     * <code>string gtid = 13;</code>
      */
-    boolean hasGtid();
+    java.lang.String getGtid();
     /**
-     * <code>optional string gtid = 13;</code>
-     *
      * <pre>
      **当前事务的gitd*
      * </pre>
-     */
-    String getGtid();
-    /**
-     * <code>optional string gtid = 13;</code>
      *
-     * <pre>
-     **当前事务的gitd*
-     * </pre>
+     * <code>string gtid = 13;</code>
      */
     com.google.protobuf.ByteString
         getGtidBytes();
+
+    public com.alibaba.otter.canal.protocol.CanalEntry.Header.VersionPresentCase getVersionPresentCase();
+
+    public com.alibaba.otter.canal.protocol.CanalEntry.Header.SourceTypePresentCase getSourceTypePresentCase();
+
+    public com.alibaba.otter.canal.protocol.CanalEntry.Header.EventTypePresentCase getEventTypePresentCase();
   }
   /**
-   * Protobuf type {@code com.alibaba.otter.canal.protocol.Header}
-   *
    * <pre>
    **message Header*
    * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Header}
    */
-  public static final class Header extends
-      com.google.protobuf.GeneratedMessage implements
+  public  static final class Header extends
+      com.google.protobuf.GeneratedMessageV3 implements
       // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Header)
       HeaderOrBuilder {
+  private static final long serialVersionUID = 0L;
     // Use Header.newBuilder() to construct.
-    private Header(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    private Header(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
-      this.unknownFields = builder.getUnknownFields();
     }
-    private Header(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final Header defaultInstance;
-    public static Header getDefaultInstance() {
-      return defaultInstance;
+    private Header() {
+      logfileName_ = "";
+      logfileOffset_ = 0L;
+      serverId_ = 0L;
+      serverenCode_ = "";
+      executeTime_ = 0L;
+      schemaName_ = "";
+      tableName_ = "";
+      eventLength_ = 0L;
+      props_ = java.util.Collections.emptyList();
+      gtid_ = "";
     }
 
-    public Header getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @Override
+    @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
+    getUnknownFields() {
       return this.unknownFields;
     }
     private Header(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
       int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
@@ -1610,96 +1741,87 @@ public final class CanalEntry {
             case 0:
               done = true;
               break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
             case 8: {
-              bitField0_ |= 0x00000001;
-              version_ = input.readInt32();
+              versionPresentCase_ = 1;
+              versionPresent_ = input.readInt32();
               break;
             }
             case 18: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000002;
-              logfileName_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              logfileName_ = s;
               break;
             }
             case 24: {
-              bitField0_ |= 0x00000004;
+
               logfileOffset_ = input.readInt64();
               break;
             }
             case 32: {
-              bitField0_ |= 0x00000008;
+
               serverId_ = input.readInt64();
               break;
             }
             case 42: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000010;
-              serverenCode_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              serverenCode_ = s;
               break;
             }
             case 48: {
-              bitField0_ |= 0x00000020;
+
               executeTime_ = input.readInt64();
               break;
             }
             case 56: {
               int rawValue = input.readEnum();
-              Type value = Type.valueOf(rawValue);
-              if (value == null) {
-                unknownFields.mergeVarintField(7, rawValue);
-              } else {
-                bitField0_ |= 0x00000040;
-                sourceType_ = value;
-              }
+              sourceTypePresentCase_ = 7;
+              sourceTypePresent_ = rawValue;
               break;
             }
             case 66: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000080;
-              schemaName_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              schemaName_ = s;
               break;
             }
             case 74: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000100;
-              tableName_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              tableName_ = s;
               break;
             }
             case 80: {
-              bitField0_ |= 0x00000200;
+
               eventLength_ = input.readInt64();
               break;
             }
             case 88: {
               int rawValue = input.readEnum();
-              EventType value = EventType.valueOf(rawValue);
-              if (value == null) {
-                unknownFields.mergeVarintField(11, rawValue);
-              } else {
-                bitField0_ |= 0x00000400;
-                eventType_ = value;
-              }
+              eventTypePresentCase_ = 11;
+              eventTypePresent_ = rawValue;
               break;
             }
             case 98: {
               if (!((mutable_bitField0_ & 0x00000800) == 0x00000800)) {
-                props_ = new java.util.ArrayList<Pair>();
+                props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>();
                 mutable_bitField0_ |= 0x00000800;
               }
-              props_.add(input.readMessage(Pair.PARSER, extensionRegistry));
+              props_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Pair.parser(), extensionRegistry));
               break;
             }
             case 106: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000800;
-              gtid_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              gtid_ = s;
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
               break;
             }
           }
@@ -1708,7 +1830,7 @@ public final class CanalEntry {
         throw e.setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
+            e).setUnfinishedMessage(this);
       } finally {
         if (((mutable_bitField0_ & 0x00000800) == 0x00000800)) {
           props_ = java.util.Collections.unmodifiableList(props_);
@@ -1719,102 +1841,172 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_descriptor;
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_descriptor;
     }
 
-    protected FieldAccessorTable
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_fieldAccessorTable
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              Header.class, Builder.class);
-    }
-
-    public static com.google.protobuf.Parser<Header> PARSER =
-        new com.google.protobuf.AbstractParser<Header>() {
-      public Header parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new Header(input, extensionRegistry);
-      }
-    };
-
-    @Override
-    public com.google.protobuf.Parser<Header> getParserForType() {
-      return PARSER;
+              com.alibaba.otter.canal.protocol.CanalEntry.Header.class, com.alibaba.otter.canal.protocol.CanalEntry.Header.Builder.class);
     }
 
     private int bitField0_;
-    public static final int VERSION_FIELD_NUMBER = 1;
-    private int version_;
-    /**
-     * <code>optional int32 version = 1 [default = 1];</code>
-     *
-     * <pre>
-     **协议的版本号*
-     * </pre>
-     */
-    public boolean hasVersion() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
+    private int versionPresentCase_ = 0;
+    private java.lang.Object versionPresent_;
+    public enum VersionPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      VERSION(1),
+      VERSIONPRESENT_NOT_SET(0);
+      private final int value;
+      private VersionPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static VersionPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static VersionPresentCase forNumber(int value) {
+        switch (value) {
+          case 1: return VERSION;
+          case 0: return VERSIONPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public VersionPresentCase
+    getVersionPresentCase() {
+      return VersionPresentCase.forNumber(
+          versionPresentCase_);
     }
+
+    private int sourceTypePresentCase_ = 0;
+    private java.lang.Object sourceTypePresent_;
+    public enum SourceTypePresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      SOURCETYPE(7),
+      SOURCETYPEPRESENT_NOT_SET(0);
+      private final int value;
+      private SourceTypePresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static SourceTypePresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static SourceTypePresentCase forNumber(int value) {
+        switch (value) {
+          case 7: return SOURCETYPE;
+          case 0: return SOURCETYPEPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public SourceTypePresentCase
+    getSourceTypePresentCase() {
+      return SourceTypePresentCase.forNumber(
+          sourceTypePresentCase_);
+    }
+
+    private int eventTypePresentCase_ = 0;
+    private java.lang.Object eventTypePresent_;
+    public enum EventTypePresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      EVENTTYPE(11),
+      EVENTTYPEPRESENT_NOT_SET(0);
+      private final int value;
+      private EventTypePresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static EventTypePresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static EventTypePresentCase forNumber(int value) {
+        switch (value) {
+          case 11: return EVENTTYPE;
+          case 0: return EVENTTYPEPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public EventTypePresentCase
+    getEventTypePresentCase() {
+      return EventTypePresentCase.forNumber(
+          eventTypePresentCase_);
+    }
+
+    public static final int VERSION_FIELD_NUMBER = 1;
     /**
-     * <code>optional int32 version = 1 [default = 1];</code>
-     *
-     * <pre>
-     **协议的版本号*
-     * </pre>
+     * <code>int32 version = 1;</code>
      */
     public int getVersion() {
-      return version_;
+      if (versionPresentCase_ == 1) {
+        return (java.lang.Integer) versionPresent_;
+      }
+      return 1;
     }
 
     public static final int LOGFILENAME_FIELD_NUMBER = 2;
-    private Object logfileName_;
+    private volatile java.lang.Object logfileName_;
     /**
-     * <code>optional string logfileName = 2;</code>
-     *
      * <pre>
      **binlog/redolog 文件名*
      * </pre>
-     */
-    public boolean hasLogfileName() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
-    }
-    /**
-     * <code>optional string logfileName = 2;</code>
      *
-     * <pre>
-     **binlog/redolog 文件名*
-     * </pre>
+     * <code>string logfileName = 2;</code>
      */
-    public String getLogfileName() {
-      Object ref = logfileName_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getLogfileName() {
+      java.lang.Object ref = logfileName_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          logfileName_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        logfileName_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string logfileName = 2;</code>
-     *
      * <pre>
      **binlog/redolog 文件名*
      * </pre>
+     *
+     * <code>string logfileName = 2;</code>
      */
     public com.google.protobuf.ByteString
         getLogfileNameBytes() {
-      Object ref = logfileName_;
-      if (ref instanceof String) {
+      java.lang.Object ref = logfileName_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         logfileName_ = b;
         return b;
       } else {
@@ -1825,21 +2017,11 @@ public final class CanalEntry {
     public static final int LOGFILEOFFSET_FIELD_NUMBER = 3;
     private long logfileOffset_;
     /**
-     * <code>optional int64 logfileOffset = 3;</code>
-     *
      * <pre>
      **binlog/redolog 文件的偏移位置*
      * </pre>
-     */
-    public boolean hasLogfileOffset() {
-      return ((bitField0_ & 0x00000004) == 0x00000004);
-    }
-    /**
-     * <code>optional int64 logfileOffset = 3;</code>
      *
-     * <pre>
-     **binlog/redolog 文件的偏移位置*
-     * </pre>
+     * <code>int64 logfileOffset = 3;</code>
      */
     public long getLogfileOffset() {
       return logfileOffset_;
@@ -1848,73 +2030,51 @@ public final class CanalEntry {
     public static final int SERVERID_FIELD_NUMBER = 4;
     private long serverId_;
     /**
-     * <code>optional int64 serverId = 4;</code>
-     *
      * <pre>
      **服务端serverId*
      * </pre>
-     */
-    public boolean hasServerId() {
-      return ((bitField0_ & 0x00000008) == 0x00000008);
-    }
-    /**
-     * <code>optional int64 serverId = 4;</code>
      *
-     * <pre>
-     **服务端serverId*
-     * </pre>
+     * <code>int64 serverId = 4;</code>
      */
     public long getServerId() {
       return serverId_;
     }
 
     public static final int SERVERENCODE_FIELD_NUMBER = 5;
-    private Object serverenCode_;
+    private volatile java.lang.Object serverenCode_;
     /**
-     * <code>optional string serverenCode = 5;</code>
-     *
      * <pre>
      ** 变更数据的编码 *
      * </pre>
-     */
-    public boolean hasServerenCode() {
-      return ((bitField0_ & 0x00000010) == 0x00000010);
-    }
-    /**
-     * <code>optional string serverenCode = 5;</code>
      *
-     * <pre>
-     ** 变更数据的编码 *
-     * </pre>
+     * <code>string serverenCode = 5;</code>
      */
-    public String getServerenCode() {
-      Object ref = serverenCode_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getServerenCode() {
+      java.lang.Object ref = serverenCode_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          serverenCode_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        serverenCode_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string serverenCode = 5;</code>
-     *
      * <pre>
      ** 变更数据的编码 *
      * </pre>
+     *
+     * <code>string serverenCode = 5;</code>
      */
     public com.google.protobuf.ByteString
         getServerenCodeBytes() {
-      Object ref = serverenCode_;
-      if (ref instanceof String) {
+      java.lang.Object ref = serverenCode_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         serverenCode_ = b;
         return b;
       } else {
@@ -1925,96 +2085,74 @@ public final class CanalEntry {
     public static final int EXECUTETIME_FIELD_NUMBER = 6;
     private long executeTime_;
     /**
-     * <code>optional int64 executeTime = 6;</code>
-     *
      * <pre>
      **变更数据的执行时间 *
      * </pre>
-     */
-    public boolean hasExecuteTime() {
-      return ((bitField0_ & 0x00000020) == 0x00000020);
-    }
-    /**
-     * <code>optional int64 executeTime = 6;</code>
      *
-     * <pre>
-     **变更数据的执行时间 *
-     * </pre>
+     * <code>int64 executeTime = 6;</code>
      */
     public long getExecuteTime() {
       return executeTime_;
     }
 
     public static final int SOURCETYPE_FIELD_NUMBER = 7;
-    private Type sourceType_;
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Type sourceType = 7 [default = MYSQL];</code>
-     *
-     * <pre>
-     ** 变更数据的来源*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
      */
-    public boolean hasSourceType() {
-      return ((bitField0_ & 0x00000040) == 0x00000040);
+    public int getSourceTypeValue() {
+      if (sourceTypePresentCase_ == 7) {
+        return (java.lang.Integer) sourceTypePresent_;
+      }
+      return 0;
     }
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.Type sourceType = 7 [default = MYSQL];</code>
-     *
-     * <pre>
-     ** 变更数据的来源*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
      */
-    public Type getSourceType() {
-      return sourceType_;
+    public com.alibaba.otter.canal.protocol.CanalEntry.Type getSourceType() {
+      if (sourceTypePresentCase_ == 7) {
+        @SuppressWarnings("deprecation")
+        com.alibaba.otter.canal.protocol.CanalEntry.Type result = com.alibaba.otter.canal.protocol.CanalEntry.Type.valueOf(
+            (java.lang.Integer) sourceTypePresent_);
+        return result == null ? com.alibaba.otter.canal.protocol.CanalEntry.Type.UNRECOGNIZED : result;
+      }
+      return com.alibaba.otter.canal.protocol.CanalEntry.Type.TYPECOMPATIBLEPROTO2;
     }
 
     public static final int SCHEMANAME_FIELD_NUMBER = 8;
-    private Object schemaName_;
+    private volatile java.lang.Object schemaName_;
     /**
-     * <code>optional string schemaName = 8;</code>
-     *
      * <pre>
      ** 变更数据的schemaname*
      * </pre>
-     */
-    public boolean hasSchemaName() {
-      return ((bitField0_ & 0x00000080) == 0x00000080);
-    }
-    /**
-     * <code>optional string schemaName = 8;</code>
      *
-     * <pre>
-     ** 变更数据的schemaname*
-     * </pre>
+     * <code>string schemaName = 8;</code>
      */
-    public String getSchemaName() {
-      Object ref = schemaName_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getSchemaName() {
+      java.lang.Object ref = schemaName_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          schemaName_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        schemaName_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string schemaName = 8;</code>
-     *
      * <pre>
      ** 变更数据的schemaname*
      * </pre>
+     *
+     * <code>string schemaName = 8;</code>
      */
     public com.google.protobuf.ByteString
         getSchemaNameBytes() {
-      Object ref = schemaName_;
-      if (ref instanceof String) {
+      java.lang.Object ref = schemaName_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         schemaName_ = b;
         return b;
       } else {
@@ -2023,52 +2161,40 @@ public final class CanalEntry {
     }
 
     public static final int TABLENAME_FIELD_NUMBER = 9;
-    private Object tableName_;
+    private volatile java.lang.Object tableName_;
     /**
-     * <code>optional string tableName = 9;</code>
-     *
      * <pre>
      **变更数据的tablename*
      * </pre>
-     */
-    public boolean hasTableName() {
-      return ((bitField0_ & 0x00000100) == 0x00000100);
-    }
-    /**
-     * <code>optional string tableName = 9;</code>
      *
-     * <pre>
-     **变更数据的tablename*
-     * </pre>
+     * <code>string tableName = 9;</code>
      */
-    public String getTableName() {
-      Object ref = tableName_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getTableName() {
+      java.lang.Object ref = tableName_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          tableName_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        tableName_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string tableName = 9;</code>
-     *
      * <pre>
      **变更数据的tablename*
      * </pre>
+     *
+     * <code>string tableName = 9;</code>
      */
     public com.google.protobuf.ByteString
         getTableNameBytes() {
-      Object ref = tableName_;
-      if (ref instanceof String) {
+      java.lang.Object ref = tableName_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         tableName_ = b;
         return b;
       } else {
@@ -2079,151 +2205,129 @@ public final class CanalEntry {
     public static final int EVENTLENGTH_FIELD_NUMBER = 10;
     private long eventLength_;
     /**
-     * <code>optional int64 eventLength = 10;</code>
-     *
      * <pre>
      **每个event的长度*
      * </pre>
-     */
-    public boolean hasEventLength() {
-      return ((bitField0_ & 0x00000200) == 0x00000200);
-    }
-    /**
-     * <code>optional int64 eventLength = 10;</code>
      *
-     * <pre>
-     **每个event的长度*
-     * </pre>
+     * <code>int64 eventLength = 10;</code>
      */
     public long getEventLength() {
       return eventLength_;
     }
 
     public static final int EVENTTYPE_FIELD_NUMBER = 11;
-    private EventType eventType_;
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 11 [default = UPDATE];</code>
-     *
-     * <pre>
-     **数据变更类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
      */
-    public boolean hasEventType() {
-      return ((bitField0_ & 0x00000400) == 0x00000400);
+    public int getEventTypeValue() {
+      if (eventTypePresentCase_ == 11) {
+        return (java.lang.Integer) eventTypePresent_;
+      }
+      return 0;
     }
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 11 [default = UPDATE];</code>
-     *
-     * <pre>
-     **数据变更类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
      */
-    public EventType getEventType() {
-      return eventType_;
+    public com.alibaba.otter.canal.protocol.CanalEntry.EventType getEventType() {
+      if (eventTypePresentCase_ == 11) {
+        @SuppressWarnings("deprecation")
+        com.alibaba.otter.canal.protocol.CanalEntry.EventType result = com.alibaba.otter.canal.protocol.CanalEntry.EventType.valueOf(
+            (java.lang.Integer) eventTypePresent_);
+        return result == null ? com.alibaba.otter.canal.protocol.CanalEntry.EventType.UNRECOGNIZED : result;
+      }
+      return com.alibaba.otter.canal.protocol.CanalEntry.EventType.EVENTTYPECOMPATIBLEPROTO2;
     }
 
     public static final int PROPS_FIELD_NUMBER = 12;
-    private java.util.List<Pair> props_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
-    public java.util.List<Pair> getPropsList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
-    public java.util.List<? extends PairOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
     public int getPropsCount() {
       return props_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
-    public Pair getProps(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
       return props_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
      */
-    public PairOrBuilder getPropsOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
         int index) {
       return props_.get(index);
     }
 
     public static final int GTID_FIELD_NUMBER = 13;
-    private Object gtid_;
+    private volatile java.lang.Object gtid_;
     /**
-     * <code>optional string gtid = 13;</code>
-     *
      * <pre>
      **当前事务的gitd*
      * </pre>
-     */
-    public boolean hasGtid() {
-      return ((bitField0_ & 0x00000800) == 0x00000800);
-    }
-    /**
-     * <code>optional string gtid = 13;</code>
      *
-     * <pre>
-     **当前事务的gitd*
-     * </pre>
+     * <code>string gtid = 13;</code>
      */
-    public String getGtid() {
-      Object ref = gtid_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getGtid() {
+      java.lang.Object ref = gtid_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          gtid_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        gtid_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string gtid = 13;</code>
-     *
      * <pre>
      **当前事务的gitd*
      * </pre>
+     *
+     * <code>string gtid = 13;</code>
      */
     public com.google.protobuf.ByteString
         getGtidBytes() {
-      Object ref = gtid_;
-      if (ref instanceof String) {
+      java.lang.Object ref = gtid_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         gtid_ = b;
         return b;
       } else {
@@ -2231,22 +2335,8 @@ public final class CanalEntry {
       }
     }
 
-    private void initFields() {
-      version_ = 1;
-      logfileName_ = "";
-      logfileOffset_ = 0L;
-      serverId_ = 0L;
-      serverenCode_ = "";
-      executeTime_ = 0L;
-      sourceType_ = Type.MYSQL;
-      schemaName_ = "";
-      tableName_ = "";
-      eventLength_ = 0L;
-      eventType_ = EventType.UPDATE;
-      props_ = java.util.Collections.emptyList();
-      gtid_ = "";
-    }
     private byte memoizedIsInitialized = -1;
+    @java.lang.Override
     public final boolean isInitialized() {
       byte isInitialized = memoizedIsInitialized;
       if (isInitialized == 1) return true;
@@ -2256,208 +2346,353 @@ public final class CanalEntry {
       return true;
     }
 
+    @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        output.writeInt32(1, version_);
+      if (versionPresentCase_ == 1) {
+        output.writeInt32(
+            1, (int)((java.lang.Integer) versionPresent_));
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeBytes(2, getLogfileNameBytes());
+      if (!getLogfileNameBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, logfileName_);
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+      if (logfileOffset_ != 0L) {
         output.writeInt64(3, logfileOffset_);
       }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
+      if (serverId_ != 0L) {
         output.writeInt64(4, serverId_);
       }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
-        output.writeBytes(5, getServerenCodeBytes());
+      if (!getServerenCodeBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 5, serverenCode_);
       }
-      if (((bitField0_ & 0x00000020) == 0x00000020)) {
+      if (executeTime_ != 0L) {
         output.writeInt64(6, executeTime_);
       }
-      if (((bitField0_ & 0x00000040) == 0x00000040)) {
-        output.writeEnum(7, sourceType_.getNumber());
+      if (sourceTypePresentCase_ == 7) {
+        output.writeEnum(7, ((java.lang.Integer) sourceTypePresent_));
       }
-      if (((bitField0_ & 0x00000080) == 0x00000080)) {
-        output.writeBytes(8, getSchemaNameBytes());
+      if (!getSchemaNameBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 8, schemaName_);
       }
-      if (((bitField0_ & 0x00000100) == 0x00000100)) {
-        output.writeBytes(9, getTableNameBytes());
+      if (!getTableNameBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 9, tableName_);
       }
-      if (((bitField0_ & 0x00000200) == 0x00000200)) {
+      if (eventLength_ != 0L) {
         output.writeInt64(10, eventLength_);
       }
-      if (((bitField0_ & 0x00000400) == 0x00000400)) {
-        output.writeEnum(11, eventType_.getNumber());
+      if (eventTypePresentCase_ == 11) {
+        output.writeEnum(11, ((java.lang.Integer) eventTypePresent_));
       }
       for (int i = 0; i < props_.size(); i++) {
         output.writeMessage(12, props_.get(i));
       }
-      if (((bitField0_ & 0x00000800) == 0x00000800)) {
-        output.writeBytes(13, getGtidBytes());
+      if (!getGtidBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 13, gtid_);
       }
-      getUnknownFields().writeTo(output);
+      unknownFields.writeTo(output);
     }
 
-    private int memoizedSerializedSize = -1;
+    @java.lang.Override
     public int getSerializedSize() {
-      int size = memoizedSerializedSize;
+      int size = memoizedSize;
       if (size != -1) return size;
 
       size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (versionPresentCase_ == 1) {
         size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(1, version_);
+          .computeInt32Size(
+              1, (int)((java.lang.Integer) versionPresent_));
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(2, getLogfileNameBytes());
+      if (!getLogfileNameBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, logfileName_);
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+      if (logfileOffset_ != 0L) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt64Size(3, logfileOffset_);
       }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
+      if (serverId_ != 0L) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt64Size(4, serverId_);
       }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(5, getServerenCodeBytes());
+      if (!getServerenCodeBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, serverenCode_);
       }
-      if (((bitField0_ & 0x00000020) == 0x00000020)) {
+      if (executeTime_ != 0L) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt64Size(6, executeTime_);
       }
-      if (((bitField0_ & 0x00000040) == 0x00000040)) {
+      if (sourceTypePresentCase_ == 7) {
         size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(7, sourceType_.getNumber());
+          .computeEnumSize(7, ((java.lang.Integer) sourceTypePresent_));
       }
-      if (((bitField0_ & 0x00000080) == 0x00000080)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(8, getSchemaNameBytes());
+      if (!getSchemaNameBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, schemaName_);
       }
-      if (((bitField0_ & 0x00000100) == 0x00000100)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(9, getTableNameBytes());
+      if (!getTableNameBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(9, tableName_);
       }
-      if (((bitField0_ & 0x00000200) == 0x00000200)) {
+      if (eventLength_ != 0L) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt64Size(10, eventLength_);
       }
-      if (((bitField0_ & 0x00000400) == 0x00000400)) {
+      if (eventTypePresentCase_ == 11) {
         size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(11, eventType_.getNumber());
+          .computeEnumSize(11, ((java.lang.Integer) eventTypePresent_));
       }
       for (int i = 0; i < props_.size(); i++) {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(12, props_.get(i));
       }
-      if (((bitField0_ & 0x00000800) == 0x00000800)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(13, getGtidBytes());
+      if (!getGtidBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(13, gtid_);
       }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
       return size;
     }
 
-    private static final long serialVersionUID = 0L;
-    @Override
-    protected Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalEntry.Header)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalEntry.Header other = (com.alibaba.otter.canal.protocol.CanalEntry.Header) obj;
+
+      boolean result = true;
+      result = result && getLogfileName()
+          .equals(other.getLogfileName());
+      result = result && (getLogfileOffset()
+          == other.getLogfileOffset());
+      result = result && (getServerId()
+          == other.getServerId());
+      result = result && getServerenCode()
+          .equals(other.getServerenCode());
+      result = result && (getExecuteTime()
+          == other.getExecuteTime());
+      result = result && getSchemaName()
+          .equals(other.getSchemaName());
+      result = result && getTableName()
+          .equals(other.getTableName());
+      result = result && (getEventLength()
+          == other.getEventLength());
+      result = result && getPropsList()
+          .equals(other.getPropsList());
+      result = result && getGtid()
+          .equals(other.getGtid());
+      result = result && getVersionPresentCase().equals(
+          other.getVersionPresentCase());
+      if (!result) return false;
+      switch (versionPresentCase_) {
+        case 1:
+          result = result && (getVersion()
+              == other.getVersion());
+          break;
+        case 0:
+        default:
+      }
+      result = result && getSourceTypePresentCase().equals(
+          other.getSourceTypePresentCase());
+      if (!result) return false;
+      switch (sourceTypePresentCase_) {
+        case 7:
+          result = result && getSourceTypeValue()
+              == other.getSourceTypeValue();
+          break;
+        case 0:
+        default:
+      }
+      result = result && getEventTypePresentCase().equals(
+          other.getEventTypePresentCase());
+      if (!result) return false;
+      switch (eventTypePresentCase_) {
+        case 11:
+          result = result && getEventTypeValue()
+              == other.getEventTypeValue();
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
     }
 
-    public static Header parseFrom(
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + LOGFILENAME_FIELD_NUMBER;
+      hash = (53 * hash) + getLogfileName().hashCode();
+      hash = (37 * hash) + LOGFILEOFFSET_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getLogfileOffset());
+      hash = (37 * hash) + SERVERID_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getServerId());
+      hash = (37 * hash) + SERVERENCODE_FIELD_NUMBER;
+      hash = (53 * hash) + getServerenCode().hashCode();
+      hash = (37 * hash) + EXECUTETIME_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getExecuteTime());
+      hash = (37 * hash) + SCHEMANAME_FIELD_NUMBER;
+      hash = (53 * hash) + getSchemaName().hashCode();
+      hash = (37 * hash) + TABLENAME_FIELD_NUMBER;
+      hash = (53 * hash) + getTableName().hashCode();
+      hash = (37 * hash) + EVENTLENGTH_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getEventLength());
+      if (getPropsCount() > 0) {
+        hash = (37 * hash) + PROPS_FIELD_NUMBER;
+        hash = (53 * hash) + getPropsList().hashCode();
+      }
+      hash = (37 * hash) + GTID_FIELD_NUMBER;
+      hash = (53 * hash) + getGtid().hashCode();
+      switch (versionPresentCase_) {
+        case 1:
+          hash = (37 * hash) + VERSION_FIELD_NUMBER;
+          hash = (53 * hash) + getVersion();
+          break;
+        case 0:
+        default:
+      }
+      switch (sourceTypePresentCase_) {
+        case 7:
+          hash = (37 * hash) + SOURCETYPE_FIELD_NUMBER;
+          hash = (53 * hash) + getSourceTypeValue();
+          break;
+        case 0:
+        default:
+      }
+      switch (eventTypePresentCase_) {
+        case 11:
+          hash = (37 * hash) + EVENTTYPE_FIELD_NUMBER;
+          hash = (53 * hash) + getEventTypeValue();
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static Header parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static Header parseFrom(byte[] data)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static Header parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static Header parseFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static Header parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static Header parseDelimitedFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
     }
-    public static Header parseDelimitedFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static Header parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static Header parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
-    public static Builder newBuilder() { return Builder.create(); }
+    @java.lang.Override
     public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(Header prototype) {
-      return newBuilder().mergeFrom(prototype);
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalEntry.Header prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
     }
-    public Builder toBuilder() { return newBuilder(this); }
 
-    @Override
+    @java.lang.Override
     protected Builder newBuilderForType(
-        BuilderParent parent) {
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Header}
-     *
      * <pre>
      **message Header*
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Header}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Header)
-        HeaderOrBuilder {
+        com.alibaba.otter.canal.protocol.CanalEntry.HeaderOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_descriptor;
       }
 
-      protected FieldAccessorTable
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_fieldAccessorTable
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                Header.class, Builder.class);
+                com.alibaba.otter.canal.protocol.CanalEntry.Header.class, com.alibaba.otter.canal.protocol.CanalEntry.Header.Builder.class);
       }
 
       // Construct using com.alibaba.otter.canal.protocol.CanalEntry.Header.newBuilder()
@@ -2466,43 +2701,35 @@ public final class CanalEntry {
       }
 
       private Builder(
-          BuilderParent parent) {
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
         super(parent);
         maybeForceBuilderInitialization();
       }
       private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
           getPropsFieldBuilder();
         }
       }
-      private static Builder create() {
-        return new Builder();
-      }
-
+      @java.lang.Override
       public Builder clear() {
         super.clear();
-        version_ = 1;
-        bitField0_ = (bitField0_ & ~0x00000001);
         logfileName_ = "";
-        bitField0_ = (bitField0_ & ~0x00000002);
+
         logfileOffset_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000004);
+
         serverId_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000008);
+
         serverenCode_ = "";
-        bitField0_ = (bitField0_ & ~0x00000010);
+
         executeTime_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000020);
-        sourceType_ = Type.MYSQL;
-        bitField0_ = (bitField0_ & ~0x00000040);
+
         schemaName_ = "";
-        bitField0_ = (bitField0_ & ~0x00000080);
+
         tableName_ = "";
-        bitField0_ = (bitField0_ & ~0x00000100);
+
         eventLength_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000200);
-        eventType_ = EventType.UPDATE;
-        bitField0_ = (bitField0_ & ~0x00000400);
+
         if (propsBuilder_ == null) {
           props_ = java.util.Collections.emptyList();
           bitField0_ = (bitField0_ & ~0x00000800);
@@ -2510,79 +2737,58 @@ public final class CanalEntry {
           propsBuilder_.clear();
         }
         gtid_ = "";
-        bitField0_ = (bitField0_ & ~0x00001000);
+
+        versionPresentCase_ = 0;
+        versionPresent_ = null;
+        sourceTypePresentCase_ = 0;
+        sourceTypePresent_ = null;
+        eventTypePresentCase_ = 0;
+        eventTypePresent_ = null;
         return this;
       }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
+      @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Header_descriptor;
       }
 
-      public Header getDefaultInstanceForType() {
-        return Header.getDefaultInstance();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Header getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalEntry.Header.getDefaultInstance();
       }
 
-      public Header build() {
-        Header result = buildPartial();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Header build() {
+        com.alibaba.otter.canal.protocol.CanalEntry.Header result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
         return result;
       }
 
-      public Header buildPartial() {
-        Header result = new Header(this);
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Header buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalEntry.Header result = new com.alibaba.otter.canal.protocol.CanalEntry.Header(this);
         int from_bitField0_ = bitField0_;
         int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
-        }
-        result.version_ = version_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
+        if (versionPresentCase_ == 1) {
+          result.versionPresent_ = versionPresent_;
         }
         result.logfileName_ = logfileName_;
-        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-          to_bitField0_ |= 0x00000004;
-        }
         result.logfileOffset_ = logfileOffset_;
-        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-          to_bitField0_ |= 0x00000008;
-        }
         result.serverId_ = serverId_;
-        if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
-          to_bitField0_ |= 0x00000010;
-        }
         result.serverenCode_ = serverenCode_;
-        if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
-          to_bitField0_ |= 0x00000020;
-        }
         result.executeTime_ = executeTime_;
-        if (((from_bitField0_ & 0x00000040) == 0x00000040)) {
-          to_bitField0_ |= 0x00000040;
-        }
-        result.sourceType_ = sourceType_;
-        if (((from_bitField0_ & 0x00000080) == 0x00000080)) {
-          to_bitField0_ |= 0x00000080;
+        if (sourceTypePresentCase_ == 7) {
+          result.sourceTypePresent_ = sourceTypePresent_;
         }
         result.schemaName_ = schemaName_;
-        if (((from_bitField0_ & 0x00000100) == 0x00000100)) {
-          to_bitField0_ |= 0x00000100;
-        }
         result.tableName_ = tableName_;
-        if (((from_bitField0_ & 0x00000200) == 0x00000200)) {
-          to_bitField0_ |= 0x00000200;
-        }
         result.eventLength_ = eventLength_;
-        if (((from_bitField0_ & 0x00000400) == 0x00000400)) {
-          to_bitField0_ |= 0x00000400;
+        if (eventTypePresentCase_ == 11) {
+          result.eventTypePresent_ = eventTypePresent_;
         }
-        result.eventType_ = eventType_;
         if (propsBuilder_ == null) {
           if (((bitField0_ & 0x00000800) == 0x00000800)) {
             props_ = java.util.Collections.unmodifiableList(props_);
@@ -2592,67 +2798,87 @@ public final class CanalEntry {
         } else {
           result.props_ = propsBuilder_.build();
         }
-        if (((from_bitField0_ & 0x00001000) == 0x00001000)) {
-          to_bitField0_ |= 0x00000800;
-        }
         result.gtid_ = gtid_;
         result.bitField0_ = to_bitField0_;
+        result.versionPresentCase_ = versionPresentCase_;
+        result.sourceTypePresentCase_ = sourceTypePresentCase_;
+        result.eventTypePresentCase_ = eventTypePresentCase_;
         onBuilt();
         return result;
       }
 
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof Header) {
-          return mergeFrom((Header)other);
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalEntry.Header) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalEntry.Header)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(Header other) {
-        if (other == Header.getDefaultInstance()) return this;
-        if (other.hasVersion()) {
-          setVersion(other.getVersion());
-        }
-        if (other.hasLogfileName()) {
-          bitField0_ |= 0x00000002;
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalEntry.Header other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalEntry.Header.getDefaultInstance()) return this;
+        if (!other.getLogfileName().isEmpty()) {
           logfileName_ = other.logfileName_;
           onChanged();
         }
-        if (other.hasLogfileOffset()) {
+        if (other.getLogfileOffset() != 0L) {
           setLogfileOffset(other.getLogfileOffset());
         }
-        if (other.hasServerId()) {
+        if (other.getServerId() != 0L) {
           setServerId(other.getServerId());
         }
-        if (other.hasServerenCode()) {
-          bitField0_ |= 0x00000010;
+        if (!other.getServerenCode().isEmpty()) {
           serverenCode_ = other.serverenCode_;
           onChanged();
         }
-        if (other.hasExecuteTime()) {
+        if (other.getExecuteTime() != 0L) {
           setExecuteTime(other.getExecuteTime());
         }
-        if (other.hasSourceType()) {
-          setSourceType(other.getSourceType());
-        }
-        if (other.hasSchemaName()) {
-          bitField0_ |= 0x00000080;
+        if (!other.getSchemaName().isEmpty()) {
           schemaName_ = other.schemaName_;
           onChanged();
         }
-        if (other.hasTableName()) {
-          bitField0_ |= 0x00000100;
+        if (!other.getTableName().isEmpty()) {
           tableName_ = other.tableName_;
           onChanged();
         }
-        if (other.hasEventLength()) {
+        if (other.getEventLength() != 0L) {
           setEventLength(other.getEventLength());
         }
-        if (other.hasEventType()) {
-          setEventType(other.getEventType());
-        }
         if (propsBuilder_ == null) {
           if (!other.props_.isEmpty()) {
             if (props_.isEmpty()) {
@@ -2672,36 +2898,65 @@ public final class CanalEntry {
               props_ = other.props_;
               bitField0_ = (bitField0_ & ~0x00000800);
               propsBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getPropsFieldBuilder() : null;
             } else {
               propsBuilder_.addAllMessages(other.props_);
             }
           }
         }
-        if (other.hasGtid()) {
-          bitField0_ |= 0x00001000;
+        if (!other.getGtid().isEmpty()) {
           gtid_ = other.gtid_;
           onChanged();
         }
-        this.mergeUnknownFields(other.getUnknownFields());
+        switch (other.getVersionPresentCase()) {
+          case VERSION: {
+            setVersion(other.getVersion());
+            break;
+          }
+          case VERSIONPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        switch (other.getSourceTypePresentCase()) {
+          case SOURCETYPE: {
+            setSourceTypeValue(other.getSourceTypeValue());
+            break;
+          }
+          case SOURCETYPEPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        switch (other.getEventTypePresentCase()) {
+          case EVENTTYPE: {
+            setEventTypeValue(other.getEventTypeValue());
+            break;
+          }
+          case EVENTTYPEPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
         return this;
       }
 
+      @java.lang.Override
       public final boolean isInitialized() {
         return true;
       }
 
+      @java.lang.Override
       public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        Header parsedMessage = null;
+        com.alibaba.otter.canal.protocol.CanalEntry.Header parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (Header) e.getUnfinishedMessage();
-          throw e;
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalEntry.Header) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
             mergeFrom(parsedMessage);
@@ -2709,102 +2964,117 @@ public final class CanalEntry {
         }
         return this;
       }
+      private int versionPresentCase_ = 0;
+      private java.lang.Object versionPresent_;
+      public VersionPresentCase
+          getVersionPresentCase() {
+        return VersionPresentCase.forNumber(
+            versionPresentCase_);
+      }
+
+      public Builder clearVersionPresent() {
+        versionPresentCase_ = 0;
+        versionPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+      private int sourceTypePresentCase_ = 0;
+      private java.lang.Object sourceTypePresent_;
+      public SourceTypePresentCase
+          getSourceTypePresentCase() {
+        return SourceTypePresentCase.forNumber(
+            sourceTypePresentCase_);
+      }
+
+      public Builder clearSourceTypePresent() {
+        sourceTypePresentCase_ = 0;
+        sourceTypePresent_ = null;
+        onChanged();
+        return this;
+      }
+
+      private int eventTypePresentCase_ = 0;
+      private java.lang.Object eventTypePresent_;
+      public EventTypePresentCase
+          getEventTypePresentCase() {
+        return EventTypePresentCase.forNumber(
+            eventTypePresentCase_);
+      }
+
+      public Builder clearEventTypePresent() {
+        eventTypePresentCase_ = 0;
+        eventTypePresent_ = null;
+        onChanged();
+        return this;
+      }
+
       private int bitField0_;
 
-      private int version_ = 1;
       /**
-       * <code>optional int32 version = 1 [default = 1];</code>
-       *
-       * <pre>
-       **协议的版本号*
-       * </pre>
-       */
-      public boolean hasVersion() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>optional int32 version = 1 [default = 1];</code>
-       *
-       * <pre>
-       **协议的版本号*
-       * </pre>
+       * <code>int32 version = 1;</code>
        */
       public int getVersion() {
-        return version_;
+        if (versionPresentCase_ == 1) {
+          return (java.lang.Integer) versionPresent_;
+        }
+        return 0;
       }
       /**
-       * <code>optional int32 version = 1 [default = 1];</code>
-       *
-       * <pre>
-       **协议的版本号*
-       * </pre>
+       * <code>int32 version = 1;</code>
        */
       public Builder setVersion(int value) {
-        bitField0_ |= 0x00000001;
-        version_ = value;
+        versionPresentCase_ = 1;
+        versionPresent_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int32 version = 1 [default = 1];</code>
-       *
-       * <pre>
-       **协议的版本号*
-       * </pre>
+       * <code>int32 version = 1;</code>
        */
       public Builder clearVersion() {
-        bitField0_ = (bitField0_ & ~0x00000001);
-        version_ = 1;
-        onChanged();
+        if (versionPresentCase_ == 1) {
+          versionPresentCase_ = 0;
+          versionPresent_ = null;
+          onChanged();
+        }
         return this;
       }
 
-      private Object logfileName_ = "";
+      private java.lang.Object logfileName_ = "";
       /**
-       * <code>optional string logfileName = 2;</code>
-       *
        * <pre>
        **binlog/redolog 文件名*
        * </pre>
-       */
-      public boolean hasLogfileName() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>optional string logfileName = 2;</code>
        *
-       * <pre>
-       **binlog/redolog 文件名*
-       * </pre>
+       * <code>string logfileName = 2;</code>
        */
-      public String getLogfileName() {
-        Object ref = logfileName_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getLogfileName() {
+        java.lang.Object ref = logfileName_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            logfileName_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          logfileName_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string logfileName = 2;</code>
-       *
        * <pre>
        **binlog/redolog 文件名*
        * </pre>
+       *
+       * <code>string logfileName = 2;</code>
        */
       public com.google.protobuf.ByteString
           getLogfileNameBytes() {
-        Object ref = logfileName_;
+        java.lang.Object ref = logfileName_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           logfileName_ = b;
           return b;
         } else {
@@ -2812,48 +3082,49 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string logfileName = 2;</code>
-       *
        * <pre>
        **binlog/redolog 文件名*
        * </pre>
+       *
+       * <code>string logfileName = 2;</code>
        */
       public Builder setLogfileName(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000002;
+  
         logfileName_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string logfileName = 2;</code>
-       *
        * <pre>
        **binlog/redolog 文件名*
        * </pre>
+       *
+       * <code>string logfileName = 2;</code>
        */
       public Builder clearLogfileName() {
-        bitField0_ = (bitField0_ & ~0x00000002);
+        
         logfileName_ = getDefaultInstance().getLogfileName();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string logfileName = 2;</code>
-       *
        * <pre>
        **binlog/redolog 文件名*
        * </pre>
+       *
+       * <code>string logfileName = 2;</code>
        */
       public Builder setLogfileNameBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000002;
+  checkByteStringIsUtf8(value);
+        
         logfileName_ = value;
         onChanged();
         return this;
@@ -2861,47 +3132,37 @@ public final class CanalEntry {
 
       private long logfileOffset_ ;
       /**
-       * <code>optional int64 logfileOffset = 3;</code>
-       *
        * <pre>
        **binlog/redolog 文件的偏移位置*
        * </pre>
-       */
-      public boolean hasLogfileOffset() {
-        return ((bitField0_ & 0x00000004) == 0x00000004);
-      }
-      /**
-       * <code>optional int64 logfileOffset = 3;</code>
        *
-       * <pre>
-       **binlog/redolog 文件的偏移位置*
-       * </pre>
+       * <code>int64 logfileOffset = 3;</code>
        */
       public long getLogfileOffset() {
         return logfileOffset_;
       }
       /**
-       * <code>optional int64 logfileOffset = 3;</code>
-       *
        * <pre>
        **binlog/redolog 文件的偏移位置*
        * </pre>
+       *
+       * <code>int64 logfileOffset = 3;</code>
        */
       public Builder setLogfileOffset(long value) {
-        bitField0_ |= 0x00000004;
+        
         logfileOffset_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int64 logfileOffset = 3;</code>
-       *
        * <pre>
        **binlog/redolog 文件的偏移位置*
        * </pre>
+       *
+       * <code>int64 logfileOffset = 3;</code>
        */
       public Builder clearLogfileOffset() {
-        bitField0_ = (bitField0_ & ~0x00000004);
+        
         logfileOffset_ = 0L;
         onChanged();
         return this;
@@ -2909,98 +3170,76 @@ public final class CanalEntry {
 
       private long serverId_ ;
       /**
-       * <code>optional int64 serverId = 4;</code>
-       *
        * <pre>
        **服务端serverId*
        * </pre>
-       */
-      public boolean hasServerId() {
-        return ((bitField0_ & 0x00000008) == 0x00000008);
-      }
-      /**
-       * <code>optional int64 serverId = 4;</code>
        *
-       * <pre>
-       **服务端serverId*
-       * </pre>
+       * <code>int64 serverId = 4;</code>
        */
       public long getServerId() {
         return serverId_;
       }
       /**
-       * <code>optional int64 serverId = 4;</code>
-       *
        * <pre>
        **服务端serverId*
        * </pre>
+       *
+       * <code>int64 serverId = 4;</code>
        */
       public Builder setServerId(long value) {
-        bitField0_ |= 0x00000008;
+        
         serverId_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int64 serverId = 4;</code>
-       *
        * <pre>
        **服务端serverId*
        * </pre>
+       *
+       * <code>int64 serverId = 4;</code>
        */
       public Builder clearServerId() {
-        bitField0_ = (bitField0_ & ~0x00000008);
+        
         serverId_ = 0L;
         onChanged();
         return this;
       }
 
-      private Object serverenCode_ = "";
+      private java.lang.Object serverenCode_ = "";
       /**
-       * <code>optional string serverenCode = 5;</code>
-       *
        * <pre>
        ** 变更数据的编码 *
        * </pre>
-       */
-      public boolean hasServerenCode() {
-        return ((bitField0_ & 0x00000010) == 0x00000010);
-      }
-      /**
-       * <code>optional string serverenCode = 5;</code>
        *
-       * <pre>
-       ** 变更数据的编码 *
-       * </pre>
+       * <code>string serverenCode = 5;</code>
        */
-      public String getServerenCode() {
-        Object ref = serverenCode_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getServerenCode() {
+        java.lang.Object ref = serverenCode_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            serverenCode_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          serverenCode_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string serverenCode = 5;</code>
-       *
        * <pre>
        ** 变更数据的编码 *
        * </pre>
+       *
+       * <code>string serverenCode = 5;</code>
        */
       public com.google.protobuf.ByteString
           getServerenCodeBytes() {
-        Object ref = serverenCode_;
+        java.lang.Object ref = serverenCode_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           serverenCode_ = b;
           return b;
         } else {
@@ -3008,48 +3247,49 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string serverenCode = 5;</code>
-       *
        * <pre>
        ** 变更数据的编码 *
        * </pre>
+       *
+       * <code>string serverenCode = 5;</code>
        */
       public Builder setServerenCode(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000010;
+  
         serverenCode_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string serverenCode = 5;</code>
-       *
        * <pre>
        ** 变更数据的编码 *
        * </pre>
+       *
+       * <code>string serverenCode = 5;</code>
        */
       public Builder clearServerenCode() {
-        bitField0_ = (bitField0_ & ~0x00000010);
+        
         serverenCode_ = getDefaultInstance().getServerenCode();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string serverenCode = 5;</code>
-       *
        * <pre>
        ** 变更数据的编码 *
        * </pre>
+       *
+       * <code>string serverenCode = 5;</code>
        */
       public Builder setServerenCodeBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000010;
+  checkByteStringIsUtf8(value);
+        
         serverenCode_ = value;
         onChanged();
         return this;
@@ -3057,149 +3297,130 @@ public final class CanalEntry {
 
       private long executeTime_ ;
       /**
-       * <code>optional int64 executeTime = 6;</code>
-       *
        * <pre>
        **变更数据的执行时间 *
        * </pre>
-       */
-      public boolean hasExecuteTime() {
-        return ((bitField0_ & 0x00000020) == 0x00000020);
-      }
-      /**
-       * <code>optional int64 executeTime = 6;</code>
        *
-       * <pre>
-       **变更数据的执行时间 *
-       * </pre>
+       * <code>int64 executeTime = 6;</code>
        */
       public long getExecuteTime() {
         return executeTime_;
       }
       /**
-       * <code>optional int64 executeTime = 6;</code>
-       *
        * <pre>
        **变更数据的执行时间 *
        * </pre>
+       *
+       * <code>int64 executeTime = 6;</code>
        */
       public Builder setExecuteTime(long value) {
-        bitField0_ |= 0x00000020;
+        
         executeTime_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int64 executeTime = 6;</code>
-       *
        * <pre>
        **变更数据的执行时间 *
        * </pre>
+       *
+       * <code>int64 executeTime = 6;</code>
        */
       public Builder clearExecuteTime() {
-        bitField0_ = (bitField0_ & ~0x00000020);
+        
         executeTime_ = 0L;
         onChanged();
         return this;
       }
 
-      private Type sourceType_ = Type.MYSQL;
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Type sourceType = 7 [default = MYSQL];</code>
-       *
-       * <pre>
-       ** 变更数据的来源*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
        */
-      public boolean hasSourceType() {
-        return ((bitField0_ & 0x00000040) == 0x00000040);
+      public int getSourceTypeValue() {
+        if (sourceTypePresentCase_ == 7) {
+          return ((java.lang.Integer) sourceTypePresent_).intValue();
+        }
+        return Type.MYSQL_VALUE;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Type sourceType = 7 [default = MYSQL];</code>
-       *
-       * <pre>
-       ** 变更数据的来源*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
        */
-      public Type getSourceType() {
-        return sourceType_;
+      public Builder setSourceTypeValue(int value) {
+        sourceTypePresentCase_ = 7;
+        sourceTypePresent_ = value;
+        onChanged();
+        return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Type sourceType = 7 [default = MYSQL];</code>
-       *
-       * <pre>
-       ** 变更数据的来源*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
        */
-      public Builder setSourceType(Type value) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Type getSourceType() {
+        if (sourceTypePresentCase_ == 7) {
+          @SuppressWarnings("deprecation")
+          com.alibaba.otter.canal.protocol.CanalEntry.Type result = com.alibaba.otter.canal.protocol.CanalEntry.Type.valueOf(
+              (java.lang.Integer) sourceTypePresent_);
+          return result == null ? com.alibaba.otter.canal.protocol.CanalEntry.Type.UNRECOGNIZED : result;
+        }
+        return com.alibaba.otter.canal.protocol.CanalEntry.Type.TYPECOMPATIBLEPROTO2;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
+       */
+      public Builder setSourceType(com.alibaba.otter.canal.protocol.CanalEntry.Type value) {
         if (value == null) {
           throw new NullPointerException();
         }
-        bitField0_ |= 0x00000040;
-        sourceType_ = value;
+        sourceTypePresentCase_ = 7;
+        sourceTypePresent_ = value.getNumber();
         onChanged();
         return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.Type sourceType = 7 [default = MYSQL];</code>
-       *
-       * <pre>
-       ** 变更数据的来源*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.Type sourceType = 7;</code>
        */
       public Builder clearSourceType() {
-        bitField0_ = (bitField0_ & ~0x00000040);
-        sourceType_ = Type.MYSQL;
-        onChanged();
+        if (sourceTypePresentCase_ == 7) {
+          sourceTypePresentCase_ = 0;
+          sourceTypePresent_ = null;
+          onChanged();
+        }
         return this;
       }
 
-      private Object schemaName_ = "";
+      private java.lang.Object schemaName_ = "";
       /**
-       * <code>optional string schemaName = 8;</code>
-       *
        * <pre>
        ** 变更数据的schemaname*
        * </pre>
-       */
-      public boolean hasSchemaName() {
-        return ((bitField0_ & 0x00000080) == 0x00000080);
-      }
-      /**
-       * <code>optional string schemaName = 8;</code>
        *
-       * <pre>
-       ** 变更数据的schemaname*
-       * </pre>
+       * <code>string schemaName = 8;</code>
        */
-      public String getSchemaName() {
-        Object ref = schemaName_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getSchemaName() {
+        java.lang.Object ref = schemaName_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            schemaName_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          schemaName_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string schemaName = 8;</code>
-       *
        * <pre>
        ** 变更数据的schemaname*
        * </pre>
+       *
+       * <code>string schemaName = 8;</code>
        */
       public com.google.protobuf.ByteString
           getSchemaNameBytes() {
-        Object ref = schemaName_;
+        java.lang.Object ref = schemaName_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           schemaName_ = b;
           return b;
         } else {
@@ -3207,99 +3428,88 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string schemaName = 8;</code>
-       *
        * <pre>
        ** 变更数据的schemaname*
        * </pre>
+       *
+       * <code>string schemaName = 8;</code>
        */
       public Builder setSchemaName(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000080;
+  
         schemaName_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string schemaName = 8;</code>
-       *
        * <pre>
        ** 变更数据的schemaname*
        * </pre>
+       *
+       * <code>string schemaName = 8;</code>
        */
       public Builder clearSchemaName() {
-        bitField0_ = (bitField0_ & ~0x00000080);
+        
         schemaName_ = getDefaultInstance().getSchemaName();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string schemaName = 8;</code>
-       *
        * <pre>
        ** 变更数据的schemaname*
        * </pre>
+       *
+       * <code>string schemaName = 8;</code>
        */
       public Builder setSchemaNameBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000080;
+  checkByteStringIsUtf8(value);
+        
         schemaName_ = value;
         onChanged();
         return this;
       }
 
-      private Object tableName_ = "";
+      private java.lang.Object tableName_ = "";
       /**
-       * <code>optional string tableName = 9;</code>
-       *
        * <pre>
        **变更数据的tablename*
        * </pre>
-       */
-      public boolean hasTableName() {
-        return ((bitField0_ & 0x00000100) == 0x00000100);
-      }
-      /**
-       * <code>optional string tableName = 9;</code>
        *
-       * <pre>
-       **变更数据的tablename*
-       * </pre>
+       * <code>string tableName = 9;</code>
        */
-      public String getTableName() {
-        Object ref = tableName_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getTableName() {
+        java.lang.Object ref = tableName_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            tableName_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          tableName_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string tableName = 9;</code>
-       *
        * <pre>
        **变更数据的tablename*
        * </pre>
+       *
+       * <code>string tableName = 9;</code>
        */
       public com.google.protobuf.ByteString
           getTableNameBytes() {
-        Object ref = tableName_;
+        java.lang.Object ref = tableName_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           tableName_ = b;
           return b;
         } else {
@@ -3307,48 +3517,49 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string tableName = 9;</code>
-       *
        * <pre>
        **变更数据的tablename*
        * </pre>
+       *
+       * <code>string tableName = 9;</code>
        */
       public Builder setTableName(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000100;
+  
         tableName_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string tableName = 9;</code>
-       *
        * <pre>
        **变更数据的tablename*
        * </pre>
+       *
+       * <code>string tableName = 9;</code>
        */
       public Builder clearTableName() {
-        bitField0_ = (bitField0_ & ~0x00000100);
+        
         tableName_ = getDefaultInstance().getTableName();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string tableName = 9;</code>
-       *
        * <pre>
        **变更数据的tablename*
        * </pre>
+       *
+       * <code>string tableName = 9;</code>
        */
       public Builder setTableNameBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000100;
+  checkByteStringIsUtf8(value);
+        
         tableName_ = value;
         onChanged();
         return this;
@@ -3356,123 +3567,116 @@ public final class CanalEntry {
 
       private long eventLength_ ;
       /**
-       * <code>optional int64 eventLength = 10;</code>
-       *
        * <pre>
        **每个event的长度*
        * </pre>
-       */
-      public boolean hasEventLength() {
-        return ((bitField0_ & 0x00000200) == 0x00000200);
-      }
-      /**
-       * <code>optional int64 eventLength = 10;</code>
        *
-       * <pre>
-       **每个event的长度*
-       * </pre>
+       * <code>int64 eventLength = 10;</code>
        */
       public long getEventLength() {
         return eventLength_;
       }
       /**
-       * <code>optional int64 eventLength = 10;</code>
-       *
        * <pre>
        **每个event的长度*
        * </pre>
+       *
+       * <code>int64 eventLength = 10;</code>
        */
       public Builder setEventLength(long value) {
-        bitField0_ |= 0x00000200;
+        
         eventLength_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int64 eventLength = 10;</code>
-       *
        * <pre>
        **每个event的长度*
        * </pre>
+       *
+       * <code>int64 eventLength = 10;</code>
        */
       public Builder clearEventLength() {
-        bitField0_ = (bitField0_ & ~0x00000200);
+        
         eventLength_ = 0L;
         onChanged();
         return this;
       }
 
-      private EventType eventType_ = EventType.UPDATE;
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 11 [default = UPDATE];</code>
-       *
-       * <pre>
-       **数据变更类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
        */
-      public boolean hasEventType() {
-        return ((bitField0_ & 0x00000400) == 0x00000400);
+      public int getEventTypeValue() {
+        if (eventTypePresentCase_ == 11) {
+          return ((java.lang.Integer) eventTypePresent_).intValue();
+        }
+        return EventType.UPDATE_VALUE;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 11 [default = UPDATE];</code>
-       *
-       * <pre>
-       **数据变更类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
        */
-      public EventType getEventType() {
-        return eventType_;
+      public Builder setEventTypeValue(int value) {
+        eventTypePresentCase_ = 11;
+        eventTypePresent_ = value;
+        onChanged();
+        return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 11 [default = UPDATE];</code>
-       *
-       * <pre>
-       **数据变更类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
        */
-      public Builder setEventType(EventType value) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.EventType getEventType() {
+        if (eventTypePresentCase_ == 11) {
+          @SuppressWarnings("deprecation")
+          com.alibaba.otter.canal.protocol.CanalEntry.EventType result = com.alibaba.otter.canal.protocol.CanalEntry.EventType.valueOf(
+              (java.lang.Integer) eventTypePresent_);
+          return result == null ? com.alibaba.otter.canal.protocol.CanalEntry.EventType.UNRECOGNIZED : result;
+        }
+        return com.alibaba.otter.canal.protocol.CanalEntry.EventType.EVENTTYPECOMPATIBLEPROTO2;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
+       */
+      public Builder setEventType(com.alibaba.otter.canal.protocol.CanalEntry.EventType value) {
         if (value == null) {
           throw new NullPointerException();
         }
-        bitField0_ |= 0x00000400;
-        eventType_ = value;
+        eventTypePresentCase_ = 11;
+        eventTypePresent_ = value.getNumber();
         onChanged();
         return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 11 [default = UPDATE];</code>
-       *
-       * <pre>
-       **数据变更类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 11;</code>
        */
       public Builder clearEventType() {
-        bitField0_ = (bitField0_ & ~0x00000400);
-        eventType_ = EventType.UPDATE;
-        onChanged();
+        if (eventTypePresentCase_ == 11) {
+          eventTypePresentCase_ = 0;
+          eventTypePresent_ = null;
+          onChanged();
+        }
         return this;
       }
 
-      private java.util.List<Pair> props_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_ =
         java.util.Collections.emptyList();
       private void ensurePropsIsMutable() {
         if (!((bitField0_ & 0x00000800) == 0x00000800)) {
-          props_ = new java.util.ArrayList<Pair>(props_);
+          props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>(props_);
           bitField0_ |= 0x00000800;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder> propsBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> propsBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public java.util.List<Pair> getPropsList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
         if (propsBuilder_ == null) {
           return java.util.Collections.unmodifiableList(props_);
         } else {
@@ -3480,11 +3684,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public int getPropsCount() {
         if (propsBuilder_ == null) {
@@ -3494,13 +3698,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public Pair getProps(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);
         } else {
@@ -3508,14 +3712,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public Builder setProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -3529,14 +3733,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public Builder setProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.set(index, builderForValue.build());
@@ -3547,13 +3751,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public Builder addProps(Pair value) {
+      public Builder addProps(com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -3567,14 +3771,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public Builder addProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -3588,14 +3792,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public Builder addProps(
-          Pair.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(builderForValue.build());
@@ -3606,14 +3810,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public Builder addProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(index, builderForValue.build());
@@ -3624,14 +3828,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public Builder addAllProps(
-          Iterable<? extends Pair> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.Pair> values) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -3643,11 +3847,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public Builder clearProps() {
         if (propsBuilder_ == null) {
@@ -3660,11 +3864,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
       public Builder removeProps(int index) {
         if (propsBuilder_ == null) {
@@ -3677,24 +3881,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public Pair.Builder getPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder getPropsBuilder(
           int index) {
         return getPropsFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public PairOrBuilder getPropsOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
           int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);  } else {
@@ -3702,13 +3906,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public java.util.List<? extends PairOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
            getPropsOrBuilderList() {
         if (propsBuilder_ != null) {
           return propsBuilder_.getMessageOrBuilderList();
@@ -3717,45 +3921,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public Pair.Builder addPropsBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder() {
         return getPropsFieldBuilder().addBuilder(
-            Pair.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public Pair.Builder addPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder(
           int index) {
         return getPropsFieldBuilder().addBuilder(
-            index, Pair.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 12;</code>
        */
-      public java.util.List<Pair.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder> 
            getPropsBuilderList() {
         return getPropsFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
           getPropsFieldBuilder() {
         if (propsBuilder_ == null) {
-          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              Pair, Pair.Builder, PairOrBuilder>(
+          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder>(
                   props_,
                   ((bitField0_ & 0x00000800) == 0x00000800),
                   getParentForChildren(),
@@ -3765,52 +3969,40 @@ public final class CanalEntry {
         return propsBuilder_;
       }
 
-      private Object gtid_ = "";
+      private java.lang.Object gtid_ = "";
       /**
-       * <code>optional string gtid = 13;</code>
-       *
        * <pre>
        **当前事务的gitd*
        * </pre>
-       */
-      public boolean hasGtid() {
-        return ((bitField0_ & 0x00001000) == 0x00001000);
-      }
-      /**
-       * <code>optional string gtid = 13;</code>
        *
-       * <pre>
-       **当前事务的gitd*
-       * </pre>
+       * <code>string gtid = 13;</code>
        */
-      public String getGtid() {
-        Object ref = gtid_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getGtid() {
+        java.lang.Object ref = gtid_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            gtid_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          gtid_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string gtid = 13;</code>
-       *
        * <pre>
        **当前事务的gitd*
        * </pre>
+       *
+       * <code>string gtid = 13;</code>
        */
       public com.google.protobuf.ByteString
           getGtidBytes() {
-        Object ref = gtid_;
+        java.lang.Object ref = gtid_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           gtid_ = b;
           return b;
         } else {
@@ -3818,62 +4010,104 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string gtid = 13;</code>
-       *
        * <pre>
        **当前事务的gitd*
        * </pre>
+       *
+       * <code>string gtid = 13;</code>
        */
       public Builder setGtid(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00001000;
+  
         gtid_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string gtid = 13;</code>
-       *
        * <pre>
        **当前事务的gitd*
        * </pre>
+       *
+       * <code>string gtid = 13;</code>
        */
       public Builder clearGtid() {
-        bitField0_ = (bitField0_ & ~0x00001000);
+        
         gtid_ = getDefaultInstance().getGtid();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string gtid = 13;</code>
-       *
        * <pre>
        **当前事务的gitd*
        * </pre>
+       *
+       * <code>string gtid = 13;</code>
        */
       public Builder setGtidBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00001000;
+  checkByteStringIsUtf8(value);
+        
         gtid_ = value;
         onChanged();
         return this;
       }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
 
       // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Header)
     }
 
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Header)
+    private static final com.alibaba.otter.canal.protocol.CanalEntry.Header DEFAULT_INSTANCE;
     static {
-      defaultInstance = new Header(true);
-      defaultInstance.initFields();
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalEntry.Header();
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Header getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Header>
+        PARSER = new com.google.protobuf.AbstractParser<Header>() {
+      @java.lang.Override
+      public Header parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Header(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Header> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Header> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalEntry.Header getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Header)
   }
 
   public interface ColumnOrBuilder extends
@@ -3881,266 +4115,196 @@ public final class CanalEntry {
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>optional int32 index = 1;</code>
-     *
      * <pre>
      **字段下标*
      * </pre>
-     */
-    boolean hasIndex();
-    /**
-     * <code>optional int32 index = 1;</code>
      *
-     * <pre>
-     **字段下标*
-     * </pre>
+     * <code>int32 index = 1;</code>
      */
     int getIndex();
 
     /**
-     * <code>optional int32 sqlType = 2;</code>
-     *
      * <pre>
      **字段java中类型*
      * </pre>
-     */
-    boolean hasSqlType();
-    /**
-     * <code>optional int32 sqlType = 2;</code>
      *
-     * <pre>
-     **字段java中类型*
-     * </pre>
+     * <code>int32 sqlType = 2;</code>
      */
     int getSqlType();
 
     /**
-     * <code>optional string name = 3;</code>
-     *
      * <pre>
      **字段名称(忽略大小写)，在mysql中是没有的*
      * </pre>
+     *
+     * <code>string name = 3;</code>
      */
-    boolean hasName();
+    java.lang.String getName();
     /**
-     * <code>optional string name = 3;</code>
-     *
      * <pre>
      **字段名称(忽略大小写)，在mysql中是没有的*
      * </pre>
-     */
-    String getName();
-    /**
-     * <code>optional string name = 3;</code>
      *
-     * <pre>
-     **字段名称(忽略大小写)，在mysql中是没有的*
-     * </pre>
+     * <code>string name = 3;</code>
      */
     com.google.protobuf.ByteString
         getNameBytes();
 
     /**
-     * <code>optional bool isKey = 4;</code>
-     *
      * <pre>
      **是否是主键*
      * </pre>
-     */
-    boolean hasIsKey();
-    /**
-     * <code>optional bool isKey = 4;</code>
      *
-     * <pre>
-     **是否是主键*
-     * </pre>
+     * <code>bool isKey = 4;</code>
      */
     boolean getIsKey();
 
     /**
-     * <code>optional bool updated = 5;</code>
-     *
      * <pre>
      **如果EventType=UPDATE,用于标识这个字段值是否有修改*
      * </pre>
-     */
-    boolean hasUpdated();
-    /**
-     * <code>optional bool updated = 5;</code>
      *
-     * <pre>
-     **如果EventType=UPDATE,用于标识这个字段值是否有修改*
-     * </pre>
+     * <code>bool updated = 5;</code>
      */
     boolean getUpdated();
 
     /**
-     * <code>optional bool isNull = 6 [default = false];</code>
-     *
-     * <pre>
-     ** 标识是否为空  *
-     * </pre>
-     */
-    boolean hasIsNull();
-    /**
-     * <code>optional bool isNull = 6 [default = false];</code>
-     *
-     * <pre>
-     ** 标识是否为空  *
-     * </pre>
+     * <code>bool isNull = 6;</code>
      */
     boolean getIsNull();
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
-    java.util.List<Pair>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> 
         getPropsList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
-    Pair getProps(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
     int getPropsCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
-    java.util.List<? extends PairOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
-    PairOrBuilder getPropsOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
+        int index);
 
     /**
-     * <code>optional string value = 8;</code>
-     *
      * <pre>
      ** 字段值,timestamp,Datetime是一个时间格式的文本 *
      * </pre>
+     *
+     * <code>string value = 8;</code>
      */
-    boolean hasValue();
+    java.lang.String getValue();
     /**
-     * <code>optional string value = 8;</code>
-     *
      * <pre>
      ** 字段值,timestamp,Datetime是一个时间格式的文本 *
      * </pre>
-     */
-    String getValue();
-    /**
-     * <code>optional string value = 8;</code>
      *
-     * <pre>
-     ** 字段值,timestamp,Datetime是一个时间格式的文本 *
-     * </pre>
+     * <code>string value = 8;</code>
      */
     com.google.protobuf.ByteString
         getValueBytes();
 
     /**
-     * <code>optional int32 length = 9;</code>
-     *
      * <pre>
      ** 对应数据对象原始长度 *
      * </pre>
-     */
-    boolean hasLength();
-    /**
-     * <code>optional int32 length = 9;</code>
      *
-     * <pre>
-     ** 对应数据对象原始长度 *
-     * </pre>
+     * <code>int32 length = 9;</code>
      */
     int getLength();
 
     /**
-     * <code>optional string mysqlType = 10;</code>
-     *
      * <pre>
      **字段mysql类型*
      * </pre>
+     *
+     * <code>string mysqlType = 10;</code>
      */
-    boolean hasMysqlType();
+    java.lang.String getMysqlType();
     /**
-     * <code>optional string mysqlType = 10;</code>
-     *
      * <pre>
      **字段mysql类型*
      * </pre>
-     */
-    String getMysqlType();
-    /**
-     * <code>optional string mysqlType = 10;</code>
      *
-     * <pre>
-     **字段mysql类型*
-     * </pre>
+     * <code>string mysqlType = 10;</code>
      */
     com.google.protobuf.ByteString
         getMysqlTypeBytes();
+
+    public com.alibaba.otter.canal.protocol.CanalEntry.Column.IsNullPresentCase getIsNullPresentCase();
   }
   /**
-   * Protobuf type {@code com.alibaba.otter.canal.protocol.Column}
-   *
    * <pre>
    **每个字段的数据结构*
    * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Column}
    */
-  public static final class Column extends
-      com.google.protobuf.GeneratedMessage implements
+  public  static final class Column extends
+      com.google.protobuf.GeneratedMessageV3 implements
       // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Column)
       ColumnOrBuilder {
+  private static final long serialVersionUID = 0L;
     // Use Column.newBuilder() to construct.
-    private Column(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    private Column(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
-      this.unknownFields = builder.getUnknownFields();
     }
-    private Column(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final Column defaultInstance;
-    public static Column getDefaultInstance() {
-      return defaultInstance;
+    private Column() {
+      index_ = 0;
+      sqlType_ = 0;
+      name_ = "";
+      isKey_ = false;
+      updated_ = false;
+      props_ = java.util.Collections.emptyList();
+      value_ = "";
+      length_ = 0;
+      mysqlType_ = "";
     }
 
-    public Column getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @Override
+    @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
+    getUnknownFields() {
       return this.unknownFields;
     }
     private Column(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
       int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
@@ -4152,67 +4316,68 @@ public final class CanalEntry {
             case 0:
               done = true;
               break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
             case 8: {
-              bitField0_ |= 0x00000001;
+
               index_ = input.readInt32();
               break;
             }
             case 16: {
-              bitField0_ |= 0x00000002;
+
               sqlType_ = input.readInt32();
               break;
             }
             case 26: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000004;
-              name_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              name_ = s;
               break;
             }
             case 32: {
-              bitField0_ |= 0x00000008;
+
               isKey_ = input.readBool();
               break;
             }
             case 40: {
-              bitField0_ |= 0x00000010;
+
               updated_ = input.readBool();
               break;
             }
             case 48: {
-              bitField0_ |= 0x00000020;
-              isNull_ = input.readBool();
+              isNullPresentCase_ = 6;
+              isNullPresent_ = input.readBool();
               break;
             }
             case 58: {
               if (!((mutable_bitField0_ & 0x00000040) == 0x00000040)) {
-                props_ = new java.util.ArrayList<Pair>();
+                props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>();
                 mutable_bitField0_ |= 0x00000040;
               }
-              props_.add(input.readMessage(Pair.PARSER, extensionRegistry));
+              props_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Pair.parser(), extensionRegistry));
               break;
             }
             case 66: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000040;
-              value_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              value_ = s;
               break;
             }
             case 72: {
-              bitField0_ |= 0x00000080;
+
               length_ = input.readInt32();
               break;
             }
             case 82: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000100;
-              mysqlType_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              mysqlType_ = s;
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
               break;
             }
           }
@@ -4221,7 +4386,7 @@ public final class CanalEntry {
         throw e.setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
+            e).setUnfinishedMessage(this);
       } finally {
         if (((mutable_bitField0_ & 0x00000040) == 0x00000040)) {
           props_ = java.util.Collections.unmodifiableList(props_);
@@ -4232,50 +4397,62 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_descriptor;
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_descriptor;
     }
 
-    protected FieldAccessorTable
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_fieldAccessorTable
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              Column.class, Builder.class);
-    }
-
-    public static com.google.protobuf.Parser<Column> PARSER =
-        new com.google.protobuf.AbstractParser<Column>() {
-      public Column parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new Column(input, extensionRegistry);
-      }
-    };
-
-    @Override
-    public com.google.protobuf.Parser<Column> getParserForType() {
-      return PARSER;
+              com.alibaba.otter.canal.protocol.CanalEntry.Column.class, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder.class);
     }
 
     private int bitField0_;
+    private int isNullPresentCase_ = 0;
+    private java.lang.Object isNullPresent_;
+    public enum IsNullPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      ISNULL(6),
+      ISNULLPRESENT_NOT_SET(0);
+      private final int value;
+      private IsNullPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static IsNullPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static IsNullPresentCase forNumber(int value) {
+        switch (value) {
+          case 6: return ISNULL;
+          case 0: return ISNULLPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public IsNullPresentCase
+    getIsNullPresentCase() {
+      return IsNullPresentCase.forNumber(
+          isNullPresentCase_);
+    }
+
     public static final int INDEX_FIELD_NUMBER = 1;
     private int index_;
     /**
-     * <code>optional int32 index = 1;</code>
-     *
      * <pre>
      **字段下标*
      * </pre>
-     */
-    public boolean hasIndex() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
-    }
-    /**
-     * <code>optional int32 index = 1;</code>
      *
-     * <pre>
-     **字段下标*
-     * </pre>
+     * <code>int32 index = 1;</code>
      */
     public int getIndex() {
       return index_;
@@ -4284,73 +4461,51 @@ public final class CanalEntry {
     public static final int SQLTYPE_FIELD_NUMBER = 2;
     private int sqlType_;
     /**
-     * <code>optional int32 sqlType = 2;</code>
-     *
      * <pre>
      **字段java中类型*
      * </pre>
-     */
-    public boolean hasSqlType() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
-    }
-    /**
-     * <code>optional int32 sqlType = 2;</code>
      *
-     * <pre>
-     **字段java中类型*
-     * </pre>
+     * <code>int32 sqlType = 2;</code>
      */
     public int getSqlType() {
       return sqlType_;
     }
 
     public static final int NAME_FIELD_NUMBER = 3;
-    private Object name_;
+    private volatile java.lang.Object name_;
     /**
-     * <code>optional string name = 3;</code>
-     *
      * <pre>
      **字段名称(忽略大小写)，在mysql中是没有的*
      * </pre>
-     */
-    public boolean hasName() {
-      return ((bitField0_ & 0x00000004) == 0x00000004);
-    }
-    /**
-     * <code>optional string name = 3;</code>
      *
-     * <pre>
-     **字段名称(忽略大小写)，在mysql中是没有的*
-     * </pre>
+     * <code>string name = 3;</code>
      */
-    public String getName() {
-      Object ref = name_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getName() {
+      java.lang.Object ref = name_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          name_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        name_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string name = 3;</code>
-     *
      * <pre>
      **字段名称(忽略大小写)，在mysql中是没有的*
      * </pre>
+     *
+     * <code>string name = 3;</code>
      */
     public com.google.protobuf.ByteString
         getNameBytes() {
-      Object ref = name_;
-      if (ref instanceof String) {
+      java.lang.Object ref = name_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         name_ = b;
         return b;
       } else {
@@ -4361,21 +4516,11 @@ public final class CanalEntry {
     public static final int ISKEY_FIELD_NUMBER = 4;
     private boolean isKey_;
     /**
-     * <code>optional bool isKey = 4;</code>
-     *
      * <pre>
      **是否是主键*
      * </pre>
-     */
-    public boolean hasIsKey() {
-      return ((bitField0_ & 0x00000008) == 0x00000008);
-    }
-    /**
-     * <code>optional bool isKey = 4;</code>
      *
-     * <pre>
-     **是否是主键*
-     * </pre>
+     * <code>bool isKey = 4;</code>
      */
     public boolean getIsKey() {
       return isKey_;
@@ -4384,151 +4529,117 @@ public final class CanalEntry {
     public static final int UPDATED_FIELD_NUMBER = 5;
     private boolean updated_;
     /**
-     * <code>optional bool updated = 5;</code>
-     *
      * <pre>
      **如果EventType=UPDATE,用于标识这个字段值是否有修改*
      * </pre>
-     */
-    public boolean hasUpdated() {
-      return ((bitField0_ & 0x00000010) == 0x00000010);
-    }
-    /**
-     * <code>optional bool updated = 5;</code>
      *
-     * <pre>
-     **如果EventType=UPDATE,用于标识这个字段值是否有修改*
-     * </pre>
+     * <code>bool updated = 5;</code>
      */
     public boolean getUpdated() {
       return updated_;
     }
 
     public static final int ISNULL_FIELD_NUMBER = 6;
-    private boolean isNull_;
     /**
-     * <code>optional bool isNull = 6 [default = false];</code>
-     *
-     * <pre>
-     ** 标识是否为空  *
-     * </pre>
-     */
-    public boolean hasIsNull() {
-      return ((bitField0_ & 0x00000020) == 0x00000020);
-    }
-    /**
-     * <code>optional bool isNull = 6 [default = false];</code>
-     *
-     * <pre>
-     ** 标识是否为空  *
-     * </pre>
+     * <code>bool isNull = 6;</code>
      */
     public boolean getIsNull() {
-      return isNull_;
+      if (isNullPresentCase_ == 6) {
+        return (java.lang.Boolean) isNullPresent_;
+      }
+      return false;
     }
 
     public static final int PROPS_FIELD_NUMBER = 7;
-    private java.util.List<Pair> props_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
-    public java.util.List<Pair> getPropsList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
-    public java.util.List<? extends PairOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
     public int getPropsCount() {
       return props_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
-    public Pair getProps(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
       return props_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
      */
-    public PairOrBuilder getPropsOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
         int index) {
       return props_.get(index);
     }
 
     public static final int VALUE_FIELD_NUMBER = 8;
-    private Object value_;
+    private volatile java.lang.Object value_;
     /**
-     * <code>optional string value = 8;</code>
-     *
      * <pre>
      ** 字段值,timestamp,Datetime是一个时间格式的文本 *
      * </pre>
-     */
-    public boolean hasValue() {
-      return ((bitField0_ & 0x00000040) == 0x00000040);
-    }
-    /**
-     * <code>optional string value = 8;</code>
      *
-     * <pre>
-     ** 字段值,timestamp,Datetime是一个时间格式的文本 *
-     * </pre>
+     * <code>string value = 8;</code>
      */
-    public String getValue() {
-      Object ref = value_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getValue() {
+      java.lang.Object ref = value_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          value_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        value_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string value = 8;</code>
-     *
      * <pre>
      ** 字段值,timestamp,Datetime是一个时间格式的文本 *
      * </pre>
+     *
+     * <code>string value = 8;</code>
      */
     public com.google.protobuf.ByteString
         getValueBytes() {
-      Object ref = value_;
-      if (ref instanceof String) {
+      java.lang.Object ref = value_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         value_ = b;
         return b;
       } else {
@@ -4539,73 +4650,51 @@ public final class CanalEntry {
     public static final int LENGTH_FIELD_NUMBER = 9;
     private int length_;
     /**
-     * <code>optional int32 length = 9;</code>
-     *
      * <pre>
      ** 对应数据对象原始长度 *
      * </pre>
-     */
-    public boolean hasLength() {
-      return ((bitField0_ & 0x00000080) == 0x00000080);
-    }
-    /**
-     * <code>optional int32 length = 9;</code>
      *
-     * <pre>
-     ** 对应数据对象原始长度 *
-     * </pre>
+     * <code>int32 length = 9;</code>
      */
     public int getLength() {
       return length_;
     }
 
     public static final int MYSQLTYPE_FIELD_NUMBER = 10;
-    private Object mysqlType_;
+    private volatile java.lang.Object mysqlType_;
     /**
-     * <code>optional string mysqlType = 10;</code>
-     *
      * <pre>
      **字段mysql类型*
      * </pre>
-     */
-    public boolean hasMysqlType() {
-      return ((bitField0_ & 0x00000100) == 0x00000100);
-    }
-    /**
-     * <code>optional string mysqlType = 10;</code>
      *
-     * <pre>
-     **字段mysql类型*
-     * </pre>
+     * <code>string mysqlType = 10;</code>
      */
-    public String getMysqlType() {
-      Object ref = mysqlType_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getMysqlType() {
+      java.lang.Object ref = mysqlType_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          mysqlType_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        mysqlType_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string mysqlType = 10;</code>
-     *
      * <pre>
      **字段mysql类型*
      * </pre>
+     *
+     * <code>string mysqlType = 10;</code>
      */
     public com.google.protobuf.ByteString
         getMysqlTypeBytes() {
-      Object ref = mysqlType_;
-      if (ref instanceof String) {
+      java.lang.Object ref = mysqlType_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         mysqlType_ = b;
         return b;
       } else {
@@ -4613,19 +4702,8 @@ public final class CanalEntry {
       }
     }
 
-    private void initFields() {
-      index_ = 0;
-      sqlType_ = 0;
-      name_ = "";
-      isKey_ = false;
-      updated_ = false;
-      isNull_ = false;
-      props_ = java.util.Collections.emptyList();
-      value_ = "";
-      length_ = 0;
-      mysqlType_ = "";
-    }
     private byte memoizedIsInitialized = -1;
+    @java.lang.Override
     public final boolean isInitialized() {
       byte isInitialized = memoizedIsInitialized;
       if (isInitialized == 1) return true;
@@ -4635,187 +4713,291 @@ public final class CanalEntry {
       return true;
     }
 
+    @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (index_ != 0) {
         output.writeInt32(1, index_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+      if (sqlType_ != 0) {
         output.writeInt32(2, sqlType_);
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        output.writeBytes(3, getNameBytes());
+      if (!getNameBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 3, name_);
       }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
+      if (isKey_ != false) {
         output.writeBool(4, isKey_);
       }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
+      if (updated_ != false) {
         output.writeBool(5, updated_);
       }
-      if (((bitField0_ & 0x00000020) == 0x00000020)) {
-        output.writeBool(6, isNull_);
+      if (isNullPresentCase_ == 6) {
+        output.writeBool(
+            6, (boolean)((java.lang.Boolean) isNullPresent_));
       }
       for (int i = 0; i < props_.size(); i++) {
         output.writeMessage(7, props_.get(i));
       }
-      if (((bitField0_ & 0x00000040) == 0x00000040)) {
-        output.writeBytes(8, getValueBytes());
+      if (!getValueBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 8, value_);
       }
-      if (((bitField0_ & 0x00000080) == 0x00000080)) {
+      if (length_ != 0) {
         output.writeInt32(9, length_);
       }
-      if (((bitField0_ & 0x00000100) == 0x00000100)) {
-        output.writeBytes(10, getMysqlTypeBytes());
+      if (!getMysqlTypeBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 10, mysqlType_);
       }
-      getUnknownFields().writeTo(output);
+      unknownFields.writeTo(output);
     }
 
-    private int memoizedSerializedSize = -1;
+    @java.lang.Override
     public int getSerializedSize() {
-      int size = memoizedSerializedSize;
+      int size = memoizedSize;
       if (size != -1) return size;
 
       size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (index_ != 0) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt32Size(1, index_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+      if (sqlType_ != 0) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt32Size(2, sqlType_);
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(3, getNameBytes());
+      if (!getNameBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, name_);
       }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
+      if (isKey_ != false) {
         size += com.google.protobuf.CodedOutputStream
           .computeBoolSize(4, isKey_);
       }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
+      if (updated_ != false) {
         size += com.google.protobuf.CodedOutputStream
           .computeBoolSize(5, updated_);
       }
-      if (((bitField0_ & 0x00000020) == 0x00000020)) {
+      if (isNullPresentCase_ == 6) {
         size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(6, isNull_);
+          .computeBoolSize(
+              6, (boolean)((java.lang.Boolean) isNullPresent_));
       }
       for (int i = 0; i < props_.size(); i++) {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(7, props_.get(i));
       }
-      if (((bitField0_ & 0x00000040) == 0x00000040)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(8, getValueBytes());
+      if (!getValueBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, value_);
       }
-      if (((bitField0_ & 0x00000080) == 0x00000080)) {
+      if (length_ != 0) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt32Size(9, length_);
       }
-      if (((bitField0_ & 0x00000100) == 0x00000100)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(10, getMysqlTypeBytes());
+      if (!getMysqlTypeBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(10, mysqlType_);
       }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
       return size;
     }
 
-    private static final long serialVersionUID = 0L;
-    @Override
-    protected Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalEntry.Column)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalEntry.Column other = (com.alibaba.otter.canal.protocol.CanalEntry.Column) obj;
+
+      boolean result = true;
+      result = result && (getIndex()
+          == other.getIndex());
+      result = result && (getSqlType()
+          == other.getSqlType());
+      result = result && getName()
+          .equals(other.getName());
+      result = result && (getIsKey()
+          == other.getIsKey());
+      result = result && (getUpdated()
+          == other.getUpdated());
+      result = result && getPropsList()
+          .equals(other.getPropsList());
+      result = result && getValue()
+          .equals(other.getValue());
+      result = result && (getLength()
+          == other.getLength());
+      result = result && getMysqlType()
+          .equals(other.getMysqlType());
+      result = result && getIsNullPresentCase().equals(
+          other.getIsNullPresentCase());
+      if (!result) return false;
+      switch (isNullPresentCase_) {
+        case 6:
+          result = result && (getIsNull()
+              == other.getIsNull());
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
     }
 
-    public static Column parseFrom(
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + INDEX_FIELD_NUMBER;
+      hash = (53 * hash) + getIndex();
+      hash = (37 * hash) + SQLTYPE_FIELD_NUMBER;
+      hash = (53 * hash) + getSqlType();
+      hash = (37 * hash) + NAME_FIELD_NUMBER;
+      hash = (53 * hash) + getName().hashCode();
+      hash = (37 * hash) + ISKEY_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
+          getIsKey());
+      hash = (37 * hash) + UPDATED_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
+          getUpdated());
+      if (getPropsCount() > 0) {
+        hash = (37 * hash) + PROPS_FIELD_NUMBER;
+        hash = (53 * hash) + getPropsList().hashCode();
+      }
+      hash = (37 * hash) + VALUE_FIELD_NUMBER;
+      hash = (53 * hash) + getValue().hashCode();
+      hash = (37 * hash) + LENGTH_FIELD_NUMBER;
+      hash = (53 * hash) + getLength();
+      hash = (37 * hash) + MYSQLTYPE_FIELD_NUMBER;
+      hash = (53 * hash) + getMysqlType().hashCode();
+      switch (isNullPresentCase_) {
+        case 6:
+          hash = (37 * hash) + ISNULL_FIELD_NUMBER;
+          hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
+              getIsNull());
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static Column parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static Column parseFrom(byte[] data)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static Column parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static Column parseFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static Column parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static Column parseDelimitedFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
     }
-    public static Column parseDelimitedFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static Column parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static Column parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
-    public static Builder newBuilder() { return Builder.create(); }
+    @java.lang.Override
     public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(Column prototype) {
-      return newBuilder().mergeFrom(prototype);
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalEntry.Column prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
     }
-    public Builder toBuilder() { return newBuilder(this); }
 
-    @Override
+    @java.lang.Override
     protected Builder newBuilderForType(
-        BuilderParent parent) {
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Column}
-     *
      * <pre>
      **每个字段的数据结构*
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Column}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Column)
-        ColumnOrBuilder {
+        com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_descriptor;
       }
 
-      protected FieldAccessorTable
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_fieldAccessorTable
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                Column.class, Builder.class);
+                com.alibaba.otter.canal.protocol.CanalEntry.Column.class, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder.class);
       }
 
       // Construct using com.alibaba.otter.canal.protocol.CanalEntry.Column.newBuilder()
@@ -4824,33 +5006,29 @@ public final class CanalEntry {
       }
 
       private Builder(
-          BuilderParent parent) {
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
         super(parent);
         maybeForceBuilderInitialization();
       }
       private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
           getPropsFieldBuilder();
         }
       }
-      private static Builder create() {
-        return new Builder();
-      }
-
+      @java.lang.Override
       public Builder clear() {
         super.clear();
         index_ = 0;
-        bitField0_ = (bitField0_ & ~0x00000001);
+
         sqlType_ = 0;
-        bitField0_ = (bitField0_ & ~0x00000002);
+
         name_ = "";
-        bitField0_ = (bitField0_ & ~0x00000004);
+
         isKey_ = false;
-        bitField0_ = (bitField0_ & ~0x00000008);
+
         updated_ = false;
-        bitField0_ = (bitField0_ & ~0x00000010);
-        isNull_ = false;
-        bitField0_ = (bitField0_ & ~0x00000020);
+
         if (propsBuilder_ == null) {
           props_ = java.util.Collections.emptyList();
           bitField0_ = (bitField0_ & ~0x00000040);
@@ -4858,63 +5036,49 @@ public final class CanalEntry {
           propsBuilder_.clear();
         }
         value_ = "";
-        bitField0_ = (bitField0_ & ~0x00000080);
+
         length_ = 0;
-        bitField0_ = (bitField0_ & ~0x00000100);
+
         mysqlType_ = "";
-        bitField0_ = (bitField0_ & ~0x00000200);
+
+        isNullPresentCase_ = 0;
+        isNullPresent_ = null;
         return this;
       }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
+      @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Column_descriptor;
       }
 
-      public Column getDefaultInstanceForType() {
-        return Column.getDefaultInstance();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalEntry.Column.getDefaultInstance();
       }
 
-      public Column build() {
-        Column result = buildPartial();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column build() {
+        com.alibaba.otter.canal.protocol.CanalEntry.Column result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
         return result;
       }
 
-      public Column buildPartial() {
-        Column result = new Column(this);
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalEntry.Column result = new com.alibaba.otter.canal.protocol.CanalEntry.Column(this);
         int from_bitField0_ = bitField0_;
         int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
-        }
         result.index_ = index_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
-        }
         result.sqlType_ = sqlType_;
-        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-          to_bitField0_ |= 0x00000004;
-        }
         result.name_ = name_;
-        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-          to_bitField0_ |= 0x00000008;
-        }
         result.isKey_ = isKey_;
-        if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
-          to_bitField0_ |= 0x00000010;
-        }
         result.updated_ = updated_;
-        if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
-          to_bitField0_ |= 0x00000020;
+        if (isNullPresentCase_ == 6) {
+          result.isNullPresent_ = isNullPresent_;
         }
-        result.isNull_ = isNull_;
         if (propsBuilder_ == null) {
           if (((bitField0_ & 0x00000040) == 0x00000040)) {
             props_ = java.util.Collections.unmodifiableList(props_);
@@ -4924,54 +5088,75 @@ public final class CanalEntry {
         } else {
           result.props_ = propsBuilder_.build();
         }
-        if (((from_bitField0_ & 0x00000080) == 0x00000080)) {
-          to_bitField0_ |= 0x00000040;
-        }
         result.value_ = value_;
-        if (((from_bitField0_ & 0x00000100) == 0x00000100)) {
-          to_bitField0_ |= 0x00000080;
-        }
         result.length_ = length_;
-        if (((from_bitField0_ & 0x00000200) == 0x00000200)) {
-          to_bitField0_ |= 0x00000100;
-        }
         result.mysqlType_ = mysqlType_;
         result.bitField0_ = to_bitField0_;
+        result.isNullPresentCase_ = isNullPresentCase_;
         onBuilt();
         return result;
       }
 
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof Column) {
-          return mergeFrom((Column)other);
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalEntry.Column) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalEntry.Column)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(Column other) {
-        if (other == Column.getDefaultInstance()) return this;
-        if (other.hasIndex()) {
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalEntry.Column other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalEntry.Column.getDefaultInstance()) return this;
+        if (other.getIndex() != 0) {
           setIndex(other.getIndex());
         }
-        if (other.hasSqlType()) {
+        if (other.getSqlType() != 0) {
           setSqlType(other.getSqlType());
         }
-        if (other.hasName()) {
-          bitField0_ |= 0x00000004;
+        if (!other.getName().isEmpty()) {
           name_ = other.name_;
           onChanged();
         }
-        if (other.hasIsKey()) {
+        if (other.getIsKey() != false) {
           setIsKey(other.getIsKey());
         }
-        if (other.hasUpdated()) {
+        if (other.getUpdated() != false) {
           setUpdated(other.getUpdated());
         }
-        if (other.hasIsNull()) {
-          setIsNull(other.getIsNull());
-        }
         if (propsBuilder_ == null) {
           if (!other.props_.isEmpty()) {
             if (props_.isEmpty()) {
@@ -4991,44 +5176,54 @@ public final class CanalEntry {
               props_ = other.props_;
               bitField0_ = (bitField0_ & ~0x00000040);
               propsBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getPropsFieldBuilder() : null;
             } else {
               propsBuilder_.addAllMessages(other.props_);
             }
           }
         }
-        if (other.hasValue()) {
-          bitField0_ |= 0x00000080;
+        if (!other.getValue().isEmpty()) {
           value_ = other.value_;
           onChanged();
         }
-        if (other.hasLength()) {
+        if (other.getLength() != 0) {
           setLength(other.getLength());
         }
-        if (other.hasMysqlType()) {
-          bitField0_ |= 0x00000200;
+        if (!other.getMysqlType().isEmpty()) {
           mysqlType_ = other.mysqlType_;
           onChanged();
         }
-        this.mergeUnknownFields(other.getUnknownFields());
+        switch (other.getIsNullPresentCase()) {
+          case ISNULL: {
+            setIsNull(other.getIsNull());
+            break;
+          }
+          case ISNULLPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
         return this;
       }
 
+      @java.lang.Override
       public final boolean isInitialized() {
         return true;
       }
 
+      @java.lang.Override
       public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        Column parsedMessage = null;
+        com.alibaba.otter.canal.protocol.CanalEntry.Column parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (Column) e.getUnfinishedMessage();
-          throw e;
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalEntry.Column) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
             mergeFrom(parsedMessage);
@@ -5036,51 +5231,56 @@ public final class CanalEntry {
         }
         return this;
       }
+      private int isNullPresentCase_ = 0;
+      private java.lang.Object isNullPresent_;
+      public IsNullPresentCase
+          getIsNullPresentCase() {
+        return IsNullPresentCase.forNumber(
+            isNullPresentCase_);
+      }
+
+      public Builder clearIsNullPresent() {
+        isNullPresentCase_ = 0;
+        isNullPresent_ = null;
+        onChanged();
+        return this;
+      }
+
       private int bitField0_;
 
       private int index_ ;
       /**
-       * <code>optional int32 index = 1;</code>
-       *
        * <pre>
        **字段下标*
        * </pre>
-       */
-      public boolean hasIndex() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>optional int32 index = 1;</code>
        *
-       * <pre>
-       **字段下标*
-       * </pre>
+       * <code>int32 index = 1;</code>
        */
       public int getIndex() {
         return index_;
       }
       /**
-       * <code>optional int32 index = 1;</code>
-       *
        * <pre>
        **字段下标*
        * </pre>
+       *
+       * <code>int32 index = 1;</code>
        */
       public Builder setIndex(int value) {
-        bitField0_ |= 0x00000001;
+        
         index_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int32 index = 1;</code>
-       *
        * <pre>
        **字段下标*
        * </pre>
+       *
+       * <code>int32 index = 1;</code>
        */
       public Builder clearIndex() {
-        bitField0_ = (bitField0_ & ~0x00000001);
+        
         index_ = 0;
         onChanged();
         return this;
@@ -5088,98 +5288,76 @@ public final class CanalEntry {
 
       private int sqlType_ ;
       /**
-       * <code>optional int32 sqlType = 2;</code>
-       *
        * <pre>
        **字段java中类型*
        * </pre>
-       */
-      public boolean hasSqlType() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>optional int32 sqlType = 2;</code>
        *
-       * <pre>
-       **字段java中类型*
-       * </pre>
+       * <code>int32 sqlType = 2;</code>
        */
       public int getSqlType() {
         return sqlType_;
       }
       /**
-       * <code>optional int32 sqlType = 2;</code>
-       *
        * <pre>
        **字段java中类型*
        * </pre>
+       *
+       * <code>int32 sqlType = 2;</code>
        */
       public Builder setSqlType(int value) {
-        bitField0_ |= 0x00000002;
+        
         sqlType_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int32 sqlType = 2;</code>
-       *
        * <pre>
        **字段java中类型*
        * </pre>
+       *
+       * <code>int32 sqlType = 2;</code>
        */
       public Builder clearSqlType() {
-        bitField0_ = (bitField0_ & ~0x00000002);
+        
         sqlType_ = 0;
         onChanged();
         return this;
       }
 
-      private Object name_ = "";
+      private java.lang.Object name_ = "";
       /**
-       * <code>optional string name = 3;</code>
-       *
        * <pre>
        **字段名称(忽略大小写)，在mysql中是没有的*
        * </pre>
-       */
-      public boolean hasName() {
-        return ((bitField0_ & 0x00000004) == 0x00000004);
-      }
-      /**
-       * <code>optional string name = 3;</code>
        *
-       * <pre>
-       **字段名称(忽略大小写)，在mysql中是没有的*
-       * </pre>
+       * <code>string name = 3;</code>
        */
-      public String getName() {
-        Object ref = name_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getName() {
+        java.lang.Object ref = name_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            name_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          name_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string name = 3;</code>
-       *
        * <pre>
        **字段名称(忽略大小写)，在mysql中是没有的*
        * </pre>
+       *
+       * <code>string name = 3;</code>
        */
       public com.google.protobuf.ByteString
           getNameBytes() {
-        Object ref = name_;
+        java.lang.Object ref = name_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           name_ = b;
           return b;
         } else {
@@ -5187,48 +5365,49 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string name = 3;</code>
-       *
        * <pre>
        **字段名称(忽略大小写)，在mysql中是没有的*
        * </pre>
+       *
+       * <code>string name = 3;</code>
        */
       public Builder setName(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000004;
+  
         name_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string name = 3;</code>
-       *
        * <pre>
        **字段名称(忽略大小写)，在mysql中是没有的*
        * </pre>
+       *
+       * <code>string name = 3;</code>
        */
       public Builder clearName() {
-        bitField0_ = (bitField0_ & ~0x00000004);
+        
         name_ = getDefaultInstance().getName();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string name = 3;</code>
-       *
        * <pre>
        **字段名称(忽略大小写)，在mysql中是没有的*
        * </pre>
+       *
+       * <code>string name = 3;</code>
        */
       public Builder setNameBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000004;
+  checkByteStringIsUtf8(value);
+        
         name_ = value;
         onChanged();
         return this;
@@ -5236,47 +5415,37 @@ public final class CanalEntry {
 
       private boolean isKey_ ;
       /**
-       * <code>optional bool isKey = 4;</code>
-       *
        * <pre>
        **是否是主键*
        * </pre>
-       */
-      public boolean hasIsKey() {
-        return ((bitField0_ & 0x00000008) == 0x00000008);
-      }
-      /**
-       * <code>optional bool isKey = 4;</code>
        *
-       * <pre>
-       **是否是主键*
-       * </pre>
+       * <code>bool isKey = 4;</code>
        */
       public boolean getIsKey() {
         return isKey_;
       }
       /**
-       * <code>optional bool isKey = 4;</code>
-       *
        * <pre>
        **是否是主键*
        * </pre>
+       *
+       * <code>bool isKey = 4;</code>
        */
       public Builder setIsKey(boolean value) {
-        bitField0_ |= 0x00000008;
+        
         isKey_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional bool isKey = 4;</code>
-       *
        * <pre>
        **是否是主键*
        * </pre>
+       *
+       * <code>bool isKey = 4;</code>
        */
       public Builder clearIsKey() {
-        bitField0_ = (bitField0_ & ~0x00000008);
+        
         isKey_ = false;
         onChanged();
         return this;
@@ -5284,120 +5453,92 @@ public final class CanalEntry {
 
       private boolean updated_ ;
       /**
-       * <code>optional bool updated = 5;</code>
-       *
        * <pre>
        **如果EventType=UPDATE,用于标识这个字段值是否有修改*
        * </pre>
-       */
-      public boolean hasUpdated() {
-        return ((bitField0_ & 0x00000010) == 0x00000010);
-      }
-      /**
-       * <code>optional bool updated = 5;</code>
        *
-       * <pre>
-       **如果EventType=UPDATE,用于标识这个字段值是否有修改*
-       * </pre>
+       * <code>bool updated = 5;</code>
        */
       public boolean getUpdated() {
         return updated_;
       }
       /**
-       * <code>optional bool updated = 5;</code>
-       *
        * <pre>
        **如果EventType=UPDATE,用于标识这个字段值是否有修改*
        * </pre>
+       *
+       * <code>bool updated = 5;</code>
        */
       public Builder setUpdated(boolean value) {
-        bitField0_ |= 0x00000010;
+        
         updated_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional bool updated = 5;</code>
-       *
        * <pre>
        **如果EventType=UPDATE,用于标识这个字段值是否有修改*
        * </pre>
+       *
+       * <code>bool updated = 5;</code>
        */
       public Builder clearUpdated() {
-        bitField0_ = (bitField0_ & ~0x00000010);
+        
         updated_ = false;
         onChanged();
         return this;
       }
 
-      private boolean isNull_ ;
       /**
-       * <code>optional bool isNull = 6 [default = false];</code>
-       *
-       * <pre>
-       ** 标识是否为空  *
-       * </pre>
-       */
-      public boolean hasIsNull() {
-        return ((bitField0_ & 0x00000020) == 0x00000020);
-      }
-      /**
-       * <code>optional bool isNull = 6 [default = false];</code>
-       *
-       * <pre>
-       ** 标识是否为空  *
-       * </pre>
+       * <code>bool isNull = 6;</code>
        */
       public boolean getIsNull() {
-        return isNull_;
+        if (isNullPresentCase_ == 6) {
+          return (java.lang.Boolean) isNullPresent_;
+        }
+        return false;
       }
       /**
-       * <code>optional bool isNull = 6 [default = false];</code>
-       *
-       * <pre>
-       ** 标识是否为空  *
-       * </pre>
+       * <code>bool isNull = 6;</code>
        */
       public Builder setIsNull(boolean value) {
-        bitField0_ |= 0x00000020;
-        isNull_ = value;
+        isNullPresentCase_ = 6;
+        isNullPresent_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional bool isNull = 6 [default = false];</code>
-       *
-       * <pre>
-       ** 标识是否为空  *
-       * </pre>
+       * <code>bool isNull = 6;</code>
        */
       public Builder clearIsNull() {
-        bitField0_ = (bitField0_ & ~0x00000020);
-        isNull_ = false;
-        onChanged();
+        if (isNullPresentCase_ == 6) {
+          isNullPresentCase_ = 0;
+          isNullPresent_ = null;
+          onChanged();
+        }
         return this;
       }
 
-      private java.util.List<Pair> props_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_ =
         java.util.Collections.emptyList();
       private void ensurePropsIsMutable() {
         if (!((bitField0_ & 0x00000040) == 0x00000040)) {
-          props_ = new java.util.ArrayList<Pair>(props_);
+          props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>(props_);
           bitField0_ |= 0x00000040;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder> propsBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> propsBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public java.util.List<Pair> getPropsList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
         if (propsBuilder_ == null) {
           return java.util.Collections.unmodifiableList(props_);
         } else {
@@ -5405,11 +5546,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public int getPropsCount() {
         if (propsBuilder_ == null) {
@@ -5419,13 +5560,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public Pair getProps(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);
         } else {
@@ -5433,14 +5574,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public Builder setProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -5454,14 +5595,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public Builder setProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.set(index, builderForValue.build());
@@ -5472,13 +5613,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public Builder addProps(Pair value) {
+      public Builder addProps(com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -5492,14 +5633,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public Builder addProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -5513,14 +5654,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public Builder addProps(
-          Pair.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(builderForValue.build());
@@ -5531,14 +5672,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public Builder addProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(index, builderForValue.build());
@@ -5549,14 +5690,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public Builder addAllProps(
-          Iterable<? extends Pair> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.Pair> values) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -5568,11 +5709,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public Builder clearProps() {
         if (propsBuilder_ == null) {
@@ -5585,11 +5726,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
       public Builder removeProps(int index) {
         if (propsBuilder_ == null) {
@@ -5602,24 +5743,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public Pair.Builder getPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder getPropsBuilder(
           int index) {
         return getPropsFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public PairOrBuilder getPropsOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
           int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);  } else {
@@ -5627,13 +5768,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public java.util.List<? extends PairOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
            getPropsOrBuilderList() {
         if (propsBuilder_ != null) {
           return propsBuilder_.getMessageOrBuilderList();
@@ -5642,45 +5783,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public Pair.Builder addPropsBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder() {
         return getPropsFieldBuilder().addBuilder(
-            Pair.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public Pair.Builder addPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder(
           int index) {
         return getPropsFieldBuilder().addBuilder(
-            index, Pair.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 7;</code>
        */
-      public java.util.List<Pair.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder> 
            getPropsBuilderList() {
         return getPropsFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
           getPropsFieldBuilder() {
         if (propsBuilder_ == null) {
-          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              Pair, Pair.Builder, PairOrBuilder>(
+          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder>(
                   props_,
                   ((bitField0_ & 0x00000040) == 0x00000040),
                   getParentForChildren(),
@@ -5690,52 +5831,40 @@ public final class CanalEntry {
         return propsBuilder_;
       }
 
-      private Object value_ = "";
+      private java.lang.Object value_ = "";
       /**
-       * <code>optional string value = 8;</code>
-       *
        * <pre>
        ** 字段值,timestamp,Datetime是一个时间格式的文本 *
        * </pre>
-       */
-      public boolean hasValue() {
-        return ((bitField0_ & 0x00000080) == 0x00000080);
-      }
-      /**
-       * <code>optional string value = 8;</code>
        *
-       * <pre>
-       ** 字段值,timestamp,Datetime是一个时间格式的文本 *
-       * </pre>
+       * <code>string value = 8;</code>
        */
-      public String getValue() {
-        Object ref = value_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getValue() {
+        java.lang.Object ref = value_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            value_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          value_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string value = 8;</code>
-       *
        * <pre>
        ** 字段值,timestamp,Datetime是一个时间格式的文本 *
        * </pre>
+       *
+       * <code>string value = 8;</code>
        */
       public com.google.protobuf.ByteString
           getValueBytes() {
-        Object ref = value_;
+        java.lang.Object ref = value_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           value_ = b;
           return b;
         } else {
@@ -5743,48 +5872,49 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string value = 8;</code>
-       *
        * <pre>
        ** 字段值,timestamp,Datetime是一个时间格式的文本 *
        * </pre>
+       *
+       * <code>string value = 8;</code>
        */
       public Builder setValue(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000080;
+  
         value_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string value = 8;</code>
-       *
        * <pre>
        ** 字段值,timestamp,Datetime是一个时间格式的文本 *
        * </pre>
+       *
+       * <code>string value = 8;</code>
        */
       public Builder clearValue() {
-        bitField0_ = (bitField0_ & ~0x00000080);
+        
         value_ = getDefaultInstance().getValue();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string value = 8;</code>
-       *
        * <pre>
        ** 字段值,timestamp,Datetime是一个时间格式的文本 *
        * </pre>
+       *
+       * <code>string value = 8;</code>
        */
       public Builder setValueBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000080;
+  checkByteStringIsUtf8(value);
+        
         value_ = value;
         onChanged();
         return this;
@@ -5792,98 +5922,76 @@ public final class CanalEntry {
 
       private int length_ ;
       /**
-       * <code>optional int32 length = 9;</code>
-       *
        * <pre>
        ** 对应数据对象原始长度 *
        * </pre>
-       */
-      public boolean hasLength() {
-        return ((bitField0_ & 0x00000100) == 0x00000100);
-      }
-      /**
-       * <code>optional int32 length = 9;</code>
        *
-       * <pre>
-       ** 对应数据对象原始长度 *
-       * </pre>
+       * <code>int32 length = 9;</code>
        */
       public int getLength() {
         return length_;
       }
       /**
-       * <code>optional int32 length = 9;</code>
-       *
        * <pre>
        ** 对应数据对象原始长度 *
        * </pre>
+       *
+       * <code>int32 length = 9;</code>
        */
       public Builder setLength(int value) {
-        bitField0_ |= 0x00000100;
+        
         length_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int32 length = 9;</code>
-       *
        * <pre>
        ** 对应数据对象原始长度 *
        * </pre>
+       *
+       * <code>int32 length = 9;</code>
        */
       public Builder clearLength() {
-        bitField0_ = (bitField0_ & ~0x00000100);
+        
         length_ = 0;
         onChanged();
         return this;
       }
 
-      private Object mysqlType_ = "";
+      private java.lang.Object mysqlType_ = "";
       /**
-       * <code>optional string mysqlType = 10;</code>
-       *
        * <pre>
        **字段mysql类型*
        * </pre>
-       */
-      public boolean hasMysqlType() {
-        return ((bitField0_ & 0x00000200) == 0x00000200);
-      }
-      /**
-       * <code>optional string mysqlType = 10;</code>
        *
-       * <pre>
-       **字段mysql类型*
-       * </pre>
+       * <code>string mysqlType = 10;</code>
        */
-      public String getMysqlType() {
-        Object ref = mysqlType_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getMysqlType() {
+        java.lang.Object ref = mysqlType_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            mysqlType_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          mysqlType_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string mysqlType = 10;</code>
-       *
        * <pre>
        **字段mysql类型*
        * </pre>
+       *
+       * <code>string mysqlType = 10;</code>
        */
       public com.google.protobuf.ByteString
           getMysqlTypeBytes() {
-        Object ref = mysqlType_;
+        java.lang.Object ref = mysqlType_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           mysqlType_ = b;
           return b;
         } else {
@@ -5891,62 +5999,104 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string mysqlType = 10;</code>
-       *
        * <pre>
        **字段mysql类型*
        * </pre>
+       *
+       * <code>string mysqlType = 10;</code>
        */
       public Builder setMysqlType(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000200;
+  
         mysqlType_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string mysqlType = 10;</code>
-       *
        * <pre>
        **字段mysql类型*
        * </pre>
+       *
+       * <code>string mysqlType = 10;</code>
        */
       public Builder clearMysqlType() {
-        bitField0_ = (bitField0_ & ~0x00000200);
+        
         mysqlType_ = getDefaultInstance().getMysqlType();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string mysqlType = 10;</code>
-       *
        * <pre>
        **字段mysql类型*
        * </pre>
+       *
+       * <code>string mysqlType = 10;</code>
        */
       public Builder setMysqlTypeBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000200;
+  checkByteStringIsUtf8(value);
+        
         mysqlType_ = value;
         onChanged();
         return this;
       }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
 
       // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Column)
     }
 
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Column)
+    private static final com.alibaba.otter.canal.protocol.CanalEntry.Column DEFAULT_INSTANCE;
     static {
-      defaultInstance = new Column(true);
-      defaultInstance.initFields();
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalEntry.Column();
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Column getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Column>
+        PARSER = new com.google.protobuf.AbstractParser<Column>() {
+      @java.lang.Override
+      public Column parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Column(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Column> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Column> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalEntry.Column getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Column)
   }
 
   public interface RowDataOrBuilder extends
@@ -5954,168 +6104,168 @@ public final class CanalEntry {
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
-    java.util.List<Column>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> 
         getBeforeColumnsList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
-    Column getBeforeColumns(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.Column getBeforeColumns(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
     int getBeforeColumnsCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
-    java.util.List<? extends ColumnOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> 
         getBeforeColumnsOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
-    ColumnOrBuilder getBeforeColumnsOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder getBeforeColumnsOrBuilder(
+        int index);
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
-    java.util.List<Column>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> 
         getAfterColumnsList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
-    Column getAfterColumns(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.Column getAfterColumns(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
     int getAfterColumnsCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
-    java.util.List<? extends ColumnOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> 
         getAfterColumnsOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
-    ColumnOrBuilder getAfterColumnsOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder getAfterColumnsOrBuilder(
+        int index);
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    java.util.List<Pair>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> 
         getPropsList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    Pair getProps(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
     int getPropsCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    java.util.List<? extends PairOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    PairOrBuilder getPropsOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
+        int index);
   }
   /**
    * Protobuf type {@code com.alibaba.otter.canal.protocol.RowData}
    */
-  public static final class RowData extends
-      com.google.protobuf.GeneratedMessage implements
+  public  static final class RowData extends
+      com.google.protobuf.GeneratedMessageV3 implements
       // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.RowData)
       RowDataOrBuilder {
+  private static final long serialVersionUID = 0L;
     // Use RowData.newBuilder() to construct.
-    private RowData(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    private RowData(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
-      this.unknownFields = builder.getUnknownFields();
     }
-    private RowData(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final RowData defaultInstance;
-    public static RowData getDefaultInstance() {
-      return defaultInstance;
+    private RowData() {
+      beforeColumns_ = java.util.Collections.emptyList();
+      afterColumns_ = java.util.Collections.emptyList();
+      props_ = java.util.Collections.emptyList();
     }
 
-    public RowData getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @Override
+    @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
+    getUnknownFields() {
       return this.unknownFields;
     }
     private RowData(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
       int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
@@ -6127,35 +6277,38 @@ public final class CanalEntry {
             case 0:
               done = true;
               break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
             case 10: {
               if (!((mutable_bitField0_ & 0x00000001) == 0x00000001)) {
-                beforeColumns_ = new java.util.ArrayList<Column>();
+                beforeColumns_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Column>();
                 mutable_bitField0_ |= 0x00000001;
               }
-              beforeColumns_.add(input.readMessage(Column.PARSER, extensionRegistry));
+              beforeColumns_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Column.parser(), extensionRegistry));
               break;
             }
             case 18: {
               if (!((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-                afterColumns_ = new java.util.ArrayList<Column>();
+                afterColumns_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Column>();
                 mutable_bitField0_ |= 0x00000002;
               }
-              afterColumns_.add(input.readMessage(Column.PARSER, extensionRegistry));
+              afterColumns_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Column.parser(), extensionRegistry));
               break;
             }
             case 26: {
               if (!((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
-                props_ = new java.util.ArrayList<Pair>();
+                props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>();
                 mutable_bitField0_ |= 0x00000004;
               }
-              props_.add(input.readMessage(Pair.PARSER, extensionRegistry));
+              props_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Pair.parser(), extensionRegistry));
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
               break;
             }
           }
@@ -6164,7 +6317,7 @@ public final class CanalEntry {
         throw e.setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
+            e).setUnfinishedMessage(this);
       } finally {
         if (((mutable_bitField0_ & 0x00000001) == 0x00000001)) {
           beforeColumns_ = java.util.Collections.unmodifiableList(beforeColumns_);
@@ -6181,202 +6334,184 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor;
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor;
     }
 
-    protected FieldAccessorTable
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_fieldAccessorTable
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              RowData.class, Builder.class);
-    }
-
-    public static com.google.protobuf.Parser<RowData> PARSER =
-        new com.google.protobuf.AbstractParser<RowData>() {
-      public RowData parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new RowData(input, extensionRegistry);
-      }
-    };
-
-    @Override
-    public com.google.protobuf.Parser<RowData> getParserForType() {
-      return PARSER;
+              com.alibaba.otter.canal.protocol.CanalEntry.RowData.class, com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder.class);
     }
 
     public static final int BEFORECOLUMNS_FIELD_NUMBER = 1;
-    private java.util.List<Column> beforeColumns_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> beforeColumns_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
-    public java.util.List<Column> getBeforeColumnsList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> getBeforeColumnsList() {
       return beforeColumns_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
-    public java.util.List<? extends ColumnOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> 
         getBeforeColumnsOrBuilderList() {
       return beforeColumns_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
     public int getBeforeColumnsCount() {
       return beforeColumns_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
-    public Column getBeforeColumns(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.Column getBeforeColumns(int index) {
       return beforeColumns_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改前,删除前) *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
      */
-    public ColumnOrBuilder getBeforeColumnsOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder getBeforeColumnsOrBuilder(
         int index) {
       return beforeColumns_.get(index);
     }
 
     public static final int AFTERCOLUMNS_FIELD_NUMBER = 2;
-    private java.util.List<Column> afterColumns_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> afterColumns_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
-    public java.util.List<Column> getAfterColumnsList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> getAfterColumnsList() {
       return afterColumns_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
-    public java.util.List<? extends ColumnOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> 
         getAfterColumnsOrBuilderList() {
       return afterColumns_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
     public int getAfterColumnsCount() {
       return afterColumns_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
-    public Column getAfterColumns(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.Column getAfterColumns(int index) {
       return afterColumns_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-     *
      * <pre>
      ** 字段信息，增量数据(修改后,新增后)  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
      */
-    public ColumnOrBuilder getAfterColumnsOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder getAfterColumnsOrBuilder(
         int index) {
       return afterColumns_.get(index);
     }
 
     public static final int PROPS_FIELD_NUMBER = 3;
-    private java.util.List<Pair> props_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public java.util.List<Pair> getPropsList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public java.util.List<? extends PairOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
     public int getPropsCount() {
       return props_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public Pair getProps(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
       return props_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public PairOrBuilder getPropsOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
         int index) {
       return props_.get(index);
     }
 
-    private void initFields() {
-      beforeColumns_ = java.util.Collections.emptyList();
-      afterColumns_ = java.util.Collections.emptyList();
-      props_ = java.util.Collections.emptyList();
-    }
     private byte memoizedIsInitialized = -1;
+    @java.lang.Override
     public final boolean isInitialized() {
       byte isInitialized = memoizedIsInitialized;
       if (isInitialized == 1) return true;
@@ -6386,9 +6521,9 @@ public final class CanalEntry {
       return true;
     }
 
+    @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      getSerializedSize();
       for (int i = 0; i < beforeColumns_.size(); i++) {
         output.writeMessage(1, beforeColumns_.get(i));
       }
@@ -6398,12 +6533,12 @@ public final class CanalEntry {
       for (int i = 0; i < props_.size(); i++) {
         output.writeMessage(3, props_.get(i));
       }
-      getUnknownFields().writeTo(output);
+      unknownFields.writeTo(output);
     }
 
-    private int memoizedSerializedSize = -1;
+    @java.lang.Override
     public int getSerializedSize() {
-      int size = memoizedSerializedSize;
+      int size = memoizedSize;
       if (size != -1) return size;
 
       size = 0;
@@ -6419,81 +6554,143 @@ public final class CanalEntry {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(3, props_.get(i));
       }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
       return size;
     }
 
-    private static final long serialVersionUID = 0L;
-    @Override
-    protected Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalEntry.RowData)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalEntry.RowData other = (com.alibaba.otter.canal.protocol.CanalEntry.RowData) obj;
+
+      boolean result = true;
+      result = result && getBeforeColumnsList()
+          .equals(other.getBeforeColumnsList());
+      result = result && getAfterColumnsList()
+          .equals(other.getAfterColumnsList());
+      result = result && getPropsList()
+          .equals(other.getPropsList());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
     }
 
-    public static RowData parseFrom(
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      if (getBeforeColumnsCount() > 0) {
+        hash = (37 * hash) + BEFORECOLUMNS_FIELD_NUMBER;
+        hash = (53 * hash) + getBeforeColumnsList().hashCode();
+      }
+      if (getAfterColumnsCount() > 0) {
+        hash = (37 * hash) + AFTERCOLUMNS_FIELD_NUMBER;
+        hash = (53 * hash) + getAfterColumnsList().hashCode();
+      }
+      if (getPropsCount() > 0) {
+        hash = (37 * hash) + PROPS_FIELD_NUMBER;
+        hash = (53 * hash) + getPropsList().hashCode();
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static RowData parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static RowData parseFrom(byte[] data)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static RowData parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static RowData parseFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static RowData parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static RowData parseDelimitedFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
     }
-    public static RowData parseDelimitedFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static RowData parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static RowData parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
-    public static Builder newBuilder() { return Builder.create(); }
+    @java.lang.Override
     public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(RowData prototype) {
-      return newBuilder().mergeFrom(prototype);
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalEntry.RowData prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
     }
-    public Builder toBuilder() { return newBuilder(this); }
 
-    @Override
+    @java.lang.Override
     protected Builder newBuilderForType(
-        BuilderParent parent) {
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
@@ -6501,19 +6698,20 @@ public final class CanalEntry {
      * Protobuf type {@code com.alibaba.otter.canal.protocol.RowData}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.RowData)
-        RowDataOrBuilder {
+        com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor;
       }
 
-      protected FieldAccessorTable
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_fieldAccessorTable
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                RowData.class, Builder.class);
+                com.alibaba.otter.canal.protocol.CanalEntry.RowData.class, com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder.class);
       }
 
       // Construct using com.alibaba.otter.canal.protocol.CanalEntry.RowData.newBuilder()
@@ -6522,21 +6720,19 @@ public final class CanalEntry {
       }
 
       private Builder(
-          BuilderParent parent) {
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
         super(parent);
         maybeForceBuilderInitialization();
       }
       private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
           getBeforeColumnsFieldBuilder();
           getAfterColumnsFieldBuilder();
           getPropsFieldBuilder();
         }
       }
-      private static Builder create() {
-        return new Builder();
-      }
-
+      @java.lang.Override
       public Builder clear() {
         super.clear();
         if (beforeColumnsBuilder_ == null) {
@@ -6560,29 +6756,29 @@ public final class CanalEntry {
         return this;
       }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
+      @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor;
       }
 
-      public RowData getDefaultInstanceForType() {
-        return RowData.getDefaultInstance();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowData getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalEntry.RowData.getDefaultInstance();
       }
 
-      public RowData build() {
-        RowData result = buildPartial();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowData build() {
+        com.alibaba.otter.canal.protocol.CanalEntry.RowData result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
         return result;
       }
 
-      public RowData buildPartial() {
-        RowData result = new RowData(this);
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowData buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalEntry.RowData result = new com.alibaba.otter.canal.protocol.CanalEntry.RowData(this);
         int from_bitField0_ = bitField0_;
         if (beforeColumnsBuilder_ == null) {
           if (((bitField0_ & 0x00000001) == 0x00000001)) {
@@ -6615,17 +6811,50 @@ public final class CanalEntry {
         return result;
       }
 
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof RowData) {
-          return mergeFrom((RowData)other);
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalEntry.RowData) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalEntry.RowData)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(RowData other) {
-        if (other == RowData.getDefaultInstance()) return this;
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalEntry.RowData other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalEntry.RowData.getDefaultInstance()) return this;
         if (beforeColumnsBuilder_ == null) {
           if (!other.beforeColumns_.isEmpty()) {
             if (beforeColumns_.isEmpty()) {
@@ -6645,7 +6874,7 @@ public final class CanalEntry {
               beforeColumns_ = other.beforeColumns_;
               bitField0_ = (bitField0_ & ~0x00000001);
               beforeColumnsBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getBeforeColumnsFieldBuilder() : null;
             } else {
               beforeColumnsBuilder_.addAllMessages(other.beforeColumns_);
@@ -6671,7 +6900,7 @@ public final class CanalEntry {
               afterColumns_ = other.afterColumns_;
               bitField0_ = (bitField0_ & ~0x00000002);
               afterColumnsBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getAfterColumnsFieldBuilder() : null;
             } else {
               afterColumnsBuilder_.addAllMessages(other.afterColumns_);
@@ -6697,31 +6926,34 @@ public final class CanalEntry {
               props_ = other.props_;
               bitField0_ = (bitField0_ & ~0x00000004);
               propsBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getPropsFieldBuilder() : null;
             } else {
               propsBuilder_.addAllMessages(other.props_);
             }
           }
         }
-        this.mergeUnknownFields(other.getUnknownFields());
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
         return this;
       }
 
+      @java.lang.Override
       public final boolean isInitialized() {
         return true;
       }
 
+      @java.lang.Override
       public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        RowData parsedMessage = null;
+        com.alibaba.otter.canal.protocol.CanalEntry.RowData parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (RowData) e.getUnfinishedMessage();
-          throw e;
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalEntry.RowData) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
             mergeFrom(parsedMessage);
@@ -6731,26 +6963,26 @@ public final class CanalEntry {
       }
       private int bitField0_;
 
-      private java.util.List<Column> beforeColumns_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> beforeColumns_ =
         java.util.Collections.emptyList();
       private void ensureBeforeColumnsIsMutable() {
         if (!((bitField0_ & 0x00000001) == 0x00000001)) {
-          beforeColumns_ = new java.util.ArrayList<Column>(beforeColumns_);
+          beforeColumns_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Column>(beforeColumns_);
           bitField0_ |= 0x00000001;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Column, Column.Builder, ColumnOrBuilder> beforeColumnsBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Column, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder, com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> beforeColumnsBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public java.util.List<Column> getBeforeColumnsList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> getBeforeColumnsList() {
         if (beforeColumnsBuilder_ == null) {
           return java.util.Collections.unmodifiableList(beforeColumns_);
         } else {
@@ -6758,11 +6990,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public int getBeforeColumnsCount() {
         if (beforeColumnsBuilder_ == null) {
@@ -6772,13 +7004,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public Column getBeforeColumns(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column getBeforeColumns(int index) {
         if (beforeColumnsBuilder_ == null) {
           return beforeColumns_.get(index);
         } else {
@@ -6786,14 +7018,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public Builder setBeforeColumns(
-          int index, Column value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Column value) {
         if (beforeColumnsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -6807,14 +7039,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public Builder setBeforeColumns(
-          int index, Column.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder builderForValue) {
         if (beforeColumnsBuilder_ == null) {
           ensureBeforeColumnsIsMutable();
           beforeColumns_.set(index, builderForValue.build());
@@ -6825,13 +7057,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public Builder addBeforeColumns(Column value) {
+      public Builder addBeforeColumns(com.alibaba.otter.canal.protocol.CanalEntry.Column value) {
         if (beforeColumnsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -6845,14 +7077,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public Builder addBeforeColumns(
-          int index, Column value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Column value) {
         if (beforeColumnsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -6866,14 +7098,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public Builder addBeforeColumns(
-          Column.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder builderForValue) {
         if (beforeColumnsBuilder_ == null) {
           ensureBeforeColumnsIsMutable();
           beforeColumns_.add(builderForValue.build());
@@ -6884,14 +7116,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public Builder addBeforeColumns(
-          int index, Column.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder builderForValue) {
         if (beforeColumnsBuilder_ == null) {
           ensureBeforeColumnsIsMutable();
           beforeColumns_.add(index, builderForValue.build());
@@ -6902,14 +7134,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public Builder addAllBeforeColumns(
-          Iterable<? extends Column> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.Column> values) {
         if (beforeColumnsBuilder_ == null) {
           ensureBeforeColumnsIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -6921,11 +7153,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public Builder clearBeforeColumns() {
         if (beforeColumnsBuilder_ == null) {
@@ -6938,11 +7170,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
       public Builder removeBeforeColumns(int index) {
         if (beforeColumnsBuilder_ == null) {
@@ -6955,24 +7187,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public Column.Builder getBeforeColumnsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder getBeforeColumnsBuilder(
           int index) {
         return getBeforeColumnsFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public ColumnOrBuilder getBeforeColumnsOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder getBeforeColumnsOrBuilder(
           int index) {
         if (beforeColumnsBuilder_ == null) {
           return beforeColumns_.get(index);  } else {
@@ -6980,13 +7212,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public java.util.List<? extends ColumnOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> 
            getBeforeColumnsOrBuilderList() {
         if (beforeColumnsBuilder_ != null) {
           return beforeColumnsBuilder_.getMessageOrBuilderList();
@@ -6995,45 +7227,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public Column.Builder addBeforeColumnsBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder addBeforeColumnsBuilder() {
         return getBeforeColumnsFieldBuilder().addBuilder(
-            Column.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.Column.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public Column.Builder addBeforeColumnsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder addBeforeColumnsBuilder(
           int index) {
         return getBeforeColumnsFieldBuilder().addBuilder(
-            index, Column.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.Column.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改前,删除前) *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column beforeColumns = 1;</code>
        */
-      public java.util.List<Column.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder> 
            getBeforeColumnsBuilderList() {
         return getBeforeColumnsFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Column, Column.Builder, ColumnOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Column, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder, com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> 
           getBeforeColumnsFieldBuilder() {
         if (beforeColumnsBuilder_ == null) {
-          beforeColumnsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              Column, Column.Builder, ColumnOrBuilder>(
+          beforeColumnsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Column, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder, com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder>(
                   beforeColumns_,
                   ((bitField0_ & 0x00000001) == 0x00000001),
                   getParentForChildren(),
@@ -7043,26 +7275,26 @@ public final class CanalEntry {
         return beforeColumnsBuilder_;
       }
 
-      private java.util.List<Column> afterColumns_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> afterColumns_ =
         java.util.Collections.emptyList();
       private void ensureAfterColumnsIsMutable() {
         if (!((bitField0_ & 0x00000002) == 0x00000002)) {
-          afterColumns_ = new java.util.ArrayList<Column>(afterColumns_);
+          afterColumns_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Column>(afterColumns_);
           bitField0_ |= 0x00000002;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Column, Column.Builder, ColumnOrBuilder> afterColumnsBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Column, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder, com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> afterColumnsBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public java.util.List<Column> getAfterColumnsList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column> getAfterColumnsList() {
         if (afterColumnsBuilder_ == null) {
           return java.util.Collections.unmodifiableList(afterColumns_);
         } else {
@@ -7070,11 +7302,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public int getAfterColumnsCount() {
         if (afterColumnsBuilder_ == null) {
@@ -7084,13 +7316,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public Column getAfterColumns(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column getAfterColumns(int index) {
         if (afterColumnsBuilder_ == null) {
           return afterColumns_.get(index);
         } else {
@@ -7098,14 +7330,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public Builder setAfterColumns(
-          int index, Column value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Column value) {
         if (afterColumnsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -7119,14 +7351,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public Builder setAfterColumns(
-          int index, Column.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder builderForValue) {
         if (afterColumnsBuilder_ == null) {
           ensureAfterColumnsIsMutable();
           afterColumns_.set(index, builderForValue.build());
@@ -7137,13 +7369,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public Builder addAfterColumns(Column value) {
+      public Builder addAfterColumns(com.alibaba.otter.canal.protocol.CanalEntry.Column value) {
         if (afterColumnsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -7157,14 +7389,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public Builder addAfterColumns(
-          int index, Column value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Column value) {
         if (afterColumnsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -7178,14 +7410,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public Builder addAfterColumns(
-          Column.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder builderForValue) {
         if (afterColumnsBuilder_ == null) {
           ensureAfterColumnsIsMutable();
           afterColumns_.add(builderForValue.build());
@@ -7196,14 +7428,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public Builder addAfterColumns(
-          int index, Column.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder builderForValue) {
         if (afterColumnsBuilder_ == null) {
           ensureAfterColumnsIsMutable();
           afterColumns_.add(index, builderForValue.build());
@@ -7214,14 +7446,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public Builder addAllAfterColumns(
-          Iterable<? extends Column> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.Column> values) {
         if (afterColumnsBuilder_ == null) {
           ensureAfterColumnsIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -7233,11 +7465,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public Builder clearAfterColumns() {
         if (afterColumnsBuilder_ == null) {
@@ -7250,11 +7482,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
       public Builder removeAfterColumns(int index) {
         if (afterColumnsBuilder_ == null) {
@@ -7267,24 +7499,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public Column.Builder getAfterColumnsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder getAfterColumnsBuilder(
           int index) {
         return getAfterColumnsFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public ColumnOrBuilder getAfterColumnsOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder getAfterColumnsOrBuilder(
           int index) {
         if (afterColumnsBuilder_ == null) {
           return afterColumns_.get(index);  } else {
@@ -7292,13 +7524,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public java.util.List<? extends ColumnOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> 
            getAfterColumnsOrBuilderList() {
         if (afterColumnsBuilder_ != null) {
           return afterColumnsBuilder_.getMessageOrBuilderList();
@@ -7307,45 +7539,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public Column.Builder addAfterColumnsBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder addAfterColumnsBuilder() {
         return getAfterColumnsFieldBuilder().addBuilder(
-            Column.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.Column.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public Column.Builder addAfterColumnsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder addAfterColumnsBuilder(
           int index) {
         return getAfterColumnsFieldBuilder().addBuilder(
-            index, Column.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.Column.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
-       *
        * <pre>
        ** 字段信息，增量数据(修改后,新增后)  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Column afterColumns = 2;</code>
        */
-      public java.util.List<Column.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder> 
            getAfterColumnsBuilderList() {
         return getAfterColumnsFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Column, Column.Builder, ColumnOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Column, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder, com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder> 
           getAfterColumnsFieldBuilder() {
         if (afterColumnsBuilder_ == null) {
-          afterColumnsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              Column, Column.Builder, ColumnOrBuilder>(
+          afterColumnsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Column, com.alibaba.otter.canal.protocol.CanalEntry.Column.Builder, com.alibaba.otter.canal.protocol.CanalEntry.ColumnOrBuilder>(
                   afterColumns_,
                   ((bitField0_ & 0x00000002) == 0x00000002),
                   getParentForChildren(),
@@ -7355,26 +7587,26 @@ public final class CanalEntry {
         return afterColumnsBuilder_;
       }
 
-      private java.util.List<Pair> props_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_ =
         java.util.Collections.emptyList();
       private void ensurePropsIsMutable() {
         if (!((bitField0_ & 0x00000004) == 0x00000004)) {
-          props_ = new java.util.ArrayList<Pair>(props_);
+          props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>(props_);
           bitField0_ |= 0x00000004;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder> propsBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> propsBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<Pair> getPropsList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
         if (propsBuilder_ == null) {
           return java.util.Collections.unmodifiableList(props_);
         } else {
@@ -7382,11 +7614,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public int getPropsCount() {
         if (propsBuilder_ == null) {
@@ -7396,13 +7628,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair getProps(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);
         } else {
@@ -7410,14 +7642,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder setProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -7431,14 +7663,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder setProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.set(index, builderForValue.build());
@@ -7449,13 +7681,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Builder addProps(Pair value) {
+      public Builder addProps(com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -7469,14 +7701,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -7490,14 +7722,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          Pair.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(builderForValue.build());
@@ -7508,14 +7740,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(index, builderForValue.build());
@@ -7526,14 +7758,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addAllProps(
-          Iterable<? extends Pair> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.Pair> values) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -7545,11 +7777,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder clearProps() {
         if (propsBuilder_ == null) {
@@ -7562,11 +7794,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder removeProps(int index) {
         if (propsBuilder_ == null) {
@@ -7579,24 +7811,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder getPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder getPropsBuilder(
           int index) {
         return getPropsFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public PairOrBuilder getPropsOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
           int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);  } else {
@@ -7604,13 +7836,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<? extends PairOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
            getPropsOrBuilderList() {
         if (propsBuilder_ != null) {
           return propsBuilder_.getMessageOrBuilderList();
@@ -7619,45 +7851,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder addPropsBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder() {
         return getPropsFieldBuilder().addBuilder(
-            Pair.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder addPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder(
           int index) {
         return getPropsFieldBuilder().addBuilder(
-            index, Pair.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<Pair.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder> 
            getPropsBuilderList() {
         return getPropsFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
           getPropsFieldBuilder() {
         if (propsBuilder_ == null) {
-          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              Pair, Pair.Builder, PairOrBuilder>(
+          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder>(
                   props_,
                   ((bitField0_ & 0x00000004) == 0x00000004),
                   getParentForChildren(),
@@ -7666,16 +7898,57 @@ public final class CanalEntry {
         }
         return propsBuilder_;
       }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
 
       // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.RowData)
     }
 
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.RowData)
+    private static final com.alibaba.otter.canal.protocol.CanalEntry.RowData DEFAULT_INSTANCE;
     static {
-      defaultInstance = new RowData(true);
-      defaultInstance.initFields();
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalEntry.RowData();
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowData getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<RowData>
+        PARSER = new com.google.protobuf.AbstractParser<RowData>() {
+      @java.lang.Override
+      public RowData parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new RowData(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<RowData> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<RowData> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalEntry.RowData getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.RowData)
   }
 
   public interface RowChangeOrBuilder extends
@@ -7683,232 +7956,193 @@ public final class CanalEntry {
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>optional int64 tableId = 1;</code>
-     *
      * <pre>
      **tableId,由数据库产生*
      * </pre>
-     */
-    boolean hasTableId();
-    /**
-     * <code>optional int64 tableId = 1;</code>
      *
-     * <pre>
-     **tableId,由数据库产生*
-     * </pre>
+     * <code>int64 tableId = 1;</code>
      */
     long getTableId();
 
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 2 [default = UPDATE];</code>
-     *
-     * <pre>
-     **数据变更类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
      */
-    boolean hasEventType();
+    int getEventTypeValue();
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 2 [default = UPDATE];</code>
-     *
-     * <pre>
-     **数据变更类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
      */
-    EventType getEventType();
+    com.alibaba.otter.canal.protocol.CanalEntry.EventType getEventType();
 
     /**
-     * <code>optional bool isDdl = 10 [default = false];</code>
-     *
-     * <pre>
-     ** 标识是否是ddl语句  *
-     * </pre>
-     */
-    boolean hasIsDdl();
-    /**
-     * <code>optional bool isDdl = 10 [default = false];</code>
-     *
-     * <pre>
-     ** 标识是否是ddl语句  *
-     * </pre>
+     * <code>bool isDdl = 10;</code>
      */
     boolean getIsDdl();
 
     /**
-     * <code>optional string sql = 11;</code>
-     *
      * <pre>
      ** ddl/query的sql语句  *
      * </pre>
+     *
+     * <code>string sql = 11;</code>
      */
-    boolean hasSql();
+    java.lang.String getSql();
     /**
-     * <code>optional string sql = 11;</code>
-     *
      * <pre>
      ** ddl/query的sql语句  *
      * </pre>
-     */
-    String getSql();
-    /**
-     * <code>optional string sql = 11;</code>
      *
-     * <pre>
-     ** ddl/query的sql语句  *
-     * </pre>
+     * <code>string sql = 11;</code>
      */
     com.google.protobuf.ByteString
         getSqlBytes();
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
-    java.util.List<RowData>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.RowData> 
         getRowDatasList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
-    RowData getRowDatas(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.RowData getRowDatas(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
     int getRowDatasCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
-    java.util.List<? extends RowDataOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder> 
         getRowDatasOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
-    RowDataOrBuilder getRowDatasOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder getRowDatasOrBuilder(
+        int index);
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
-    java.util.List<Pair>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> 
         getPropsList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
-    Pair getProps(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
     int getPropsCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
-    java.util.List<? extends PairOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
-    PairOrBuilder getPropsOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
+        int index);
 
     /**
-     * <code>optional string ddlSchemaName = 14;</code>
-     *
      * <pre>
      ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
      * </pre>
+     *
+     * <code>string ddlSchemaName = 14;</code>
      */
-    boolean hasDdlSchemaName();
+    java.lang.String getDdlSchemaName();
     /**
-     * <code>optional string ddlSchemaName = 14;</code>
-     *
      * <pre>
      ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
      * </pre>
-     */
-    String getDdlSchemaName();
-    /**
-     * <code>optional string ddlSchemaName = 14;</code>
      *
-     * <pre>
-     ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
-     * </pre>
+     * <code>string ddlSchemaName = 14;</code>
      */
     com.google.protobuf.ByteString
         getDdlSchemaNameBytes();
+
+    public com.alibaba.otter.canal.protocol.CanalEntry.RowChange.EventTypePresentCase getEventTypePresentCase();
+
+    public com.alibaba.otter.canal.protocol.CanalEntry.RowChange.IsDdlPresentCase getIsDdlPresentCase();
   }
   /**
-   * Protobuf type {@code com.alibaba.otter.canal.protocol.RowChange}
-   *
    * <pre>
    **message row 每行变更数据的数据结构*
    * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.RowChange}
    */
-  public static final class RowChange extends
-      com.google.protobuf.GeneratedMessage implements
+  public  static final class RowChange extends
+      com.google.protobuf.GeneratedMessageV3 implements
       // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.RowChange)
       RowChangeOrBuilder {
+  private static final long serialVersionUID = 0L;
     // Use RowChange.newBuilder() to construct.
-    private RowChange(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    private RowChange(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
-      this.unknownFields = builder.getUnknownFields();
     }
-    private RowChange(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final RowChange defaultInstance;
-    public static RowChange getDefaultInstance() {
-      return defaultInstance;
+    private RowChange() {
+      tableId_ = 0L;
+      sql_ = "";
+      rowDatas_ = java.util.Collections.emptyList();
+      props_ = java.util.Collections.emptyList();
+      ddlSchemaName_ = "";
     }
 
-    public RowChange getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @Override
+    @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
+    getUnknownFields() {
       return this.unknownFields;
     }
     private RowChange(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
       int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
@@ -7920,60 +8154,57 @@ public final class CanalEntry {
             case 0:
               done = true;
               break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
             case 8: {
-              bitField0_ |= 0x00000001;
+
               tableId_ = input.readInt64();
               break;
             }
             case 16: {
               int rawValue = input.readEnum();
-              EventType value = EventType.valueOf(rawValue);
-              if (value == null) {
-                unknownFields.mergeVarintField(2, rawValue);
-              } else {
-                bitField0_ |= 0x00000002;
-                eventType_ = value;
-              }
+              eventTypePresentCase_ = 2;
+              eventTypePresent_ = rawValue;
               break;
             }
             case 80: {
-              bitField0_ |= 0x00000004;
-              isDdl_ = input.readBool();
+              isDdlPresentCase_ = 10;
+              isDdlPresent_ = input.readBool();
               break;
             }
             case 90: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000008;
-              sql_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              sql_ = s;
               break;
             }
             case 98: {
               if (!((mutable_bitField0_ & 0x00000010) == 0x00000010)) {
-                rowDatas_ = new java.util.ArrayList<RowData>();
+                rowDatas_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.RowData>();
                 mutable_bitField0_ |= 0x00000010;
               }
-              rowDatas_.add(input.readMessage(RowData.PARSER, extensionRegistry));
+              rowDatas_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.RowData.parser(), extensionRegistry));
               break;
             }
             case 106: {
               if (!((mutable_bitField0_ & 0x00000020) == 0x00000020)) {
-                props_ = new java.util.ArrayList<Pair>();
+                props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>();
                 mutable_bitField0_ |= 0x00000020;
               }
-              props_.add(input.readMessage(Pair.PARSER, extensionRegistry));
+              props_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Pair.parser(), extensionRegistry));
               break;
             }
             case 114: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000010;
-              ddlSchemaName_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              ddlSchemaName_ = s;
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
               break;
             }
           }
@@ -7982,7 +8213,7 @@ public final class CanalEntry {
         throw e.setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
+            e).setUnfinishedMessage(this);
       } finally {
         if (((mutable_bitField0_ & 0x00000010) == 0x00000010)) {
           rowDatas_ = java.util.Collections.unmodifiableList(rowDatas_);
@@ -7996,148 +8227,172 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor;
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor;
     }
 
-    protected FieldAccessorTable
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_fieldAccessorTable
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              RowChange.class, Builder.class);
-    }
-
-    public static com.google.protobuf.Parser<RowChange> PARSER =
-        new com.google.protobuf.AbstractParser<RowChange>() {
-      public RowChange parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new RowChange(input, extensionRegistry);
-      }
-    };
-
-    @Override
-    public com.google.protobuf.Parser<RowChange> getParserForType() {
-      return PARSER;
+              com.alibaba.otter.canal.protocol.CanalEntry.RowChange.class, com.alibaba.otter.canal.protocol.CanalEntry.RowChange.Builder.class);
     }
 
     private int bitField0_;
+    private int eventTypePresentCase_ = 0;
+    private java.lang.Object eventTypePresent_;
+    public enum EventTypePresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      EVENTTYPE(2),
+      EVENTTYPEPRESENT_NOT_SET(0);
+      private final int value;
+      private EventTypePresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static EventTypePresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static EventTypePresentCase forNumber(int value) {
+        switch (value) {
+          case 2: return EVENTTYPE;
+          case 0: return EVENTTYPEPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public EventTypePresentCase
+    getEventTypePresentCase() {
+      return EventTypePresentCase.forNumber(
+          eventTypePresentCase_);
+    }
+
+    private int isDdlPresentCase_ = 0;
+    private java.lang.Object isDdlPresent_;
+    public enum IsDdlPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      ISDDL(10),
+      ISDDLPRESENT_NOT_SET(0);
+      private final int value;
+      private IsDdlPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static IsDdlPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static IsDdlPresentCase forNumber(int value) {
+        switch (value) {
+          case 10: return ISDDL;
+          case 0: return ISDDLPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public IsDdlPresentCase
+    getIsDdlPresentCase() {
+      return IsDdlPresentCase.forNumber(
+          isDdlPresentCase_);
+    }
+
     public static final int TABLEID_FIELD_NUMBER = 1;
     private long tableId_;
     /**
-     * <code>optional int64 tableId = 1;</code>
-     *
      * <pre>
      **tableId,由数据库产生*
      * </pre>
-     */
-    public boolean hasTableId() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
-    }
-    /**
-     * <code>optional int64 tableId = 1;</code>
      *
-     * <pre>
-     **tableId,由数据库产生*
-     * </pre>
+     * <code>int64 tableId = 1;</code>
      */
     public long getTableId() {
       return tableId_;
     }
 
     public static final int EVENTTYPE_FIELD_NUMBER = 2;
-    private EventType eventType_;
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 2 [default = UPDATE];</code>
-     *
-     * <pre>
-     **数据变更类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
      */
-    public boolean hasEventType() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
+    public int getEventTypeValue() {
+      if (eventTypePresentCase_ == 2) {
+        return (java.lang.Integer) eventTypePresent_;
+      }
+      return 0;
     }
     /**
-     * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 2 [default = UPDATE];</code>
-     *
-     * <pre>
-     **数据变更类型*
-     * </pre>
+     * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
      */
-    public EventType getEventType() {
-      return eventType_;
+    public com.alibaba.otter.canal.protocol.CanalEntry.EventType getEventType() {
+      if (eventTypePresentCase_ == 2) {
+        @SuppressWarnings("deprecation")
+        com.alibaba.otter.canal.protocol.CanalEntry.EventType result = com.alibaba.otter.canal.protocol.CanalEntry.EventType.valueOf(
+            (java.lang.Integer) eventTypePresent_);
+        return result == null ? com.alibaba.otter.canal.protocol.CanalEntry.EventType.UNRECOGNIZED : result;
+      }
+      return EventType.UPDATE;
     }
 
     public static final int ISDDL_FIELD_NUMBER = 10;
-    private boolean isDdl_;
     /**
-     * <code>optional bool isDdl = 10 [default = false];</code>
-     *
-     * <pre>
-     ** 标识是否是ddl语句  *
-     * </pre>
-     */
-    public boolean hasIsDdl() {
-      return ((bitField0_ & 0x00000004) == 0x00000004);
-    }
-    /**
-     * <code>optional bool isDdl = 10 [default = false];</code>
-     *
-     * <pre>
-     ** 标识是否是ddl语句  *
-     * </pre>
+     * <code>bool isDdl = 10;</code>
      */
     public boolean getIsDdl() {
-      return isDdl_;
+      if (isDdlPresentCase_ == 10) {
+        return (java.lang.Boolean) isDdlPresent_;
+      }
+      return false;
     }
 
     public static final int SQL_FIELD_NUMBER = 11;
-    private Object sql_;
+    private volatile java.lang.Object sql_;
     /**
-     * <code>optional string sql = 11;</code>
-     *
      * <pre>
      ** ddl/query的sql语句  *
      * </pre>
-     */
-    public boolean hasSql() {
-      return ((bitField0_ & 0x00000008) == 0x00000008);
-    }
-    /**
-     * <code>optional string sql = 11;</code>
      *
-     * <pre>
-     ** ddl/query的sql语句  *
-     * </pre>
+     * <code>string sql = 11;</code>
      */
-    public String getSql() {
-      Object ref = sql_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getSql() {
+      java.lang.Object ref = sql_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          sql_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        sql_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string sql = 11;</code>
-     *
      * <pre>
      ** ddl/query的sql语句  *
      * </pre>
+     *
+     * <code>string sql = 11;</code>
      */
     public com.google.protobuf.ByteString
         getSqlBytes() {
-      Object ref = sql_;
-      if (ref instanceof String) {
+      java.lang.Object ref = sql_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         sql_ = b;
         return b;
       } else {
@@ -8146,162 +8401,150 @@ public final class CanalEntry {
     }
 
     public static final int ROWDATAS_FIELD_NUMBER = 12;
-    private java.util.List<RowData> rowDatas_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.RowData> rowDatas_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
-    public java.util.List<RowData> getRowDatasList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.RowData> getRowDatasList() {
       return rowDatas_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
-    public java.util.List<? extends RowDataOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder> 
         getRowDatasOrBuilderList() {
       return rowDatas_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
     public int getRowDatasCount() {
       return rowDatas_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
-    public RowData getRowDatas(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.RowData getRowDatas(int index) {
       return rowDatas_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-     *
      * <pre>
      ** 一次数据库变更可能存在多行  *
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
      */
-    public RowDataOrBuilder getRowDatasOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder getRowDatasOrBuilder(
         int index) {
       return rowDatas_.get(index);
     }
 
     public static final int PROPS_FIELD_NUMBER = 13;
-    private java.util.List<Pair> props_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
-    public java.util.List<Pair> getPropsList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
-    public java.util.List<? extends PairOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
     public int getPropsCount() {
       return props_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
-    public Pair getProps(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
       return props_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
      */
-    public PairOrBuilder getPropsOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
         int index) {
       return props_.get(index);
     }
 
     public static final int DDLSCHEMANAME_FIELD_NUMBER = 14;
-    private Object ddlSchemaName_;
+    private volatile java.lang.Object ddlSchemaName_;
     /**
-     * <code>optional string ddlSchemaName = 14;</code>
-     *
      * <pre>
      ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
      * </pre>
-     */
-    public boolean hasDdlSchemaName() {
-      return ((bitField0_ & 0x00000010) == 0x00000010);
-    }
-    /**
-     * <code>optional string ddlSchemaName = 14;</code>
      *
-     * <pre>
-     ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
-     * </pre>
+     * <code>string ddlSchemaName = 14;</code>
      */
-    public String getDdlSchemaName() {
-      Object ref = ddlSchemaName_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getDdlSchemaName() {
+      java.lang.Object ref = ddlSchemaName_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          ddlSchemaName_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        ddlSchemaName_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string ddlSchemaName = 14;</code>
-     *
      * <pre>
      ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
      * </pre>
+     *
+     * <code>string ddlSchemaName = 14;</code>
      */
     public com.google.protobuf.ByteString
         getDdlSchemaNameBytes() {
-      Object ref = ddlSchemaName_;
-      if (ref instanceof String) {
+      java.lang.Object ref = ddlSchemaName_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         ddlSchemaName_ = b;
         return b;
       } else {
@@ -8309,16 +8552,8 @@ public final class CanalEntry {
       }
     }
 
-    private void initFields() {
-      tableId_ = 0L;
-      eventType_ = EventType.UPDATE;
-      isDdl_ = false;
-      sql_ = "";
-      rowDatas_ = java.util.Collections.emptyList();
-      props_ = java.util.Collections.emptyList();
-      ddlSchemaName_ = "";
-    }
     private byte memoizedIsInitialized = -1;
+    @java.lang.Override
     public final boolean isInitialized() {
       byte isInitialized = memoizedIsInitialized;
       if (isInitialized == 1) return true;
@@ -8328,20 +8563,21 @@ public final class CanalEntry {
       return true;
     }
 
+    @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (tableId_ != 0L) {
         output.writeInt64(1, tableId_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeEnum(2, eventType_.getNumber());
+      if (eventTypePresentCase_ == 2) {
+        output.writeEnum(2, ((java.lang.Integer) eventTypePresent_));
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        output.writeBool(10, isDdl_);
+      if (isDdlPresentCase_ == 10) {
+        output.writeBool(
+            10, (boolean)((java.lang.Boolean) isDdlPresent_));
       }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
-        output.writeBytes(11, getSqlBytes());
+      if (!getSqlBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 11, sql_);
       }
       for (int i = 0; i < rowDatas_.size(); i++) {
         output.writeMessage(12, rowDatas_.get(i));
@@ -8349,33 +8585,33 @@ public final class CanalEntry {
       for (int i = 0; i < props_.size(); i++) {
         output.writeMessage(13, props_.get(i));
       }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
-        output.writeBytes(14, getDdlSchemaNameBytes());
+      if (!getDdlSchemaNameBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 14, ddlSchemaName_);
       }
-      getUnknownFields().writeTo(output);
+      unknownFields.writeTo(output);
     }
 
-    private int memoizedSerializedSize = -1;
+    @java.lang.Override
     public int getSerializedSize() {
-      int size = memoizedSerializedSize;
+      int size = memoizedSize;
       if (size != -1) return size;
 
       size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (tableId_ != 0L) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt64Size(1, tableId_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+      if (eventTypePresentCase_ == 2) {
         size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(2, eventType_.getNumber());
+          .computeEnumSize(2, ((java.lang.Integer) eventTypePresent_));
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+      if (isDdlPresentCase_ == 10) {
         size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(10, isDdl_);
+          .computeBoolSize(
+              10, (boolean)((java.lang.Boolean) isDdlPresent_));
       }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(11, getSqlBytes());
+      if (!getSqlBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(11, sql_);
       }
       for (int i = 0; i < rowDatas_.size(); i++) {
         size += com.google.protobuf.CodedOutputStream
@@ -8385,109 +8621,217 @@ public final class CanalEntry {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(13, props_.get(i));
       }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(14, getDdlSchemaNameBytes());
+      if (!getDdlSchemaNameBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(14, ddlSchemaName_);
       }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
       return size;
     }
 
-    private static final long serialVersionUID = 0L;
-    @Override
-    protected Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalEntry.RowChange)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalEntry.RowChange other = (com.alibaba.otter.canal.protocol.CanalEntry.RowChange) obj;
+
+      boolean result = true;
+      result = result && (getTableId()
+          == other.getTableId());
+      result = result && getSql()
+          .equals(other.getSql());
+      result = result && getRowDatasList()
+          .equals(other.getRowDatasList());
+      result = result && getPropsList()
+          .equals(other.getPropsList());
+      result = result && getDdlSchemaName()
+          .equals(other.getDdlSchemaName());
+      result = result && getEventTypePresentCase().equals(
+          other.getEventTypePresentCase());
+      if (!result) return false;
+      switch (eventTypePresentCase_) {
+        case 2:
+          result = result && getEventTypeValue()
+              == other.getEventTypeValue();
+          break;
+        case 0:
+        default:
+      }
+      result = result && getIsDdlPresentCase().equals(
+          other.getIsDdlPresentCase());
+      if (!result) return false;
+      switch (isDdlPresentCase_) {
+        case 10:
+          result = result && (getIsDdl()
+              == other.getIsDdl());
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
     }
 
-    public static RowChange parseFrom(
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + TABLEID_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getTableId());
+      hash = (37 * hash) + SQL_FIELD_NUMBER;
+      hash = (53 * hash) + getSql().hashCode();
+      if (getRowDatasCount() > 0) {
+        hash = (37 * hash) + ROWDATAS_FIELD_NUMBER;
+        hash = (53 * hash) + getRowDatasList().hashCode();
+      }
+      if (getPropsCount() > 0) {
+        hash = (37 * hash) + PROPS_FIELD_NUMBER;
+        hash = (53 * hash) + getPropsList().hashCode();
+      }
+      hash = (37 * hash) + DDLSCHEMANAME_FIELD_NUMBER;
+      hash = (53 * hash) + getDdlSchemaName().hashCode();
+      switch (eventTypePresentCase_) {
+        case 2:
+          hash = (37 * hash) + EVENTTYPE_FIELD_NUMBER;
+          hash = (53 * hash) + getEventTypeValue();
+          break;
+        case 0:
+        default:
+      }
+      switch (isDdlPresentCase_) {
+        case 10:
+          hash = (37 * hash) + ISDDL_FIELD_NUMBER;
+          hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
+              getIsDdl());
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static RowChange parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static RowChange parseFrom(byte[] data)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static RowChange parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static RowChange parseFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static RowChange parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static RowChange parseDelimitedFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
     }
-    public static RowChange parseDelimitedFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static RowChange parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static RowChange parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
-    public static Builder newBuilder() { return Builder.create(); }
+    @java.lang.Override
     public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(RowChange prototype) {
-      return newBuilder().mergeFrom(prototype);
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalEntry.RowChange prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
     }
-    public Builder toBuilder() { return newBuilder(this); }
 
-    @Override
+    @java.lang.Override
     protected Builder newBuilderForType(
-        BuilderParent parent) {
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.RowChange}
-     *
      * <pre>
      **message row 每行变更数据的数据结构*
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.RowChange}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.RowChange)
-        RowChangeOrBuilder {
+        com.alibaba.otter.canal.protocol.CanalEntry.RowChangeOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor;
       }
 
-      protected FieldAccessorTable
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_fieldAccessorTable
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                RowChange.class, Builder.class);
+                com.alibaba.otter.canal.protocol.CanalEntry.RowChange.class, com.alibaba.otter.canal.protocol.CanalEntry.RowChange.Builder.class);
       }
 
       // Construct using com.alibaba.otter.canal.protocol.CanalEntry.RowChange.newBuilder()
@@ -8496,30 +8840,24 @@ public final class CanalEntry {
       }
 
       private Builder(
-          BuilderParent parent) {
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
         super(parent);
         maybeForceBuilderInitialization();
       }
       private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
           getRowDatasFieldBuilder();
           getPropsFieldBuilder();
         }
       }
-      private static Builder create() {
-        return new Builder();
-      }
-
+      @java.lang.Override
       public Builder clear() {
         super.clear();
         tableId_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000001);
-        eventType_ = EventType.UPDATE;
-        bitField0_ = (bitField0_ & ~0x00000002);
-        isDdl_ = false;
-        bitField0_ = (bitField0_ & ~0x00000004);
+
         sql_ = "";
-        bitField0_ = (bitField0_ & ~0x00000008);
+
         if (rowDatasBuilder_ == null) {
           rowDatas_ = java.util.Collections.emptyList();
           bitField0_ = (bitField0_ & ~0x00000010);
@@ -8533,49 +8871,45 @@ public final class CanalEntry {
           propsBuilder_.clear();
         }
         ddlSchemaName_ = "";
-        bitField0_ = (bitField0_ & ~0x00000040);
+
+        eventTypePresentCase_ = 0;
+        eventTypePresent_ = null;
+        isDdlPresentCase_ = 0;
+        isDdlPresent_ = null;
         return this;
       }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
+      @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor;
       }
 
-      public RowChange getDefaultInstanceForType() {
-        return RowChange.getDefaultInstance();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowChange getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalEntry.RowChange.getDefaultInstance();
       }
 
-      public RowChange build() {
-        RowChange result = buildPartial();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowChange build() {
+        com.alibaba.otter.canal.protocol.CanalEntry.RowChange result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
         return result;
       }
 
-      public RowChange buildPartial() {
-        RowChange result = new RowChange(this);
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowChange buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalEntry.RowChange result = new com.alibaba.otter.canal.protocol.CanalEntry.RowChange(this);
         int from_bitField0_ = bitField0_;
         int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
-        }
         result.tableId_ = tableId_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
+        if (eventTypePresentCase_ == 2) {
+          result.eventTypePresent_ = eventTypePresent_;
         }
-        result.eventType_ = eventType_;
-        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-          to_bitField0_ |= 0x00000004;
-        }
-        result.isDdl_ = isDdl_;
-        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-          to_bitField0_ |= 0x00000008;
+        if (isDdlPresentCase_ == 10) {
+          result.isDdlPresent_ = isDdlPresent_;
         }
         result.sql_ = sql_;
         if (rowDatasBuilder_ == null) {
@@ -8596,37 +8930,62 @@ public final class CanalEntry {
         } else {
           result.props_ = propsBuilder_.build();
         }
-        if (((from_bitField0_ & 0x00000040) == 0x00000040)) {
-          to_bitField0_ |= 0x00000010;
-        }
         result.ddlSchemaName_ = ddlSchemaName_;
         result.bitField0_ = to_bitField0_;
+        result.eventTypePresentCase_ = eventTypePresentCase_;
+        result.isDdlPresentCase_ = isDdlPresentCase_;
         onBuilt();
         return result;
       }
 
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof RowChange) {
-          return mergeFrom((RowChange)other);
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalEntry.RowChange) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalEntry.RowChange)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(RowChange other) {
-        if (other == RowChange.getDefaultInstance()) return this;
-        if (other.hasTableId()) {
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalEntry.RowChange other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalEntry.RowChange.getDefaultInstance()) return this;
+        if (other.getTableId() != 0L) {
           setTableId(other.getTableId());
         }
-        if (other.hasEventType()) {
-          setEventType(other.getEventType());
-        }
-        if (other.hasIsDdl()) {
-          setIsDdl(other.getIsDdl());
-        }
-        if (other.hasSql()) {
-          bitField0_ |= 0x00000008;
+        if (!other.getSql().isEmpty()) {
           sql_ = other.sql_;
           onChanged();
         }
@@ -8649,7 +9008,7 @@ public final class CanalEntry {
               rowDatas_ = other.rowDatas_;
               bitField0_ = (bitField0_ & ~0x00000010);
               rowDatasBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getRowDatasFieldBuilder() : null;
             } else {
               rowDatasBuilder_.addAllMessages(other.rowDatas_);
@@ -8675,36 +9034,56 @@ public final class CanalEntry {
               props_ = other.props_;
               bitField0_ = (bitField0_ & ~0x00000020);
               propsBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getPropsFieldBuilder() : null;
             } else {
               propsBuilder_.addAllMessages(other.props_);
             }
           }
         }
-        if (other.hasDdlSchemaName()) {
-          bitField0_ |= 0x00000040;
+        if (!other.getDdlSchemaName().isEmpty()) {
           ddlSchemaName_ = other.ddlSchemaName_;
           onChanged();
         }
-        this.mergeUnknownFields(other.getUnknownFields());
+        switch (other.getEventTypePresentCase()) {
+          case EVENTTYPE: {
+            setEventTypeValue(other.getEventTypeValue());
+            break;
+          }
+          case EVENTTYPEPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        switch (other.getIsDdlPresentCase()) {
+          case ISDDL: {
+            setIsDdl(other.getIsDdl());
+            break;
+          }
+          case ISDDLPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
         return this;
       }
 
+      @java.lang.Override
       public final boolean isInitialized() {
         return true;
       }
 
+      @java.lang.Override
       public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        RowChange parsedMessage = null;
+        com.alibaba.otter.canal.protocol.CanalEntry.RowChange parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (RowChange) e.getUnfinishedMessage();
-          throw e;
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalEntry.RowChange) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
             mergeFrom(parsedMessage);
@@ -8712,201 +9091,194 @@ public final class CanalEntry {
         }
         return this;
       }
+      private int eventTypePresentCase_ = 0;
+      private java.lang.Object eventTypePresent_;
+      public EventTypePresentCase
+          getEventTypePresentCase() {
+        return EventTypePresentCase.forNumber(
+            eventTypePresentCase_);
+      }
+
+      public Builder clearEventTypePresent() {
+        eventTypePresentCase_ = 0;
+        eventTypePresent_ = null;
+        onChanged();
+        return this;
+      }
+
+      private int isDdlPresentCase_ = 0;
+      private java.lang.Object isDdlPresent_;
+      public IsDdlPresentCase
+          getIsDdlPresentCase() {
+        return IsDdlPresentCase.forNumber(
+            isDdlPresentCase_);
+      }
+
+      public Builder clearIsDdlPresent() {
+        isDdlPresentCase_ = 0;
+        isDdlPresent_ = null;
+        onChanged();
+        return this;
+      }
+
       private int bitField0_;
 
       private long tableId_ ;
       /**
-       * <code>optional int64 tableId = 1;</code>
-       *
        * <pre>
        **tableId,由数据库产生*
        * </pre>
-       */
-      public boolean hasTableId() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>optional int64 tableId = 1;</code>
        *
-       * <pre>
-       **tableId,由数据库产生*
-       * </pre>
+       * <code>int64 tableId = 1;</code>
        */
       public long getTableId() {
         return tableId_;
       }
       /**
-       * <code>optional int64 tableId = 1;</code>
-       *
        * <pre>
        **tableId,由数据库产生*
        * </pre>
+       *
+       * <code>int64 tableId = 1;</code>
        */
       public Builder setTableId(long value) {
-        bitField0_ |= 0x00000001;
+        
         tableId_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int64 tableId = 1;</code>
-       *
        * <pre>
        **tableId,由数据库产生*
        * </pre>
+       *
+       * <code>int64 tableId = 1;</code>
        */
       public Builder clearTableId() {
-        bitField0_ = (bitField0_ & ~0x00000001);
+        
         tableId_ = 0L;
         onChanged();
         return this;
       }
 
-      private EventType eventType_ = EventType.UPDATE;
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 2 [default = UPDATE];</code>
-       *
-       * <pre>
-       **数据变更类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
        */
-      public boolean hasEventType() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
+      public int getEventTypeValue() {
+        if (eventTypePresentCase_ == 2) {
+          return ((java.lang.Integer) eventTypePresent_).intValue();
+        }
+        return 0;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 2 [default = UPDATE];</code>
-       *
-       * <pre>
-       **数据变更类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
        */
-      public EventType getEventType() {
-        return eventType_;
+      public Builder setEventTypeValue(int value) {
+        eventTypePresentCase_ = 2;
+        eventTypePresent_ = value;
+        onChanged();
+        return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 2 [default = UPDATE];</code>
-       *
-       * <pre>
-       **数据变更类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
        */
-      public Builder setEventType(EventType value) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.EventType getEventType() {
+        if (eventTypePresentCase_ == 2) {
+          @SuppressWarnings("deprecation")
+          com.alibaba.otter.canal.protocol.CanalEntry.EventType result = com.alibaba.otter.canal.protocol.CanalEntry.EventType.valueOf(
+              (java.lang.Integer) eventTypePresent_);
+          return result == null ? com.alibaba.otter.canal.protocol.CanalEntry.EventType.UNRECOGNIZED : result;
+        }
+        return com.alibaba.otter.canal.protocol.CanalEntry.EventType.EVENTTYPECOMPATIBLEPROTO2;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
+       */
+      public Builder setEventType(com.alibaba.otter.canal.protocol.CanalEntry.EventType value) {
         if (value == null) {
           throw new NullPointerException();
         }
-        bitField0_ |= 0x00000002;
-        eventType_ = value;
+        eventTypePresentCase_ = 2;
+        eventTypePresent_ = value.getNumber();
         onChanged();
         return this;
       }
       /**
-       * <code>optional .com.alibaba.otter.canal.protocol.EventType eventType = 2 [default = UPDATE];</code>
-       *
-       * <pre>
-       **数据变更类型*
-       * </pre>
+       * <code>.com.alibaba.otter.canal.protocol.EventType eventType = 2;</code>
        */
       public Builder clearEventType() {
-        bitField0_ = (bitField0_ & ~0x00000002);
-        eventType_ = EventType.UPDATE;
-        onChanged();
+        if (eventTypePresentCase_ == 2) {
+          eventTypePresentCase_ = 0;
+          eventTypePresent_ = null;
+          onChanged();
+        }
         return this;
       }
 
-      private boolean isDdl_ ;
       /**
-       * <code>optional bool isDdl = 10 [default = false];</code>
-       *
-       * <pre>
-       ** 标识是否是ddl语句  *
-       * </pre>
-       */
-      public boolean hasIsDdl() {
-        return ((bitField0_ & 0x00000004) == 0x00000004);
-      }
-      /**
-       * <code>optional bool isDdl = 10 [default = false];</code>
-       *
-       * <pre>
-       ** 标识是否是ddl语句  *
-       * </pre>
+       * <code>bool isDdl = 10;</code>
        */
       public boolean getIsDdl() {
-        return isDdl_;
+        if (isDdlPresentCase_ == 10) {
+          return (java.lang.Boolean) isDdlPresent_;
+        }
+        return false;
       }
       /**
-       * <code>optional bool isDdl = 10 [default = false];</code>
-       *
-       * <pre>
-       ** 标识是否是ddl语句  *
-       * </pre>
+       * <code>bool isDdl = 10;</code>
        */
       public Builder setIsDdl(boolean value) {
-        bitField0_ |= 0x00000004;
-        isDdl_ = value;
+        isDdlPresentCase_ = 10;
+        isDdlPresent_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional bool isDdl = 10 [default = false];</code>
-       *
-       * <pre>
-       ** 标识是否是ddl语句  *
-       * </pre>
+       * <code>bool isDdl = 10;</code>
        */
       public Builder clearIsDdl() {
-        bitField0_ = (bitField0_ & ~0x00000004);
-        isDdl_ = false;
-        onChanged();
+        if (isDdlPresentCase_ == 10) {
+          isDdlPresentCase_ = 0;
+          isDdlPresent_ = null;
+          onChanged();
+        }
         return this;
       }
 
-      private Object sql_ = "";
+      private java.lang.Object sql_ = "";
       /**
-       * <code>optional string sql = 11;</code>
-       *
        * <pre>
        ** ddl/query的sql语句  *
        * </pre>
-       */
-      public boolean hasSql() {
-        return ((bitField0_ & 0x00000008) == 0x00000008);
-      }
-      /**
-       * <code>optional string sql = 11;</code>
        *
-       * <pre>
-       ** ddl/query的sql语句  *
-       * </pre>
+       * <code>string sql = 11;</code>
        */
-      public String getSql() {
-        Object ref = sql_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getSql() {
+        java.lang.Object ref = sql_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            sql_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          sql_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string sql = 11;</code>
-       *
        * <pre>
        ** ddl/query的sql语句  *
        * </pre>
+       *
+       * <code>string sql = 11;</code>
        */
       public com.google.protobuf.ByteString
           getSqlBytes() {
-        Object ref = sql_;
+        java.lang.Object ref = sql_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           sql_ = b;
           return b;
         } else {
@@ -8914,73 +9286,74 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string sql = 11;</code>
-       *
        * <pre>
        ** ddl/query的sql语句  *
        * </pre>
+       *
+       * <code>string sql = 11;</code>
        */
       public Builder setSql(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000008;
+  
         sql_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string sql = 11;</code>
-       *
        * <pre>
        ** ddl/query的sql语句  *
        * </pre>
+       *
+       * <code>string sql = 11;</code>
        */
       public Builder clearSql() {
-        bitField0_ = (bitField0_ & ~0x00000008);
+        
         sql_ = getDefaultInstance().getSql();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string sql = 11;</code>
-       *
        * <pre>
        ** ddl/query的sql语句  *
        * </pre>
+       *
+       * <code>string sql = 11;</code>
        */
       public Builder setSqlBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000008;
+  checkByteStringIsUtf8(value);
+        
         sql_ = value;
         onChanged();
         return this;
       }
 
-      private java.util.List<RowData> rowDatas_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.RowData> rowDatas_ =
         java.util.Collections.emptyList();
       private void ensureRowDatasIsMutable() {
         if (!((bitField0_ & 0x00000010) == 0x00000010)) {
-          rowDatas_ = new java.util.ArrayList<RowData>(rowDatas_);
+          rowDatas_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.RowData>(rowDatas_);
           bitField0_ |= 0x00000010;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          RowData, RowData.Builder, RowDataOrBuilder> rowDatasBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.RowData, com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder, com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder> rowDatasBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public java.util.List<RowData> getRowDatasList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.RowData> getRowDatasList() {
         if (rowDatasBuilder_ == null) {
           return java.util.Collections.unmodifiableList(rowDatas_);
         } else {
@@ -8988,11 +9361,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public int getRowDatasCount() {
         if (rowDatasBuilder_ == null) {
@@ -9002,13 +9375,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public RowData getRowDatas(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowData getRowDatas(int index) {
         if (rowDatasBuilder_ == null) {
           return rowDatas_.get(index);
         } else {
@@ -9016,14 +9389,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public Builder setRowDatas(
-          int index, RowData value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.RowData value) {
         if (rowDatasBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -9037,14 +9410,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public Builder setRowDatas(
-          int index, RowData.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder builderForValue) {
         if (rowDatasBuilder_ == null) {
           ensureRowDatasIsMutable();
           rowDatas_.set(index, builderForValue.build());
@@ -9055,13 +9428,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public Builder addRowDatas(RowData value) {
+      public Builder addRowDatas(com.alibaba.otter.canal.protocol.CanalEntry.RowData value) {
         if (rowDatasBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -9075,14 +9448,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public Builder addRowDatas(
-          int index, RowData value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.RowData value) {
         if (rowDatasBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -9096,14 +9469,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public Builder addRowDatas(
-          RowData.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder builderForValue) {
         if (rowDatasBuilder_ == null) {
           ensureRowDatasIsMutable();
           rowDatas_.add(builderForValue.build());
@@ -9114,14 +9487,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public Builder addRowDatas(
-          int index, RowData.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder builderForValue) {
         if (rowDatasBuilder_ == null) {
           ensureRowDatasIsMutable();
           rowDatas_.add(index, builderForValue.build());
@@ -9132,14 +9505,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public Builder addAllRowDatas(
-          Iterable<? extends RowData> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.RowData> values) {
         if (rowDatasBuilder_ == null) {
           ensureRowDatasIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -9151,11 +9524,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public Builder clearRowDatas() {
         if (rowDatasBuilder_ == null) {
@@ -9168,11 +9541,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
       public Builder removeRowDatas(int index) {
         if (rowDatasBuilder_ == null) {
@@ -9185,24 +9558,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public RowData.Builder getRowDatasBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder getRowDatasBuilder(
           int index) {
         return getRowDatasFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public RowDataOrBuilder getRowDatasOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder getRowDatasOrBuilder(
           int index) {
         if (rowDatasBuilder_ == null) {
           return rowDatas_.get(index);  } else {
@@ -9210,13 +9583,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public java.util.List<? extends RowDataOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder> 
            getRowDatasOrBuilderList() {
         if (rowDatasBuilder_ != null) {
           return rowDatasBuilder_.getMessageOrBuilderList();
@@ -9225,45 +9598,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public RowData.Builder addRowDatasBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder addRowDatasBuilder() {
         return getRowDatasFieldBuilder().addBuilder(
-            RowData.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.RowData.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public RowData.Builder addRowDatasBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder addRowDatasBuilder(
           int index) {
         return getRowDatasFieldBuilder().addBuilder(
-            index, RowData.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.RowData.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
-       *
        * <pre>
        ** 一次数据库变更可能存在多行  *
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.RowData rowDatas = 12;</code>
        */
-      public java.util.List<RowData.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder> 
            getRowDatasBuilderList() {
         return getRowDatasFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          RowData, RowData.Builder, RowDataOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.RowData, com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder, com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder> 
           getRowDatasFieldBuilder() {
         if (rowDatasBuilder_ == null) {
-          rowDatasBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              RowData, RowData.Builder, RowDataOrBuilder>(
+          rowDatasBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.RowData, com.alibaba.otter.canal.protocol.CanalEntry.RowData.Builder, com.alibaba.otter.canal.protocol.CanalEntry.RowDataOrBuilder>(
                   rowDatas_,
                   ((bitField0_ & 0x00000010) == 0x00000010),
                   getParentForChildren(),
@@ -9273,26 +9646,26 @@ public final class CanalEntry {
         return rowDatasBuilder_;
       }
 
-      private java.util.List<Pair> props_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_ =
         java.util.Collections.emptyList();
       private void ensurePropsIsMutable() {
         if (!((bitField0_ & 0x00000020) == 0x00000020)) {
-          props_ = new java.util.ArrayList<Pair>(props_);
+          props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>(props_);
           bitField0_ |= 0x00000020;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder> propsBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> propsBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public java.util.List<Pair> getPropsList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
         if (propsBuilder_ == null) {
           return java.util.Collections.unmodifiableList(props_);
         } else {
@@ -9300,11 +9673,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public int getPropsCount() {
         if (propsBuilder_ == null) {
@@ -9314,13 +9687,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public Pair getProps(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);
         } else {
@@ -9328,14 +9701,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public Builder setProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -9349,14 +9722,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public Builder setProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.set(index, builderForValue.build());
@@ -9367,13 +9740,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public Builder addProps(Pair value) {
+      public Builder addProps(com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -9387,14 +9760,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public Builder addProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -9408,14 +9781,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public Builder addProps(
-          Pair.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(builderForValue.build());
@@ -9426,14 +9799,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public Builder addProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(index, builderForValue.build());
@@ -9444,14 +9817,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public Builder addAllProps(
-          Iterable<? extends Pair> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.Pair> values) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -9463,11 +9836,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public Builder clearProps() {
         if (propsBuilder_ == null) {
@@ -9480,11 +9853,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
       public Builder removeProps(int index) {
         if (propsBuilder_ == null) {
@@ -9497,24 +9870,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public Pair.Builder getPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder getPropsBuilder(
           int index) {
         return getPropsFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public PairOrBuilder getPropsOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
           int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);  } else {
@@ -9522,13 +9895,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public java.util.List<? extends PairOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
            getPropsOrBuilderList() {
         if (propsBuilder_ != null) {
           return propsBuilder_.getMessageOrBuilderList();
@@ -9537,45 +9910,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public Pair.Builder addPropsBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder() {
         return getPropsFieldBuilder().addBuilder(
-            Pair.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public Pair.Builder addPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder(
           int index) {
         return getPropsFieldBuilder().addBuilder(
-            index, Pair.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 13;</code>
        */
-      public java.util.List<Pair.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder> 
            getPropsBuilderList() {
         return getPropsFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
           getPropsFieldBuilder() {
         if (propsBuilder_ == null) {
-          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              Pair, Pair.Builder, PairOrBuilder>(
+          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder>(
                   props_,
                   ((bitField0_ & 0x00000020) == 0x00000020),
                   getParentForChildren(),
@@ -9585,52 +9958,40 @@ public final class CanalEntry {
         return propsBuilder_;
       }
 
-      private Object ddlSchemaName_ = "";
+      private java.lang.Object ddlSchemaName_ = "";
       /**
-       * <code>optional string ddlSchemaName = 14;</code>
-       *
        * <pre>
        ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
        * </pre>
-       */
-      public boolean hasDdlSchemaName() {
-        return ((bitField0_ & 0x00000040) == 0x00000040);
-      }
-      /**
-       * <code>optional string ddlSchemaName = 14;</code>
        *
-       * <pre>
-       ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
-       * </pre>
+       * <code>string ddlSchemaName = 14;</code>
        */
-      public String getDdlSchemaName() {
-        Object ref = ddlSchemaName_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getDdlSchemaName() {
+        java.lang.Object ref = ddlSchemaName_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            ddlSchemaName_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          ddlSchemaName_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string ddlSchemaName = 14;</code>
-       *
        * <pre>
        ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
        * </pre>
+       *
+       * <code>string ddlSchemaName = 14;</code>
        */
       public com.google.protobuf.ByteString
           getDdlSchemaNameBytes() {
-        Object ref = ddlSchemaName_;
+        java.lang.Object ref = ddlSchemaName_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           ddlSchemaName_ = b;
           return b;
         } else {
@@ -9638,62 +9999,104 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string ddlSchemaName = 14;</code>
-       *
        * <pre>
        ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
        * </pre>
+       *
+       * <code>string ddlSchemaName = 14;</code>
        */
       public Builder setDdlSchemaName(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000040;
+  
         ddlSchemaName_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string ddlSchemaName = 14;</code>
-       *
        * <pre>
        ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
        * </pre>
+       *
+       * <code>string ddlSchemaName = 14;</code>
        */
       public Builder clearDdlSchemaName() {
-        bitField0_ = (bitField0_ & ~0x00000040);
+        
         ddlSchemaName_ = getDefaultInstance().getDdlSchemaName();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string ddlSchemaName = 14;</code>
-       *
        * <pre>
        ** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  *
        * </pre>
+       *
+       * <code>string ddlSchemaName = 14;</code>
        */
       public Builder setDdlSchemaNameBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000040;
+  checkByteStringIsUtf8(value);
+        
         ddlSchemaName_ = value;
         onChanged();
         return this;
       }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
 
       // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.RowChange)
     }
 
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.RowChange)
+    private static final com.alibaba.otter.canal.protocol.CanalEntry.RowChange DEFAULT_INSTANCE;
     static {
-      defaultInstance = new RowChange(true);
-      defaultInstance.initFields();
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalEntry.RowChange();
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.RowChange getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<RowChange>
+        PARSER = new com.google.protobuf.AbstractParser<RowChange>() {
+      @java.lang.Override
+      public RowChange parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new RowChange(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<RowChange> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<RowChange> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalEntry.RowChange getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.RowChange)
   }
 
   public interface TransactionBeginOrBuilder extends
@@ -9701,146 +10104,121 @@ public final class CanalEntry {
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>optional int64 executeTime = 1;</code>
-     *
      * <pre>
      **已废弃，请使用header里的executeTime*
      * </pre>
-     */
-    boolean hasExecuteTime();
-    /**
-     * <code>optional int64 executeTime = 1;</code>
      *
-     * <pre>
-     **已废弃，请使用header里的executeTime*
-     * </pre>
+     * <code>int64 executeTime = 1;</code>
      */
     long getExecuteTime();
 
     /**
-     * <code>optional string transactionId = 2;</code>
-     *
      * <pre>
      **已废弃，Begin里不提供事务id*
      * </pre>
+     *
+     * <code>string transactionId = 2;</code>
      */
-    boolean hasTransactionId();
+    java.lang.String getTransactionId();
     /**
-     * <code>optional string transactionId = 2;</code>
-     *
      * <pre>
      **已废弃，Begin里不提供事务id*
      * </pre>
-     */
-    String getTransactionId();
-    /**
-     * <code>optional string transactionId = 2;</code>
      *
-     * <pre>
-     **已废弃，Begin里不提供事务id*
-     * </pre>
+     * <code>string transactionId = 2;</code>
      */
     com.google.protobuf.ByteString
         getTransactionIdBytes();
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    java.util.List<Pair>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> 
         getPropsList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    Pair getProps(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
     int getPropsCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    java.util.List<? extends PairOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    PairOrBuilder getPropsOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
+        int index);
 
     /**
-     * <code>optional int64 threadId = 4;</code>
-     *
      * <pre>
      **执行的thread Id*
      * </pre>
-     */
-    boolean hasThreadId();
-    /**
-     * <code>optional int64 threadId = 4;</code>
      *
-     * <pre>
-     **执行的thread Id*
-     * </pre>
+     * <code>int64 threadId = 4;</code>
      */
     long getThreadId();
   }
   /**
-   * Protobuf type {@code com.alibaba.otter.canal.protocol.TransactionBegin}
-   *
    * <pre>
    **开始事务的一些信息*
    * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.TransactionBegin}
    */
-  public static final class TransactionBegin extends
-      com.google.protobuf.GeneratedMessage implements
+  public  static final class TransactionBegin extends
+      com.google.protobuf.GeneratedMessageV3 implements
       // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.TransactionBegin)
       TransactionBeginOrBuilder {
+  private static final long serialVersionUID = 0L;
     // Use TransactionBegin.newBuilder() to construct.
-    private TransactionBegin(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    private TransactionBegin(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
-      this.unknownFields = builder.getUnknownFields();
     }
-    private TransactionBegin(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final TransactionBegin defaultInstance;
-    public static TransactionBegin getDefaultInstance() {
-      return defaultInstance;
+    private TransactionBegin() {
+      executeTime_ = 0L;
+      transactionId_ = "";
+      props_ = java.util.Collections.emptyList();
+      threadId_ = 0L;
     }
 
-    public TransactionBegin getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @Override
+    @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
+    getUnknownFields() {
       return this.unknownFields;
     }
     private TransactionBegin(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
       int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
@@ -9852,44 +10230,45 @@ public final class CanalEntry {
             case 0:
               done = true;
               break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
             case 8: {
-              bitField0_ |= 0x00000001;
+
               executeTime_ = input.readInt64();
               break;
             }
             case 18: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000002;
-              transactionId_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              transactionId_ = s;
               break;
             }
             case 26: {
               if (!((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
-                props_ = new java.util.ArrayList<Pair>();
+                props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>();
                 mutable_bitField0_ |= 0x00000004;
               }
-              props_.add(input.readMessage(Pair.PARSER, extensionRegistry));
+              props_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Pair.parser(), extensionRegistry));
               break;
             }
             case 32: {
-              bitField0_ |= 0x00000004;
+
               threadId_ = input.readInt64();
               break;
             }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
           }
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
+            e).setUnfinishedMessage(this);
       } finally {
         if (((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
           props_ = java.util.Collections.unmodifiableList(props_);
@@ -9900,102 +10279,66 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor;
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor;
     }
 
-    protected FieldAccessorTable
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_fieldAccessorTable
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              TransactionBegin.class, Builder.class);
-    }
-
-    public static com.google.protobuf.Parser<TransactionBegin> PARSER =
-        new com.google.protobuf.AbstractParser<TransactionBegin>() {
-      public TransactionBegin parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new TransactionBegin(input, extensionRegistry);
-      }
-    };
-
-    @Override
-    public com.google.protobuf.Parser<TransactionBegin> getParserForType() {
-      return PARSER;
+              com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin.class, com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin.Builder.class);
     }
 
     private int bitField0_;
     public static final int EXECUTETIME_FIELD_NUMBER = 1;
     private long executeTime_;
     /**
-     * <code>optional int64 executeTime = 1;</code>
-     *
      * <pre>
      **已废弃，请使用header里的executeTime*
      * </pre>
-     */
-    public boolean hasExecuteTime() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
-    }
-    /**
-     * <code>optional int64 executeTime = 1;</code>
      *
-     * <pre>
-     **已废弃，请使用header里的executeTime*
-     * </pre>
+     * <code>int64 executeTime = 1;</code>
      */
     public long getExecuteTime() {
       return executeTime_;
     }
 
     public static final int TRANSACTIONID_FIELD_NUMBER = 2;
-    private Object transactionId_;
+    private volatile java.lang.Object transactionId_;
     /**
-     * <code>optional string transactionId = 2;</code>
-     *
      * <pre>
      **已废弃，Begin里不提供事务id*
      * </pre>
-     */
-    public boolean hasTransactionId() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
-    }
-    /**
-     * <code>optional string transactionId = 2;</code>
      *
-     * <pre>
-     **已废弃，Begin里不提供事务id*
-     * </pre>
+     * <code>string transactionId = 2;</code>
      */
-    public String getTransactionId() {
-      Object ref = transactionId_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getTransactionId() {
+      java.lang.Object ref = transactionId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          transactionId_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        transactionId_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string transactionId = 2;</code>
-     *
      * <pre>
      **已废弃，Begin里不提供事务id*
      * </pre>
+     *
+     * <code>string transactionId = 2;</code>
      */
     public com.google.protobuf.ByteString
         getTransactionIdBytes() {
-      Object ref = transactionId_;
-      if (ref instanceof String) {
+      java.lang.Object ref = transactionId_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         transactionId_ = b;
         return b;
       } else {
@@ -10004,56 +10347,56 @@ public final class CanalEntry {
     }
 
     public static final int PROPS_FIELD_NUMBER = 3;
-    private java.util.List<Pair> props_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public java.util.List<Pair> getPropsList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public java.util.List<? extends PairOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
     public int getPropsCount() {
       return props_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public Pair getProps(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
       return props_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public PairOrBuilder getPropsOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
         int index) {
       return props_.get(index);
     }
@@ -10061,33 +10404,18 @@ public final class CanalEntry {
     public static final int THREADID_FIELD_NUMBER = 4;
     private long threadId_;
     /**
-     * <code>optional int64 threadId = 4;</code>
-     *
      * <pre>
      **执行的thread Id*
      * </pre>
-     */
-    public boolean hasThreadId() {
-      return ((bitField0_ & 0x00000004) == 0x00000004);
-    }
-    /**
-     * <code>optional int64 threadId = 4;</code>
      *
-     * <pre>
-     **执行的thread Id*
-     * </pre>
+     * <code>int64 threadId = 4;</code>
      */
     public long getThreadId() {
       return threadId_;
     }
 
-    private void initFields() {
-      executeTime_ = 0L;
-      transactionId_ = "";
-      props_ = java.util.Collections.emptyList();
-      threadId_ = 0L;
-    }
     private byte memoizedIsInitialized = -1;
+    @java.lang.Override
     public final boolean isInitialized() {
       byte isInitialized = memoizedIsInitialized;
       if (isInitialized == 1) return true;
@@ -10097,145 +10425,209 @@ public final class CanalEntry {
       return true;
     }
 
+    @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (executeTime_ != 0L) {
         output.writeInt64(1, executeTime_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeBytes(2, getTransactionIdBytes());
+      if (!getTransactionIdBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, transactionId_);
       }
       for (int i = 0; i < props_.size(); i++) {
         output.writeMessage(3, props_.get(i));
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+      if (threadId_ != 0L) {
         output.writeInt64(4, threadId_);
       }
-      getUnknownFields().writeTo(output);
+      unknownFields.writeTo(output);
     }
 
-    private int memoizedSerializedSize = -1;
+    @java.lang.Override
     public int getSerializedSize() {
-      int size = memoizedSerializedSize;
+      int size = memoizedSize;
       if (size != -1) return size;
 
       size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (executeTime_ != 0L) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt64Size(1, executeTime_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(2, getTransactionIdBytes());
+      if (!getTransactionIdBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, transactionId_);
       }
       for (int i = 0; i < props_.size(); i++) {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(3, props_.get(i));
       }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+      if (threadId_ != 0L) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt64Size(4, threadId_);
       }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
       return size;
     }
 
-    private static final long serialVersionUID = 0L;
-    @Override
-    protected Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin other = (com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin) obj;
+
+      boolean result = true;
+      result = result && (getExecuteTime()
+          == other.getExecuteTime());
+      result = result && getTransactionId()
+          .equals(other.getTransactionId());
+      result = result && getPropsList()
+          .equals(other.getPropsList());
+      result = result && (getThreadId()
+          == other.getThreadId());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
     }
 
-    public static TransactionBegin parseFrom(
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + EXECUTETIME_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getExecuteTime());
+      hash = (37 * hash) + TRANSACTIONID_FIELD_NUMBER;
+      hash = (53 * hash) + getTransactionId().hashCode();
+      if (getPropsCount() > 0) {
+        hash = (37 * hash) + PROPS_FIELD_NUMBER;
+        hash = (53 * hash) + getPropsList().hashCode();
+      }
+      hash = (37 * hash) + THREADID_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getThreadId());
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static TransactionBegin parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static TransactionBegin parseFrom(byte[] data)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static TransactionBegin parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static TransactionBegin parseFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static TransactionBegin parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static TransactionBegin parseDelimitedFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
     }
-    public static TransactionBegin parseDelimitedFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static TransactionBegin parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static TransactionBegin parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
-    public static Builder newBuilder() { return Builder.create(); }
+    @java.lang.Override
     public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(TransactionBegin prototype) {
-      return newBuilder().mergeFrom(prototype);
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
     }
-    public Builder toBuilder() { return newBuilder(this); }
 
-    @Override
+    @java.lang.Override
     protected Builder newBuilderForType(
-        BuilderParent parent) {
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.TransactionBegin}
-     *
      * <pre>
      **开始事务的一些信息*
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.TransactionBegin}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.TransactionBegin)
-        TransactionBeginOrBuilder {
+        com.alibaba.otter.canal.protocol.CanalEntry.TransactionBeginOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor;
       }
 
-      protected FieldAccessorTable
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_fieldAccessorTable
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                TransactionBegin.class, Builder.class);
+                com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin.class, com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin.Builder.class);
       }
 
       // Construct using com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin.newBuilder()
@@ -10244,25 +10636,23 @@ public final class CanalEntry {
       }
 
       private Builder(
-          BuilderParent parent) {
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
         super(parent);
         maybeForceBuilderInitialization();
       }
       private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
           getPropsFieldBuilder();
         }
       }
-      private static Builder create() {
-        return new Builder();
-      }
-
+      @java.lang.Override
       public Builder clear() {
         super.clear();
         executeTime_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000001);
+
         transactionId_ = "";
-        bitField0_ = (bitField0_ & ~0x00000002);
+
         if (propsBuilder_ == null) {
           props_ = java.util.Collections.emptyList();
           bitField0_ = (bitField0_ & ~0x00000004);
@@ -10270,42 +10660,36 @@ public final class CanalEntry {
           propsBuilder_.clear();
         }
         threadId_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000008);
+
         return this;
       }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
+      @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor;
       }
 
-      public TransactionBegin getDefaultInstanceForType() {
-        return TransactionBegin.getDefaultInstance();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin.getDefaultInstance();
       }
 
-      public TransactionBegin build() {
-        TransactionBegin result = buildPartial();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin build() {
+        com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
         return result;
       }
 
-      public TransactionBegin buildPartial() {
-        TransactionBegin result = new TransactionBegin(this);
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin result = new com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin(this);
         int from_bitField0_ = bitField0_;
         int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
-        }
         result.executeTime_ = executeTime_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
-        }
         result.transactionId_ = transactionId_;
         if (propsBuilder_ == null) {
           if (((bitField0_ & 0x00000004) == 0x00000004)) {
@@ -10316,31 +10700,60 @@ public final class CanalEntry {
         } else {
           result.props_ = propsBuilder_.build();
         }
-        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-          to_bitField0_ |= 0x00000004;
-        }
         result.threadId_ = threadId_;
         result.bitField0_ = to_bitField0_;
         onBuilt();
         return result;
       }
 
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof TransactionBegin) {
-          return mergeFrom((TransactionBegin)other);
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(TransactionBegin other) {
-        if (other == TransactionBegin.getDefaultInstance()) return this;
-        if (other.hasExecuteTime()) {
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin.getDefaultInstance()) return this;
+        if (other.getExecuteTime() != 0L) {
           setExecuteTime(other.getExecuteTime());
         }
-        if (other.hasTransactionId()) {
-          bitField0_ |= 0x00000002;
+        if (!other.getTransactionId().isEmpty()) {
           transactionId_ = other.transactionId_;
           onChanged();
         }
@@ -10363,34 +10776,37 @@ public final class CanalEntry {
               props_ = other.props_;
               bitField0_ = (bitField0_ & ~0x00000004);
               propsBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getPropsFieldBuilder() : null;
             } else {
               propsBuilder_.addAllMessages(other.props_);
             }
           }
         }
-        if (other.hasThreadId()) {
+        if (other.getThreadId() != 0L) {
           setThreadId(other.getThreadId());
         }
-        this.mergeUnknownFields(other.getUnknownFields());
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
         return this;
       }
 
+      @java.lang.Override
       public final boolean isInitialized() {
         return true;
       }
 
+      @java.lang.Override
       public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        TransactionBegin parsedMessage = null;
+        com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (TransactionBegin) e.getUnfinishedMessage();
-          throw e;
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
             mergeFrom(parsedMessage);
@@ -10402,98 +10818,76 @@ public final class CanalEntry {
 
       private long executeTime_ ;
       /**
-       * <code>optional int64 executeTime = 1;</code>
-       *
        * <pre>
        **已废弃，请使用header里的executeTime*
        * </pre>
-       */
-      public boolean hasExecuteTime() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>optional int64 executeTime = 1;</code>
        *
-       * <pre>
-       **已废弃，请使用header里的executeTime*
-       * </pre>
+       * <code>int64 executeTime = 1;</code>
        */
       public long getExecuteTime() {
         return executeTime_;
       }
       /**
-       * <code>optional int64 executeTime = 1;</code>
-       *
        * <pre>
        **已废弃，请使用header里的executeTime*
        * </pre>
+       *
+       * <code>int64 executeTime = 1;</code>
        */
       public Builder setExecuteTime(long value) {
-        bitField0_ |= 0x00000001;
+        
         executeTime_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int64 executeTime = 1;</code>
-       *
        * <pre>
        **已废弃，请使用header里的executeTime*
        * </pre>
+       *
+       * <code>int64 executeTime = 1;</code>
        */
       public Builder clearExecuteTime() {
-        bitField0_ = (bitField0_ & ~0x00000001);
+        
         executeTime_ = 0L;
         onChanged();
         return this;
       }
 
-      private Object transactionId_ = "";
+      private java.lang.Object transactionId_ = "";
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **已废弃，Begin里不提供事务id*
        * </pre>
-       */
-      public boolean hasTransactionId() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>optional string transactionId = 2;</code>
        *
-       * <pre>
-       **已废弃，Begin里不提供事务id*
-       * </pre>
+       * <code>string transactionId = 2;</code>
        */
-      public String getTransactionId() {
-        Object ref = transactionId_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getTransactionId() {
+        java.lang.Object ref = transactionId_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            transactionId_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          transactionId_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **已废弃，Begin里不提供事务id*
        * </pre>
+       *
+       * <code>string transactionId = 2;</code>
        */
       public com.google.protobuf.ByteString
           getTransactionIdBytes() {
-        Object ref = transactionId_;
+        java.lang.Object ref = transactionId_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           transactionId_ = b;
           return b;
         } else {
@@ -10501,73 +10895,74 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **已废弃，Begin里不提供事务id*
        * </pre>
+       *
+       * <code>string transactionId = 2;</code>
        */
       public Builder setTransactionId(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000002;
+  
         transactionId_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **已废弃，Begin里不提供事务id*
        * </pre>
+       *
+       * <code>string transactionId = 2;</code>
        */
       public Builder clearTransactionId() {
-        bitField0_ = (bitField0_ & ~0x00000002);
+        
         transactionId_ = getDefaultInstance().getTransactionId();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **已废弃，Begin里不提供事务id*
        * </pre>
+       *
+       * <code>string transactionId = 2;</code>
        */
       public Builder setTransactionIdBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000002;
+  checkByteStringIsUtf8(value);
+        
         transactionId_ = value;
         onChanged();
         return this;
       }
 
-      private java.util.List<Pair> props_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_ =
         java.util.Collections.emptyList();
       private void ensurePropsIsMutable() {
         if (!((bitField0_ & 0x00000004) == 0x00000004)) {
-          props_ = new java.util.ArrayList<Pair>(props_);
+          props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>(props_);
           bitField0_ |= 0x00000004;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder> propsBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> propsBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<Pair> getPropsList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
         if (propsBuilder_ == null) {
           return java.util.Collections.unmodifiableList(props_);
         } else {
@@ -10575,11 +10970,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public int getPropsCount() {
         if (propsBuilder_ == null) {
@@ -10589,13 +10984,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair getProps(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);
         } else {
@@ -10603,14 +10998,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder setProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -10624,14 +11019,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder setProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.set(index, builderForValue.build());
@@ -10642,13 +11037,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Builder addProps(Pair value) {
+      public Builder addProps(com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -10662,14 +11057,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -10683,14 +11078,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          Pair.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(builderForValue.build());
@@ -10701,14 +11096,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(index, builderForValue.build());
@@ -10719,14 +11114,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addAllProps(
-          Iterable<? extends Pair> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.Pair> values) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -10738,11 +11133,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder clearProps() {
         if (propsBuilder_ == null) {
@@ -10755,11 +11150,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder removeProps(int index) {
         if (propsBuilder_ == null) {
@@ -10772,24 +11167,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder getPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder getPropsBuilder(
           int index) {
         return getPropsFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public PairOrBuilder getPropsOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
           int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);  } else {
@@ -10797,13 +11192,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<? extends PairOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
            getPropsOrBuilderList() {
         if (propsBuilder_ != null) {
           return propsBuilder_.getMessageOrBuilderList();
@@ -10812,45 +11207,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder addPropsBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder() {
         return getPropsFieldBuilder().addBuilder(
-            Pair.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder addPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder(
           int index) {
         return getPropsFieldBuilder().addBuilder(
-            index, Pair.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<Pair.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder> 
            getPropsBuilderList() {
         return getPropsFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
           getPropsFieldBuilder() {
         if (propsBuilder_ == null) {
-          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              Pair, Pair.Builder, PairOrBuilder>(
+          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder>(
                   props_,
                   ((bitField0_ & 0x00000004) == 0x00000004),
                   getParentForChildren(),
@@ -10862,61 +11257,92 @@ public final class CanalEntry {
 
       private long threadId_ ;
       /**
-       * <code>optional int64 threadId = 4;</code>
-       *
        * <pre>
        **执行的thread Id*
        * </pre>
-       */
-      public boolean hasThreadId() {
-        return ((bitField0_ & 0x00000008) == 0x00000008);
-      }
-      /**
-       * <code>optional int64 threadId = 4;</code>
        *
-       * <pre>
-       **执行的thread Id*
-       * </pre>
+       * <code>int64 threadId = 4;</code>
        */
       public long getThreadId() {
         return threadId_;
       }
       /**
-       * <code>optional int64 threadId = 4;</code>
-       *
        * <pre>
        **执行的thread Id*
        * </pre>
+       *
+       * <code>int64 threadId = 4;</code>
        */
       public Builder setThreadId(long value) {
-        bitField0_ |= 0x00000008;
+        
         threadId_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int64 threadId = 4;</code>
-       *
        * <pre>
        **执行的thread Id*
        * </pre>
+       *
+       * <code>int64 threadId = 4;</code>
        */
       public Builder clearThreadId() {
-        bitField0_ = (bitField0_ & ~0x00000008);
+        
         threadId_ = 0L;
         onChanged();
         return this;
       }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
 
       // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.TransactionBegin)
     }
 
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.TransactionBegin)
+    private static final com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin DEFAULT_INSTANCE;
     static {
-      defaultInstance = new TransactionBegin(true);
-      defaultInstance.initFields();
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin();
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<TransactionBegin>
+        PARSER = new com.google.protobuf.AbstractParser<TransactionBegin>() {
+      @java.lang.Override
+      public TransactionBegin parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new TransactionBegin(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<TransactionBegin> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<TransactionBegin> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.TransactionBegin)
   }
 
   public interface TransactionEndOrBuilder extends
@@ -10924,129 +11350,111 @@ public final class CanalEntry {
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>optional int64 executeTime = 1;</code>
-     *
      * <pre>
      **已废弃，请使用header里的executeTime*
      * </pre>
-     */
-    boolean hasExecuteTime();
-    /**
-     * <code>optional int64 executeTime = 1;</code>
      *
-     * <pre>
-     **已废弃，请使用header里的executeTime*
-     * </pre>
+     * <code>int64 executeTime = 1;</code>
      */
     long getExecuteTime();
 
     /**
-     * <code>optional string transactionId = 2;</code>
-     *
      * <pre>
      **事务号*
      * </pre>
+     *
+     * <code>string transactionId = 2;</code>
      */
-    boolean hasTransactionId();
+    java.lang.String getTransactionId();
     /**
-     * <code>optional string transactionId = 2;</code>
-     *
      * <pre>
      **事务号*
      * </pre>
-     */
-    String getTransactionId();
-    /**
-     * <code>optional string transactionId = 2;</code>
      *
-     * <pre>
-     **事务号*
-     * </pre>
+     * <code>string transactionId = 2;</code>
      */
     com.google.protobuf.ByteString
         getTransactionIdBytes();
 
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    java.util.List<Pair>
+    java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> 
         getPropsList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    Pair getProps(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index);
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
     int getPropsCount();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    java.util.List<? extends PairOrBuilder>
+    java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList();
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    PairOrBuilder getPropsOrBuilder(int index);
+    com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
+        int index);
   }
   /**
-   * Protobuf type {@code com.alibaba.otter.canal.protocol.TransactionEnd}
-   *
    * <pre>
    **结束事务的一些信息*
    * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.TransactionEnd}
    */
-  public static final class TransactionEnd extends
-      com.google.protobuf.GeneratedMessage implements
+  public  static final class TransactionEnd extends
+      com.google.protobuf.GeneratedMessageV3 implements
       // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.TransactionEnd)
       TransactionEndOrBuilder {
+  private static final long serialVersionUID = 0L;
     // Use TransactionEnd.newBuilder() to construct.
-    private TransactionEnd(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    private TransactionEnd(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
-      this.unknownFields = builder.getUnknownFields();
     }
-    private TransactionEnd(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final TransactionEnd defaultInstance;
-    public static TransactionEnd getDefaultInstance() {
-      return defaultInstance;
+    private TransactionEnd() {
+      executeTime_ = 0L;
+      transactionId_ = "";
+      props_ = java.util.Collections.emptyList();
     }
 
-    public TransactionEnd getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @Override
+    @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
+    getUnknownFields() {
       return this.unknownFields;
     }
     private TransactionEnd(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
       int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
@@ -11058,30 +11466,31 @@ public final class CanalEntry {
             case 0:
               done = true;
               break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
             case 8: {
-              bitField0_ |= 0x00000001;
+
               executeTime_ = input.readInt64();
               break;
             }
             case 18: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000002;
-              transactionId_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              transactionId_ = s;
               break;
             }
             case 26: {
               if (!((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
-                props_ = new java.util.ArrayList<Pair>();
+                props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>();
                 mutable_bitField0_ |= 0x00000004;
               }
-              props_.add(input.readMessage(Pair.PARSER, extensionRegistry));
+              props_.add(
+                  input.readMessage(com.alibaba.otter.canal.protocol.CanalEntry.Pair.parser(), extensionRegistry));
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
               break;
             }
           }
@@ -11090,7 +11499,7 @@ public final class CanalEntry {
         throw e.setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
+            e).setUnfinishedMessage(this);
       } finally {
         if (((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
           props_ = java.util.Collections.unmodifiableList(props_);
@@ -11101,102 +11510,66 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor;
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor;
     }
 
-    protected FieldAccessorTable
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_fieldAccessorTable
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              TransactionEnd.class, Builder.class);
-    }
-
-    public static com.google.protobuf.Parser<TransactionEnd> PARSER =
-        new com.google.protobuf.AbstractParser<TransactionEnd>() {
-      public TransactionEnd parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new TransactionEnd(input, extensionRegistry);
-      }
-    };
-
-    @Override
-    public com.google.protobuf.Parser<TransactionEnd> getParserForType() {
-      return PARSER;
+              com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd.class, com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd.Builder.class);
     }
 
     private int bitField0_;
     public static final int EXECUTETIME_FIELD_NUMBER = 1;
     private long executeTime_;
     /**
-     * <code>optional int64 executeTime = 1;</code>
-     *
      * <pre>
      **已废弃，请使用header里的executeTime*
      * </pre>
-     */
-    public boolean hasExecuteTime() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
-    }
-    /**
-     * <code>optional int64 executeTime = 1;</code>
      *
-     * <pre>
-     **已废弃，请使用header里的executeTime*
-     * </pre>
+     * <code>int64 executeTime = 1;</code>
      */
     public long getExecuteTime() {
       return executeTime_;
     }
 
     public static final int TRANSACTIONID_FIELD_NUMBER = 2;
-    private Object transactionId_;
+    private volatile java.lang.Object transactionId_;
     /**
-     * <code>optional string transactionId = 2;</code>
-     *
      * <pre>
      **事务号*
      * </pre>
-     */
-    public boolean hasTransactionId() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
-    }
-    /**
-     * <code>optional string transactionId = 2;</code>
      *
-     * <pre>
-     **事务号*
-     * </pre>
+     * <code>string transactionId = 2;</code>
      */
-    public String getTransactionId() {
-      Object ref = transactionId_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getTransactionId() {
+      java.lang.Object ref = transactionId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          transactionId_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        transactionId_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string transactionId = 2;</code>
-     *
      * <pre>
      **事务号*
      * </pre>
+     *
+     * <code>string transactionId = 2;</code>
      */
     public com.google.protobuf.ByteString
         getTransactionIdBytes() {
-      Object ref = transactionId_;
-      if (ref instanceof String) {
+      java.lang.Object ref = transactionId_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         transactionId_ = b;
         return b;
       } else {
@@ -11205,66 +11578,62 @@ public final class CanalEntry {
     }
 
     public static final int PROPS_FIELD_NUMBER = 3;
-    private java.util.List<Pair> props_;
+    private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_;
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public java.util.List<Pair> getPropsList() {
+    public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public java.util.List<? extends PairOrBuilder>
+    public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
         getPropsOrBuilderList() {
       return props_;
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
     public int getPropsCount() {
       return props_.size();
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public Pair getProps(int index) {
+    public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
       return props_.get(index);
     }
     /**
-     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
      */
-    public PairOrBuilder getPropsOrBuilder(
+    public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
         int index) {
       return props_.get(index);
     }
 
-    private void initFields() {
-      executeTime_ = 0L;
-      transactionId_ = "";
-      props_ = java.util.Collections.emptyList();
-    }
     private byte memoizedIsInitialized = -1;
+    @java.lang.Override
     public final boolean isInitialized() {
       byte isInitialized = memoizedIsInitialized;
       if (isInitialized == 1) return true;
@@ -11274,138 +11643,197 @@ public final class CanalEntry {
       return true;
     }
 
+    @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (executeTime_ != 0L) {
         output.writeInt64(1, executeTime_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeBytes(2, getTransactionIdBytes());
+      if (!getTransactionIdBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, transactionId_);
       }
       for (int i = 0; i < props_.size(); i++) {
         output.writeMessage(3, props_.get(i));
       }
-      getUnknownFields().writeTo(output);
+      unknownFields.writeTo(output);
     }
 
-    private int memoizedSerializedSize = -1;
+    @java.lang.Override
     public int getSerializedSize() {
-      int size = memoizedSerializedSize;
+      int size = memoizedSize;
       if (size != -1) return size;
 
       size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+      if (executeTime_ != 0L) {
         size += com.google.protobuf.CodedOutputStream
           .computeInt64Size(1, executeTime_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(2, getTransactionIdBytes());
+      if (!getTransactionIdBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, transactionId_);
       }
       for (int i = 0; i < props_.size(); i++) {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(3, props_.get(i));
       }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
       return size;
     }
 
-    private static final long serialVersionUID = 0L;
-    @Override
-    protected Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd other = (com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd) obj;
+
+      boolean result = true;
+      result = result && (getExecuteTime()
+          == other.getExecuteTime());
+      result = result && getTransactionId()
+          .equals(other.getTransactionId());
+      result = result && getPropsList()
+          .equals(other.getPropsList());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
     }
 
-    public static TransactionEnd parseFrom(
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + EXECUTETIME_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getExecuteTime());
+      hash = (37 * hash) + TRANSACTIONID_FIELD_NUMBER;
+      hash = (53 * hash) + getTransactionId().hashCode();
+      if (getPropsCount() > 0) {
+        hash = (37 * hash) + PROPS_FIELD_NUMBER;
+        hash = (53 * hash) + getPropsList().hashCode();
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static TransactionEnd parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static TransactionEnd parseFrom(byte[] data)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static TransactionEnd parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static TransactionEnd parseFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static TransactionEnd parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static TransactionEnd parseDelimitedFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
     }
-    public static TransactionEnd parseDelimitedFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static TransactionEnd parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static TransactionEnd parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
-    public static Builder newBuilder() { return Builder.create(); }
+    @java.lang.Override
     public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(TransactionEnd prototype) {
-      return newBuilder().mergeFrom(prototype);
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
     }
-    public Builder toBuilder() { return newBuilder(this); }
 
-    @Override
+    @java.lang.Override
     protected Builder newBuilderForType(
-        BuilderParent parent) {
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.TransactionEnd}
-     *
      * <pre>
      **结束事务的一些信息*
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.TransactionEnd}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.TransactionEnd)
-        TransactionEndOrBuilder {
+        com.alibaba.otter.canal.protocol.CanalEntry.TransactionEndOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor;
       }
 
-      protected FieldAccessorTable
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_fieldAccessorTable
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                TransactionEnd.class, Builder.class);
+                com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd.class, com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd.Builder.class);
       }
 
       // Construct using com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd.newBuilder()
@@ -11414,25 +11842,23 @@ public final class CanalEntry {
       }
 
       private Builder(
-          BuilderParent parent) {
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
         super(parent);
         maybeForceBuilderInitialization();
       }
       private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
           getPropsFieldBuilder();
         }
       }
-      private static Builder create() {
-        return new Builder();
-      }
-
+      @java.lang.Override
       public Builder clear() {
         super.clear();
         executeTime_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000001);
+
         transactionId_ = "";
-        bitField0_ = (bitField0_ & ~0x00000002);
+
         if (propsBuilder_ == null) {
           props_ = java.util.Collections.emptyList();
           bitField0_ = (bitField0_ & ~0x00000004);
@@ -11442,38 +11868,32 @@ public final class CanalEntry {
         return this;
       }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
+      @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor;
       }
 
-      public TransactionEnd getDefaultInstanceForType() {
-        return TransactionEnd.getDefaultInstance();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd.getDefaultInstance();
       }
 
-      public TransactionEnd build() {
-        TransactionEnd result = buildPartial();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd build() {
+        com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
         return result;
       }
 
-      public TransactionEnd buildPartial() {
-        TransactionEnd result = new TransactionEnd(this);
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd result = new com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd(this);
         int from_bitField0_ = bitField0_;
         int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
-        }
         result.executeTime_ = executeTime_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
-        }
         result.transactionId_ = transactionId_;
         if (propsBuilder_ == null) {
           if (((bitField0_ & 0x00000004) == 0x00000004)) {
@@ -11489,22 +11909,54 @@ public final class CanalEntry {
         return result;
       }
 
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof TransactionEnd) {
-          return mergeFrom((TransactionEnd)other);
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(TransactionEnd other) {
-        if (other == TransactionEnd.getDefaultInstance()) return this;
-        if (other.hasExecuteTime()) {
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd.getDefaultInstance()) return this;
+        if (other.getExecuteTime() != 0L) {
           setExecuteTime(other.getExecuteTime());
         }
-        if (other.hasTransactionId()) {
-          bitField0_ |= 0x00000002;
+        if (!other.getTransactionId().isEmpty()) {
           transactionId_ = other.transactionId_;
           onChanged();
         }
@@ -11527,31 +11979,34 @@ public final class CanalEntry {
               props_ = other.props_;
               bitField0_ = (bitField0_ & ~0x00000004);
               propsBuilder_ = 
-                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
                    getPropsFieldBuilder() : null;
             } else {
               propsBuilder_.addAllMessages(other.props_);
             }
           }
         }
-        this.mergeUnknownFields(other.getUnknownFields());
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
         return this;
       }
 
+      @java.lang.Override
       public final boolean isInitialized() {
         return true;
       }
 
+      @java.lang.Override
       public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        TransactionEnd parsedMessage = null;
+        com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (TransactionEnd) e.getUnfinishedMessage();
-          throw e;
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
             mergeFrom(parsedMessage);
@@ -11563,98 +12018,76 @@ public final class CanalEntry {
 
       private long executeTime_ ;
       /**
-       * <code>optional int64 executeTime = 1;</code>
-       *
        * <pre>
        **已废弃，请使用header里的executeTime*
        * </pre>
-       */
-      public boolean hasExecuteTime() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>optional int64 executeTime = 1;</code>
        *
-       * <pre>
-       **已废弃，请使用header里的executeTime*
-       * </pre>
+       * <code>int64 executeTime = 1;</code>
        */
       public long getExecuteTime() {
         return executeTime_;
       }
       /**
-       * <code>optional int64 executeTime = 1;</code>
-       *
        * <pre>
        **已废弃，请使用header里的executeTime*
        * </pre>
+       *
+       * <code>int64 executeTime = 1;</code>
        */
       public Builder setExecuteTime(long value) {
-        bitField0_ |= 0x00000001;
+        
         executeTime_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional int64 executeTime = 1;</code>
-       *
        * <pre>
        **已废弃，请使用header里的executeTime*
        * </pre>
+       *
+       * <code>int64 executeTime = 1;</code>
        */
       public Builder clearExecuteTime() {
-        bitField0_ = (bitField0_ & ~0x00000001);
+        
         executeTime_ = 0L;
         onChanged();
         return this;
       }
 
-      private Object transactionId_ = "";
+      private java.lang.Object transactionId_ = "";
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **事务号*
        * </pre>
-       */
-      public boolean hasTransactionId() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>optional string transactionId = 2;</code>
        *
-       * <pre>
-       **事务号*
-       * </pre>
+       * <code>string transactionId = 2;</code>
        */
-      public String getTransactionId() {
-        Object ref = transactionId_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getTransactionId() {
+        java.lang.Object ref = transactionId_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            transactionId_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          transactionId_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **事务号*
        * </pre>
+       *
+       * <code>string transactionId = 2;</code>
        */
       public com.google.protobuf.ByteString
           getTransactionIdBytes() {
-        Object ref = transactionId_;
+        java.lang.Object ref = transactionId_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           transactionId_ = b;
           return b;
         } else {
@@ -11662,73 +12095,74 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **事务号*
        * </pre>
+       *
+       * <code>string transactionId = 2;</code>
        */
       public Builder setTransactionId(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000002;
+  
         transactionId_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **事务号*
        * </pre>
+       *
+       * <code>string transactionId = 2;</code>
        */
       public Builder clearTransactionId() {
-        bitField0_ = (bitField0_ & ~0x00000002);
+        
         transactionId_ = getDefaultInstance().getTransactionId();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string transactionId = 2;</code>
-       *
        * <pre>
        **事务号*
        * </pre>
+       *
+       * <code>string transactionId = 2;</code>
        */
       public Builder setTransactionIdBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000002;
+  checkByteStringIsUtf8(value);
+        
         transactionId_ = value;
         onChanged();
         return this;
       }
 
-      private java.util.List<Pair> props_ =
+      private java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> props_ =
         java.util.Collections.emptyList();
       private void ensurePropsIsMutable() {
         if (!((bitField0_ & 0x00000004) == 0x00000004)) {
-          props_ = new java.util.ArrayList<Pair>(props_);
+          props_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalEntry.Pair>(props_);
           bitField0_ |= 0x00000004;
          }
       }
 
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder> propsBuilder_;
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> propsBuilder_;
 
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<Pair> getPropsList() {
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair> getPropsList() {
         if (propsBuilder_ == null) {
           return java.util.Collections.unmodifiableList(props_);
         } else {
@@ -11736,11 +12170,11 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public int getPropsCount() {
         if (propsBuilder_ == null) {
@@ -11750,13 +12184,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair getProps(int index) {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair getProps(int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);
         } else {
@@ -11764,14 +12198,14 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder setProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -11785,14 +12219,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder setProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.set(index, builderForValue.build());
@@ -11803,13 +12237,13 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Builder addProps(Pair value) {
+      public Builder addProps(com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -11823,14 +12257,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          int index, Pair value) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair value) {
         if (propsBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -11844,14 +12278,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          Pair.Builder builderForValue) {
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(builderForValue.build());
@@ -11862,14 +12296,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addProps(
-          int index, Pair.Builder builderForValue) {
+          int index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder builderForValue) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           props_.add(index, builderForValue.build());
@@ -11880,14 +12314,14 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder addAllProps(
-          Iterable<? extends Pair> values) {
+          java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalEntry.Pair> values) {
         if (propsBuilder_ == null) {
           ensurePropsIsMutable();
           com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -11899,11 +12333,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder clearProps() {
         if (propsBuilder_ == null) {
@@ -11916,11 +12350,11 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
       public Builder removeProps(int index) {
         if (propsBuilder_ == null) {
@@ -11933,24 +12367,24 @@ public final class CanalEntry {
         return this;
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder getPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder getPropsBuilder(
           int index) {
         return getPropsFieldBuilder().getBuilder(index);
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public PairOrBuilder getPropsOrBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder getPropsOrBuilder(
           int index) {
         if (propsBuilder_ == null) {
           return props_.get(index);  } else {
@@ -11958,13 +12392,13 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<? extends PairOrBuilder>
+      public java.util.List<? extends com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
            getPropsOrBuilderList() {
         if (propsBuilder_ != null) {
           return propsBuilder_.getMessageOrBuilderList();
@@ -11973,45 +12407,45 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder addPropsBuilder() {
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder() {
         return getPropsFieldBuilder().addBuilder(
-            Pair.getDefaultInstance());
+            com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public Pair.Builder addPropsBuilder(
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder addPropsBuilder(
           int index) {
         return getPropsFieldBuilder().addBuilder(
-            index, Pair.getDefaultInstance());
+            index, com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance());
       }
       /**
-       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
-       *
        * <pre>
        **预留扩展*
        * </pre>
+       *
+       * <code>repeated .com.alibaba.otter.canal.protocol.Pair props = 3;</code>
        */
-      public java.util.List<Pair.Builder>
+      public java.util.List<com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder> 
            getPropsBuilderList() {
         return getPropsFieldBuilder().getBuilderList();
       }
-      private com.google.protobuf.RepeatedFieldBuilder<
-          Pair, Pair.Builder, PairOrBuilder>
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+          com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder> 
           getPropsFieldBuilder() {
         if (propsBuilder_ == null) {
-          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
-              Pair, Pair.Builder, PairOrBuilder>(
+          propsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+              com.alibaba.otter.canal.protocol.CanalEntry.Pair, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder, com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder>(
                   props_,
                   ((bitField0_ & 0x00000004) == 0x00000004),
                   getParentForChildren(),
@@ -12020,16 +12454,57 @@ public final class CanalEntry {
         }
         return propsBuilder_;
       }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
 
       // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.TransactionEnd)
     }
 
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.TransactionEnd)
+    private static final com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd DEFAULT_INSTANCE;
     static {
-      defaultInstance = new TransactionEnd(true);
-      defaultInstance.initFields();
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd();
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<TransactionEnd>
+        PARSER = new com.google.protobuf.AbstractParser<TransactionEnd>() {
+      @java.lang.Override
+      public TransactionEnd parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new TransactionEnd(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<TransactionEnd> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<TransactionEnd> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.TransactionEnd)
   }
 
   public interface PairOrBuilder extends
@@ -12037,71 +12512,59 @@ public final class CanalEntry {
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>optional string key = 1;</code>
+     * <code>string key = 1;</code>
      */
-    boolean hasKey();
+    java.lang.String getKey();
     /**
-     * <code>optional string key = 1;</code>
-     */
-    String getKey();
-    /**
-     * <code>optional string key = 1;</code>
+     * <code>string key = 1;</code>
      */
     com.google.protobuf.ByteString
         getKeyBytes();
 
     /**
-     * <code>optional string value = 2;</code>
+     * <code>string value = 2;</code>
      */
-    boolean hasValue();
+    java.lang.String getValue();
     /**
-     * <code>optional string value = 2;</code>
-     */
-    String getValue();
-    /**
-     * <code>optional string value = 2;</code>
+     * <code>string value = 2;</code>
      */
     com.google.protobuf.ByteString
         getValueBytes();
   }
   /**
-   * Protobuf type {@code com.alibaba.otter.canal.protocol.Pair}
-   *
    * <pre>
    **预留扩展*
    * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Pair}
    */
-  public static final class Pair extends
-      com.google.protobuf.GeneratedMessage implements
+  public  static final class Pair extends
+      com.google.protobuf.GeneratedMessageV3 implements
       // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Pair)
       PairOrBuilder {
+  private static final long serialVersionUID = 0L;
     // Use Pair.newBuilder() to construct.
-    private Pair(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+    private Pair(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
-      this.unknownFields = builder.getUnknownFields();
     }
-    private Pair(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final Pair defaultInstance;
-    public static Pair getDefaultInstance() {
-      return defaultInstance;
+    private Pair() {
+      key_ = "";
+      value_ = "";
     }
 
-    public Pair getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @Override
+    @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
+    getUnknownFields() {
       return this.unknownFields;
     }
     private Pair(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
       int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
@@ -12113,23 +12576,23 @@ public final class CanalEntry {
             case 0:
               done = true;
               break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
             case 10: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000001;
-              key_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              key_ = s;
               break;
             }
             case 18: {
-              com.google.protobuf.ByteString bs = input.readBytes();
-              bitField0_ |= 0x00000002;
-              value_ = bs;
+              java.lang.String s = input.readStringRequireUtf8();
+
+              value_ = s;
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
               break;
             }
           }
@@ -12138,7 +12601,7 @@ public final class CanalEntry {
         throw e.setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
+            e).setUnfinishedMessage(this);
       } finally {
         this.unknownFields = unknownFields.build();
         makeExtensionsImmutable();
@@ -12146,67 +12609,44 @@ public final class CanalEntry {
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor;
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor;
     }
 
-    protected FieldAccessorTable
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_fieldAccessorTable
+      return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              Pair.class, Builder.class);
+              com.alibaba.otter.canal.protocol.CanalEntry.Pair.class, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder.class);
     }
 
-    public static com.google.protobuf.Parser<Pair> PARSER =
-        new com.google.protobuf.AbstractParser<Pair>() {
-      public Pair parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new Pair(input, extensionRegistry);
-      }
-    };
-
-    @Override
-    public com.google.protobuf.Parser<Pair> getParserForType() {
-      return PARSER;
-    }
-
-    private int bitField0_;
     public static final int KEY_FIELD_NUMBER = 1;
-    private Object key_;
+    private volatile java.lang.Object key_;
     /**
-     * <code>optional string key = 1;</code>
+     * <code>string key = 1;</code>
      */
-    public boolean hasKey() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
-    }
-    /**
-     * <code>optional string key = 1;</code>
-     */
-    public String getKey() {
-      Object ref = key_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getKey() {
+      java.lang.Object ref = key_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          key_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        key_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string key = 1;</code>
+     * <code>string key = 1;</code>
      */
     public com.google.protobuf.ByteString
         getKeyBytes() {
-      Object ref = key_;
-      if (ref instanceof String) {
+      java.lang.Object ref = key_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         key_ = b;
         return b;
       } else {
@@ -12215,40 +12655,32 @@ public final class CanalEntry {
     }
 
     public static final int VALUE_FIELD_NUMBER = 2;
-    private Object value_;
+    private volatile java.lang.Object value_;
     /**
-     * <code>optional string value = 2;</code>
+     * <code>string value = 2;</code>
      */
-    public boolean hasValue() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
-    }
-    /**
-     * <code>optional string value = 2;</code>
-     */
-    public String getValue() {
-      Object ref = value_;
-      if (ref instanceof String) {
-        return (String) ref;
+    public java.lang.String getValue() {
+      java.lang.Object ref = value_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
-        String s = bs.toStringUtf8();
-        if (bs.isValidUtf8()) {
-          value_ = s;
-        }
+        java.lang.String s = bs.toStringUtf8();
+        value_ = s;
         return s;
       }
     }
     /**
-     * <code>optional string value = 2;</code>
+     * <code>string value = 2;</code>
      */
     public com.google.protobuf.ByteString
         getValueBytes() {
-      Object ref = value_;
-      if (ref instanceof String) {
+      java.lang.Object ref = value_;
+      if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
-                (String) ref);
+                (java.lang.String) ref);
         value_ = b;
         return b;
       } else {
@@ -12256,11 +12688,8 @@ public final class CanalEntry {
       }
     }
 
-    private void initFields() {
-      key_ = "";
-      value_ = "";
-    }
     private byte memoizedIsInitialized = -1;
+    @java.lang.Override
     public final boolean isInitialized() {
       byte isInitialized = memoizedIsInitialized;
       if (isInitialized == 1) return true;
@@ -12270,131 +12699,182 @@ public final class CanalEntry {
       return true;
     }
 
+    @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        output.writeBytes(1, getKeyBytes());
+      if (!getKeyBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, key_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeBytes(2, getValueBytes());
+      if (!getValueBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, value_);
       }
-      getUnknownFields().writeTo(output);
+      unknownFields.writeTo(output);
     }
 
-    private int memoizedSerializedSize = -1;
+    @java.lang.Override
     public int getSerializedSize() {
-      int size = memoizedSerializedSize;
+      int size = memoizedSize;
       if (size != -1) return size;
 
       size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(1, getKeyBytes());
+      if (!getKeyBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, key_);
       }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(2, getValueBytes());
+      if (!getValueBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, value_);
       }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
       return size;
     }
 
-    private static final long serialVersionUID = 0L;
-    @Override
-    protected Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalEntry.Pair)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalEntry.Pair other = (com.alibaba.otter.canal.protocol.CanalEntry.Pair) obj;
+
+      boolean result = true;
+      result = result && getKey()
+          .equals(other.getKey());
+      result = result && getValue()
+          .equals(other.getValue());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
     }
 
-    public static Pair parseFrom(
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + KEY_FIELD_NUMBER;
+      hash = (53 * hash) + getKey().hashCode();
+      hash = (37 * hash) + VALUE_FIELD_NUMBER;
+      hash = (53 * hash) + getValue().hashCode();
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static Pair parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static Pair parseFrom(byte[] data)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static Pair parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static Pair parseFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static Pair parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static Pair parseDelimitedFrom(java.io.InputStream input)
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
     }
-    public static Pair parseDelimitedFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static Pair parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return PARSER.parseFrom(input);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
     }
-    public static Pair parseFrom(
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
-    public static Builder newBuilder() { return Builder.create(); }
+    @java.lang.Override
     public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(Pair prototype) {
-      return newBuilder().mergeFrom(prototype);
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalEntry.Pair prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
     }
-    public Builder toBuilder() { return newBuilder(this); }
 
-    @Override
+    @java.lang.Override
     protected Builder newBuilderForType(
-        BuilderParent parent) {
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Pair}
-     *
      * <pre>
      **预留扩展*
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Pair}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Pair)
-        PairOrBuilder {
+        com.alibaba.otter.canal.protocol.CanalEntry.PairOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor;
       }
 
-      protected FieldAccessorTable
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_fieldAccessorTable
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                Pair.class, Builder.class);
+                com.alibaba.otter.canal.protocol.CanalEntry.Pair.class, com.alibaba.otter.canal.protocol.CanalEntry.Pair.Builder.class);
       }
 
       // Construct using com.alibaba.otter.canal.protocol.CanalEntry.Pair.newBuilder()
@@ -12403,104 +12883,127 @@ public final class CanalEntry {
       }
 
       private Builder(
-          BuilderParent parent) {
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
         super(parent);
         maybeForceBuilderInitialization();
       }
       private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
       }
-      private static Builder create() {
-        return new Builder();
-      }
-
+      @java.lang.Override
       public Builder clear() {
         super.clear();
         key_ = "";
-        bitField0_ = (bitField0_ & ~0x00000001);
+
         value_ = "";
-        bitField0_ = (bitField0_ & ~0x00000002);
+
         return this;
       }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
+      @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor;
+        return com.alibaba.otter.canal.protocol.CanalEntry.internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor;
       }
 
-      public Pair getDefaultInstanceForType() {
-        return Pair.getDefaultInstance();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance();
       }
 
-      public Pair build() {
-        Pair result = buildPartial();
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair build() {
+        com.alibaba.otter.canal.protocol.CanalEntry.Pair result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
         return result;
       }
 
-      public Pair buildPartial() {
-        Pair result = new Pair(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
-        }
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalEntry.Pair buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalEntry.Pair result = new com.alibaba.otter.canal.protocol.CanalEntry.Pair(this);
         result.key_ = key_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
-        }
         result.value_ = value_;
-        result.bitField0_ = to_bitField0_;
         onBuilt();
         return result;
       }
 
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof Pair) {
-          return mergeFrom((Pair)other);
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalEntry.Pair) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalEntry.Pair)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(Pair other) {
-        if (other == Pair.getDefaultInstance()) return this;
-        if (other.hasKey()) {
-          bitField0_ |= 0x00000001;
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalEntry.Pair other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalEntry.Pair.getDefaultInstance()) return this;
+        if (!other.getKey().isEmpty()) {
           key_ = other.key_;
           onChanged();
         }
-        if (other.hasValue()) {
-          bitField0_ |= 0x00000002;
+        if (!other.getValue().isEmpty()) {
           value_ = other.value_;
           onChanged();
         }
-        this.mergeUnknownFields(other.getUnknownFields());
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
         return this;
       }
 
+      @java.lang.Override
       public final boolean isInitialized() {
         return true;
       }
 
+      @java.lang.Override
       public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        Pair parsedMessage = null;
+        com.alibaba.otter.canal.protocol.CanalEntry.Pair parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (Pair) e.getUnfinishedMessage();
-          throw e;
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalEntry.Pair) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
             mergeFrom(parsedMessage);
@@ -12508,42 +13011,33 @@ public final class CanalEntry {
         }
         return this;
       }
-      private int bitField0_;
 
-      private Object key_ = "";
+      private java.lang.Object key_ = "";
       /**
-       * <code>optional string key = 1;</code>
+       * <code>string key = 1;</code>
        */
-      public boolean hasKey() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>optional string key = 1;</code>
-       */
-      public String getKey() {
-        Object ref = key_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getKey() {
+        java.lang.Object ref = key_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            key_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          key_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string key = 1;</code>
+       * <code>string key = 1;</code>
        */
       public com.google.protobuf.ByteString
           getKeyBytes() {
-        Object ref = key_;
+        java.lang.Object ref = key_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           key_ = b;
           return b;
         } else {
@@ -12551,75 +13045,68 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string key = 1;</code>
+       * <code>string key = 1;</code>
        */
       public Builder setKey(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000001;
+  
         key_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string key = 1;</code>
+       * <code>string key = 1;</code>
        */
       public Builder clearKey() {
-        bitField0_ = (bitField0_ & ~0x00000001);
+        
         key_ = getDefaultInstance().getKey();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string key = 1;</code>
+       * <code>string key = 1;</code>
        */
       public Builder setKeyBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000001;
+  checkByteStringIsUtf8(value);
+        
         key_ = value;
         onChanged();
         return this;
       }
 
-      private Object value_ = "";
+      private java.lang.Object value_ = "";
       /**
-       * <code>optional string value = 2;</code>
+       * <code>string value = 2;</code>
        */
-      public boolean hasValue() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>optional string value = 2;</code>
-       */
-      public String getValue() {
-        Object ref = value_;
-        if (!(ref instanceof String)) {
+      public java.lang.String getValue() {
+        java.lang.Object ref = value_;
+        if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
-          String s = bs.toStringUtf8();
-          if (bs.isValidUtf8()) {
-            value_ = s;
-          }
+          java.lang.String s = bs.toStringUtf8();
+          value_ = s;
           return s;
         } else {
-          return (String) ref;
+          return (java.lang.String) ref;
         }
       }
       /**
-       * <code>optional string value = 2;</code>
+       * <code>string value = 2;</code>
        */
       public com.google.protobuf.ByteString
           getValueBytes() {
-        Object ref = value_;
+        java.lang.Object ref = value_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
-                  (String) ref);
+                  (java.lang.String) ref);
           value_ = b;
           return b;
         } else {
@@ -12627,151 +13114,197 @@ public final class CanalEntry {
         }
       }
       /**
-       * <code>optional string value = 2;</code>
+       * <code>string value = 2;</code>
        */
       public Builder setValue(
-          String value) {
+          java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000002;
+  
         value_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional string value = 2;</code>
+       * <code>string value = 2;</code>
        */
       public Builder clearValue() {
-        bitField0_ = (bitField0_ & ~0x00000002);
+        
         value_ = getDefaultInstance().getValue();
         onChanged();
         return this;
       }
       /**
-       * <code>optional string value = 2;</code>
+       * <code>string value = 2;</code>
        */
       public Builder setValueBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
-  bitField0_ |= 0x00000002;
+  checkByteStringIsUtf8(value);
+        
         value_ = value;
         onChanged();
         return this;
       }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
 
       // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Pair)
     }
 
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Pair)
+    private static final com.alibaba.otter.canal.protocol.CanalEntry.Pair DEFAULT_INSTANCE;
     static {
-      defaultInstance = new Pair(true);
-      defaultInstance.initFields();
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalEntry.Pair();
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalEntry.Pair getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Pair>
+        PARSER = new com.google.protobuf.AbstractParser<Pair>() {
+      @java.lang.Override
+      public Pair parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Pair(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Pair> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Pair> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalEntry.Pair getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Pair)
   }
 
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_com_alibaba_otter_canal_protocol_Entry_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_com_alibaba_otter_canal_protocol_Header_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_com_alibaba_otter_canal_protocol_Header_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_com_alibaba_otter_canal_protocol_Column_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_com_alibaba_otter_canal_protocol_Column_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_com_alibaba_otter_canal_protocol_RowData_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_com_alibaba_otter_canal_protocol_RowChange_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_com_alibaba_otter_canal_protocol_Pair_fieldAccessorTable;
 
   public static com.google.protobuf.Descriptors.FileDescriptor
       getDescriptor() {
     return descriptor;
   }
-  private static com.google.protobuf.Descriptors.FileDescriptor
+  private static  com.google.protobuf.Descriptors.FileDescriptor
       descriptor;
   static {
-    String[] descriptorData = {
+    java.lang.String[] descriptorData = {
       "\n\023EntryProtocol.proto\022 com.alibaba.otter" +
-      ".canal.protocol\"\236\001\n\005Entry\0228\n\006header\030\001 \001(" +
+      ".canal.protocol\"\254\001\n\005Entry\0228\n\006header\030\001 \001(" +
       "\0132(.com.alibaba.otter.canal.protocol.Hea" +
-      "der\022G\n\tentryType\030\002 \001(\0162+.com.alibaba.ott" +
-      "er.canal.protocol.EntryType:\007ROWDATA\022\022\n\n" +
-      "storeValue\030\003 \001(\014\"\221\003\n\006Header\022\022\n\007version\030\001" +
-      " \001(\005:\0011\022\023\n\013logfileName\030\002 \001(\t\022\025\n\rlogfileO" +
-      "ffset\030\003 \001(\003\022\020\n\010serverId\030\004 \001(\003\022\024\n\014servere" +
-      "nCode\030\005 \001(\t\022\023\n\013executeTime\030\006 \001(\003\022A\n\nsour" +
-      "ceType\030\007 \001(\0162&.com.alibaba.otter.canal.p",
-      "rotocol.Type:\005MYSQL\022\022\n\nschemaName\030\010 \001(\t\022" +
-      "\021\n\ttableName\030\t \001(\t\022\023\n\013eventLength\030\n \001(\003\022" +
-      "F\n\teventType\030\013 \001(\0162+.com.alibaba.otter.c" +
-      "anal.protocol.EventType:\006UPDATE\0225\n\005props" +
-      "\030\014 \003(\0132&.com.alibaba.otter.canal.protoco" +
-      "l.Pair\022\014\n\004gtid\030\r \001(\t\"\326\001\n\006Column\022\r\n\005index" +
-      "\030\001 \001(\005\022\017\n\007sqlType\030\002 \001(\005\022\014\n\004name\030\003 \001(\t\022\r\n" +
-      "\005isKey\030\004 \001(\010\022\017\n\007updated\030\005 \001(\010\022\025\n\006isNull\030" +
-      "\006 \001(\010:\005false\0225\n\005props\030\007 \003(\0132&.com.alibab" +
-      "a.otter.canal.protocol.Pair\022\r\n\005value\030\010 \001",
-      "(\t\022\016\n\006length\030\t \001(\005\022\021\n\tmysqlType\030\n \001(\t\"\301\001" +
-      "\n\007RowData\022?\n\rbeforeColumns\030\001 \003(\0132(.com.a" +
-      "libaba.otter.canal.protocol.Column\022>\n\014af" +
-      "terColumns\030\002 \003(\0132(.com.alibaba.otter.can" +
-      "al.protocol.Column\0225\n\005props\030\003 \003(\0132&.com." +
-      "alibaba.otter.canal.protocol.Pair\"\222\002\n\tRo" +
-      "wChange\022\017\n\007tableId\030\001 \001(\003\022F\n\teventType\030\002 " +
-      "\001(\0162+.com.alibaba.otter.canal.protocol.E" +
-      "ventType:\006UPDATE\022\024\n\005isDdl\030\n \001(\010:\005false\022\013" +
-      "\n\003sql\030\013 \001(\t\022;\n\010rowDatas\030\014 \003(\0132).com.alib",
-      "aba.otter.canal.protocol.RowData\0225\n\005prop" +
-      "s\030\r \003(\0132&.com.alibaba.otter.canal.protoc" +
-      "ol.Pair\022\025\n\rddlSchemaName\030\016 \001(\t\"\207\001\n\020Trans" +
-      "actionBegin\022\023\n\013executeTime\030\001 \001(\003\022\025\n\rtran" +
-      "sactionId\030\002 \001(\t\0225\n\005props\030\003 \003(\0132&.com.ali" +
-      "baba.otter.canal.protocol.Pair\022\020\n\010thread" +
-      "Id\030\004 \001(\003\"s\n\016TransactionEnd\022\023\n\013executeTim" +
-      "e\030\001 \001(\003\022\025\n\rtransactionId\030\002 \001(\t\0225\n\005props\030" +
-      "\003 \003(\0132&.com.alibaba.otter.canal.protocol" +
-      ".Pair\"\"\n\004Pair\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(",
-      "\t*^\n\tEntryType\022\024\n\020TRANSACTIONBEGIN\020\001\022\013\n\007" +
-      "ROWDATA\020\002\022\022\n\016TRANSACTIONEND\020\003\022\r\n\tHEARTBE" +
-      "AT\020\004\022\013\n\007GTIDLOG\020\005*\306\001\n\tEventType\022\n\n\006INSER" +
-      "T\020\001\022\n\n\006UPDATE\020\002\022\n\n\006DELETE\020\003\022\n\n\006CREATE\020\004\022" +
-      "\t\n\005ALTER\020\005\022\t\n\005ERASE\020\006\022\t\n\005QUERY\020\007\022\014\n\010TRUN" +
-      "CATE\020\010\022\n\n\006RENAME\020\t\022\n\n\006CINDEX\020\n\022\n\n\006DINDEX" +
-      "\020\013\022\010\n\004GTID\020\014\022\014\n\010XACOMMIT\020\r\022\016\n\nXAROLLBACK" +
-      "\020\016\022\016\n\nMHEARTBEAT\020\017*(\n\004Type\022\n\n\006ORACLE\020\001\022\t" +
-      "\n\005MYSQL\020\002\022\t\n\005PGSQL\020\003B0\n com.alibaba.otte" +
-      "r.canal.protocolB\nCanalEntryH\001"
+      "der\022@\n\tentryType\030\002 \001(\0162+.com.alibaba.ott" +
+      "er.canal.protocol.EntryTypeH\000\022\022\n\nstoreVa" +
+      "lue\030\003 \001(\014B\023\n\021entryType_present\"\303\003\n\006Heade" +
+      "r\022\021\n\007version\030\001 \001(\005H\000\022\023\n\013logfileName\030\002 \001(" +
+      "\t\022\025\n\rlogfileOffset\030\003 \001(\003\022\020\n\010serverId\030\004 \001" +
+      "(\003\022\024\n\014serverenCode\030\005 \001(\t\022\023\n\013executeTime\030" +
+      "\006 \001(\003\022<\n\nsourceType\030\007 \001(\0162&.com.alibaba." +
+      "otter.canal.protocol.TypeH\001\022\022\n\nschemaNam" +
+      "e\030\010 \001(\t\022\021\n\ttableName\030\t \001(\t\022\023\n\013eventLengt" +
+      "h\030\n \001(\003\022@\n\teventType\030\013 \001(\0162+.com.alibaba" +
+      ".otter.canal.protocol.EventTypeH\002\0225\n\005pro" +
+      "ps\030\014 \003(\0132&.com.alibaba.otter.canal.proto" +
+      "col.Pair\022\014\n\004gtid\030\r \001(\tB\021\n\017version_presen" +
+      "tB\024\n\022sourceType_presentB\023\n\021eventType_pre" +
+      "sent\"\343\001\n\006Column\022\r\n\005index\030\001 \001(\005\022\017\n\007sqlTyp" +
+      "e\030\002 \001(\005\022\014\n\004name\030\003 \001(\t\022\r\n\005isKey\030\004 \001(\010\022\017\n\007" +
+      "updated\030\005 \001(\010\022\020\n\006isNull\030\006 \001(\010H\000\0225\n\005props" +
+      "\030\007 \003(\0132&.com.alibaba.otter.canal.protoco" +
+      "l.Pair\022\r\n\005value\030\010 \001(\t\022\016\n\006length\030\t \001(\005\022\021\n" +
+      "\tmysqlType\030\n \001(\tB\020\n\016isNull_present\"\301\001\n\007R" +
+      "owData\022?\n\rbeforeColumns\030\001 \003(\0132(.com.alib" +
+      "aba.otter.canal.protocol.Column\022>\n\014after" +
+      "Columns\030\002 \003(\0132(.com.alibaba.otter.canal." +
+      "protocol.Column\0225\n\005props\030\003 \003(\0132&.com.ali" +
+      "baba.otter.canal.protocol.Pair\"\255\002\n\tRowCh" +
+      "ange\022\017\n\007tableId\030\001 \001(\003\022@\n\teventType\030\002 \001(\016" +
+      "2+.com.alibaba.otter.canal.protocol.Even" +
+      "tTypeH\000\022\017\n\005isDdl\030\n \001(\010H\001\022\013\n\003sql\030\013 \001(\t\022;\n" +
+      "\010rowDatas\030\014 \003(\0132).com.alibaba.otter.cana" +
+      "l.protocol.RowData\0225\n\005props\030\r \003(\0132&.com." +
+      "alibaba.otter.canal.protocol.Pair\022\025\n\rddl" +
+      "SchemaName\030\016 \001(\tB\023\n\021eventType_presentB\017\n" +
+      "\risDdl_present\"\207\001\n\020TransactionBegin\022\023\n\013e" +
+      "xecuteTime\030\001 \001(\003\022\025\n\rtransactionId\030\002 \001(\t\022" +
+      "5\n\005props\030\003 \003(\0132&.com.alibaba.otter.canal" +
+      ".protocol.Pair\022\020\n\010threadId\030\004 \001(\003\"s\n\016Tran" +
+      "sactionEnd\022\023\n\013executeTime\030\001 \001(\003\022\025\n\rtrans" +
+      "actionId\030\002 \001(\t\0225\n\005props\030\003 \003(\0132&.com.alib" +
+      "aba.otter.canal.protocol.Pair\"\"\n\004Pair\022\013\n" +
+      "\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t*^\n\tEntryType\022\024" +
+      "\n\020TRANSACTIONBEGIN\020\000\022\013\n\007ROWDATA\020\001\022\022\n\016TRA" +
+      "NSACTIONEND\020\002\022\r\n\tHEARTBEAT\020\003\022\013\n\007GTIDLOG\020" +
+      "\004*\345\001\n\tEventType\022\035\n\031EVENTTYPECOMPATIBLEPR" +
+      "OTO2\020\000\022\n\n\006INSERT\020\001\022\n\n\006UPDATE\020\002\022\n\n\006DELETE" +
+      "\020\003\022\n\n\006CREATE\020\004\022\t\n\005ALTER\020\005\022\t\n\005ERASE\020\006\022\t\n\005" +
+      "QUERY\020\007\022\014\n\010TRUNCATE\020\010\022\n\n\006RENAME\020\t\022\n\n\006CIN" +
+      "DEX\020\n\022\n\n\006DINDEX\020\013\022\010\n\004GTID\020\014\022\014\n\010XACOMMIT\020" +
+      "\r\022\016\n\nXAROLLBACK\020\016\022\016\n\nMHEARTBEAT\020\017*B\n\004Typ" +
+      "e\022\030\n\024TYPECOMPATIBLEPROTO2\020\000\022\n\n\006ORACLE\020\001\022" +
+      "\t\n\005MYSQL\020\002\022\t\n\005PGSQL\020\003B0\n com.alibaba.ott" +
+      "er.canal.protocolB\nCanalEntryH\001b\006proto3"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
         new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
@@ -12788,51 +13321,51 @@ public final class CanalEntry {
     internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor =
       getDescriptor().getMessageTypes().get(0);
     internal_static_com_alibaba_otter_canal_protocol_Entry_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_com_alibaba_otter_canal_protocol_Entry_descriptor,
-        new String[] { "Header", "EntryType", "StoreValue", });
+        new java.lang.String[] { "Header", "EntryType", "StoreValue", "EntryTypePresent", });
     internal_static_com_alibaba_otter_canal_protocol_Header_descriptor =
       getDescriptor().getMessageTypes().get(1);
     internal_static_com_alibaba_otter_canal_protocol_Header_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_com_alibaba_otter_canal_protocol_Header_descriptor,
-        new String[] { "Version", "LogfileName", "LogfileOffset", "ServerId", "ServerenCode", "ExecuteTime", "SourceType", "SchemaName", "TableName", "EventLength", "EventType", "Props", "Gtid", });
+        new java.lang.String[] { "Version", "LogfileName", "LogfileOffset", "ServerId", "ServerenCode", "ExecuteTime", "SourceType", "SchemaName", "TableName", "EventLength", "EventType", "Props", "Gtid", "VersionPresent", "SourceTypePresent", "EventTypePresent", });
     internal_static_com_alibaba_otter_canal_protocol_Column_descriptor =
       getDescriptor().getMessageTypes().get(2);
     internal_static_com_alibaba_otter_canal_protocol_Column_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_com_alibaba_otter_canal_protocol_Column_descriptor,
-        new String[] { "Index", "SqlType", "Name", "IsKey", "Updated", "IsNull", "Props", "Value", "Length", "MysqlType", });
+        new java.lang.String[] { "Index", "SqlType", "Name", "IsKey", "Updated", "IsNull", "Props", "Value", "Length", "MysqlType", "IsNullPresent", });
     internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor =
       getDescriptor().getMessageTypes().get(3);
     internal_static_com_alibaba_otter_canal_protocol_RowData_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_com_alibaba_otter_canal_protocol_RowData_descriptor,
-        new String[] { "BeforeColumns", "AfterColumns", "Props", });
+        new java.lang.String[] { "BeforeColumns", "AfterColumns", "Props", });
     internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor =
       getDescriptor().getMessageTypes().get(4);
     internal_static_com_alibaba_otter_canal_protocol_RowChange_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_com_alibaba_otter_canal_protocol_RowChange_descriptor,
-        new String[] { "TableId", "EventType", "IsDdl", "Sql", "RowDatas", "Props", "DdlSchemaName", });
+        new java.lang.String[] { "TableId", "EventType", "IsDdl", "Sql", "RowDatas", "Props", "DdlSchemaName", "EventTypePresent", "IsDdlPresent", });
     internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor =
       getDescriptor().getMessageTypes().get(5);
     internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_com_alibaba_otter_canal_protocol_TransactionBegin_descriptor,
-        new String[] { "ExecuteTime", "TransactionId", "Props", "ThreadId", });
+        new java.lang.String[] { "ExecuteTime", "TransactionId", "Props", "ThreadId", });
     internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor =
       getDescriptor().getMessageTypes().get(6);
     internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_com_alibaba_otter_canal_protocol_TransactionEnd_descriptor,
-        new String[] { "ExecuteTime", "TransactionId", "Props", });
+        new java.lang.String[] { "ExecuteTime", "TransactionId", "Props", });
     internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor =
       getDescriptor().getMessageTypes().get(7);
     internal_static_com_alibaba_otter_canal_protocol_Pair_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_com_alibaba_otter_canal_protocol_Pair_descriptor,
-        new String[] { "Key", "Value", });
+        new java.lang.String[] { "Key", "Value", });
   }
 
   // @@protoc_insertion_point(outer_class_scope)
diff --git a/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalPacket.java b/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalPacket.java
index 3909668a..1e7e4e53 100644
--- a/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalPacket.java
+++ b/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalPacket.java
@@ -4,9847 +4,10990 @@
 package com.alibaba.otter.canal.protocol;
 
 public final class CanalPacket {
+  private CanalPacket() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
 
-    private CanalPacket(){
-    }
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  /**
+   * Protobuf enum {@code com.alibaba.otter.canal.protocol.Compression}
+   */
+  public enum Compression
+      implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>COMPRESSIONCOMPATIBLEPROTO2 = 0;</code>
+     */
+    COMPRESSIONCOMPATIBLEPROTO2(0),
+    /**
+     * <code>NONE = 1;</code>
+     */
+    NONE(1),
+    /**
+     * <code>ZLIB = 2;</code>
+     */
+    ZLIB(2),
+    /**
+     * <code>GZIP = 3;</code>
+     */
+    GZIP(3),
+    /**
+     * <code>LZF = 4;</code>
+     */
+    LZF(4),
+    UNRECOGNIZED(-1),
+    ;
 
-    public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry registry) {
+    /**
+     * <code>COMPRESSIONCOMPATIBLEPROTO2 = 0;</code>
+     */
+    public static final int COMPRESSIONCOMPATIBLEPROTO2_VALUE = 0;
+    /**
+     * <code>NONE = 1;</code>
+     */
+    public static final int NONE_VALUE = 1;
+    /**
+     * <code>ZLIB = 2;</code>
+     */
+    public static final int ZLIB_VALUE = 2;
+    /**
+     * <code>GZIP = 3;</code>
+     */
+    public static final int GZIP_VALUE = 3;
+    /**
+     * <code>LZF = 4;</code>
+     */
+    public static final int LZF_VALUE = 4;
+
+
+    public final int getNumber() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalArgumentException(
+            "Can't get the number of an unknown enum value.");
+      }
+      return value;
     }
 
     /**
-     * Protobuf enum {@code com.alibaba.otter.canal.protocol.Compression}
+     * @deprecated Use {@link #forNumber(int)} instead.
      */
-    public enum Compression implements com.google.protobuf.ProtocolMessageEnum {
-        /**
-         * <code>NONE = 1;</code>
-         */
-        NONE(0, 1),
-        /**
-         * <code>ZLIB = 2;</code>
-         */
-        ZLIB(1, 2),
-        /**
-         * <code>GZIP = 3;</code>
-         */
-        GZIP(2, 3),
-        /**
-         * <code>LZF = 4;</code>
-         */
-        LZF(3, 4), ;
+    @java.lang.Deprecated
+    public static Compression valueOf(int value) {
+      return forNumber(value);
+    }
 
-        /**
-         * <code>NONE = 1;</code>
-         */
-        public static final int NONE_VALUE = 1;
-        /**
-         * <code>ZLIB = 2;</code>
-         */
-        public static final int ZLIB_VALUE = 2;
-        /**
-         * <code>GZIP = 3;</code>
-         */
-        public static final int GZIP_VALUE = 3;
-        /**
-         * <code>LZF = 4;</code>
-         */
-        public static final int LZF_VALUE  = 4;
+    public static Compression forNumber(int value) {
+      switch (value) {
+        case 0: return COMPRESSIONCOMPATIBLEPROTO2;
+        case 1: return NONE;
+        case 2: return ZLIB;
+        case 3: return GZIP;
+        case 4: return LZF;
+        default: return null;
+      }
+    }
 
-        public final int getNumber() {
-            return value;
-        }
-
-        public static Compression valueOf(int value) {
-            switch (value) {
-                case 1:
-                    return NONE;
-                case 2:
-                    return ZLIB;
-                case 3:
-                    return GZIP;
-                case 4:
-                    return LZF;
-                default:
-                    return null;
+    public static com.google.protobuf.Internal.EnumLiteMap<Compression>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static final com.google.protobuf.Internal.EnumLiteMap<
+        Compression> internalValueMap =
+          new com.google.protobuf.Internal.EnumLiteMap<Compression>() {
+            public Compression findValueByNumber(int number) {
+              return Compression.forNumber(number);
             }
-        }
+          };
 
-        public static com.google.protobuf.Internal.EnumLiteMap<Compression> internalGetValueMap() {
-            return internalValueMap;
-        }
+    public final com.google.protobuf.Descriptors.EnumValueDescriptor
+        getValueDescriptor() {
+      return getDescriptor().getValues().get(ordinal());
+    }
+    public final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    public static final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.getDescriptor().getEnumTypes().get(0);
+    }
 
-        private static com.google.protobuf.Internal.EnumLiteMap<Compression> internalValueMap = new com.google.protobuf.Internal.EnumLiteMap<Compression>() {
+    private static final Compression[] VALUES = values();
 
-                                                                                                  public Compression findValueByNumber(int number) {
-                                                                                                      return Compression.valueOf(number);
-                                                                                                  }
-                                                                                              };
+    public static Compression valueOf(
+        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+      if (desc.getType() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "EnumValueDescriptor is not for this type.");
+      }
+      if (desc.getIndex() == -1) {
+        return UNRECOGNIZED;
+      }
+      return VALUES[desc.getIndex()];
+    }
 
-        public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor() {
-            return getDescriptor().getValues().get(index);
-        }
+    private final int value;
 
-        public final com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType() {
-            return getDescriptor();
-        }
+    private Compression(int value) {
+      this.value = value;
+    }
 
-        public static final com.google.protobuf.Descriptors.EnumDescriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.getDescriptor().getEnumTypes().get(0);
-        }
+    // @@protoc_insertion_point(enum_scope:com.alibaba.otter.canal.protocol.Compression)
+  }
 
-        private static final Compression[] VALUES = values();
+  /**
+   * Protobuf enum {@code com.alibaba.otter.canal.protocol.PacketType}
+   */
+  public enum PacketType
+      implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <pre>
+     *compatible
+     * </pre>
+     *
+     * <code>PACKAGETYPECOMPATIBLEPROTO2 = 0;</code>
+     */
+    PACKAGETYPECOMPATIBLEPROTO2(0),
+    /**
+     * <code>HANDSHAKE = 1;</code>
+     */
+    HANDSHAKE(1),
+    /**
+     * <code>CLIENTAUTHENTICATION = 2;</code>
+     */
+    CLIENTAUTHENTICATION(2),
+    /**
+     * <code>ACK = 3;</code>
+     */
+    ACK(3),
+    /**
+     * <code>SUBSCRIPTION = 4;</code>
+     */
+    SUBSCRIPTION(4),
+    /**
+     * <code>UNSUBSCRIPTION = 5;</code>
+     */
+    UNSUBSCRIPTION(5),
+    /**
+     * <code>GET = 6;</code>
+     */
+    GET(6),
+    /**
+     * <code>MESSAGES = 7;</code>
+     */
+    MESSAGES(7),
+    /**
+     * <code>CLIENTACK = 8;</code>
+     */
+    CLIENTACK(8),
+    /**
+     * <pre>
+     * management part
+     * </pre>
+     *
+     * <code>SHUTDOWN = 9;</code>
+     */
+    SHUTDOWN(9),
+    /**
+     * <pre>
+     * integration
+     * </pre>
+     *
+     * <code>DUMP = 10;</code>
+     */
+    DUMP(10),
+    /**
+     * <code>HEARTBEAT = 11;</code>
+     */
+    HEARTBEAT(11),
+    /**
+     * <code>CLIENTROLLBACK = 12;</code>
+     */
+    CLIENTROLLBACK(12),
+    UNRECOGNIZED(-1),
+    ;
 
-        public static Compression valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
-            if (desc.getType() != getDescriptor()) {
-                throw new java.lang.IllegalArgumentException("EnumValueDescriptor is not for this type.");
-            }
-            return VALUES[desc.getIndex()];
-        }
+    /**
+     * <pre>
+     *compatible
+     * </pre>
+     *
+     * <code>PACKAGETYPECOMPATIBLEPROTO2 = 0;</code>
+     */
+    public static final int PACKAGETYPECOMPATIBLEPROTO2_VALUE = 0;
+    /**
+     * <code>HANDSHAKE = 1;</code>
+     */
+    public static final int HANDSHAKE_VALUE = 1;
+    /**
+     * <code>CLIENTAUTHENTICATION = 2;</code>
+     */
+    public static final int CLIENTAUTHENTICATION_VALUE = 2;
+    /**
+     * <code>ACK = 3;</code>
+     */
+    public static final int ACK_VALUE = 3;
+    /**
+     * <code>SUBSCRIPTION = 4;</code>
+     */
+    public static final int SUBSCRIPTION_VALUE = 4;
+    /**
+     * <code>UNSUBSCRIPTION = 5;</code>
+     */
+    public static final int UNSUBSCRIPTION_VALUE = 5;
+    /**
+     * <code>GET = 6;</code>
+     */
+    public static final int GET_VALUE = 6;
+    /**
+     * <code>MESSAGES = 7;</code>
+     */
+    public static final int MESSAGES_VALUE = 7;
+    /**
+     * <code>CLIENTACK = 8;</code>
+     */
+    public static final int CLIENTACK_VALUE = 8;
+    /**
+     * <pre>
+     * management part
+     * </pre>
+     *
+     * <code>SHUTDOWN = 9;</code>
+     */
+    public static final int SHUTDOWN_VALUE = 9;
+    /**
+     * <pre>
+     * integration
+     * </pre>
+     *
+     * <code>DUMP = 10;</code>
+     */
+    public static final int DUMP_VALUE = 10;
+    /**
+     * <code>HEARTBEAT = 11;</code>
+     */
+    public static final int HEARTBEAT_VALUE = 11;
+    /**
+     * <code>CLIENTROLLBACK = 12;</code>
+     */
+    public static final int CLIENTROLLBACK_VALUE = 12;
 
-        private final int index;
-        private final int value;
 
-        private Compression(int index, int value){
-            this.index = index;
-            this.value = value;
-        }
-
-        // @@protoc_insertion_point(enum_scope:com.alibaba.otter.canal.protocol.Compression)
+    public final int getNumber() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalArgumentException(
+            "Can't get the number of an unknown enum value.");
+      }
+      return value;
     }
 
     /**
-     * Protobuf enum {@code com.alibaba.otter.canal.protocol.PacketType}
+     * @deprecated Use {@link #forNumber(int)} instead.
      */
-    public enum PacketType implements com.google.protobuf.ProtocolMessageEnum {
-        /**
-         * <code>HANDSHAKE = 1;</code>
-         */
-        HANDSHAKE(0, 1),
-        /**
-         * <code>CLIENTAUTHENTICATION = 2;</code>
-         */
-        CLIENTAUTHENTICATION(1, 2),
-        /**
-         * <code>ACK = 3;</code>
-         */
-        ACK(2, 3),
-        /**
-         * <code>SUBSCRIPTION = 4;</code>
-         */
-        SUBSCRIPTION(3, 4),
-        /**
-         * <code>UNSUBSCRIPTION = 5;</code>
-         */
-        UNSUBSCRIPTION(4, 5),
-        /**
-         * <code>GET = 6;</code>
-         */
-        GET(5, 6),
-        /**
-         * <code>MESSAGES = 7;</code>
-         */
-        MESSAGES(6, 7),
-        /**
-         * <code>CLIENTACK = 8;</code>
-         */
-        CLIENTACK(7, 8),
-        /**
-         * <code>SHUTDOWN = 9;</code>
-         *
-         * <pre>
-         * management part
-         * </pre>
-         */
-        SHUTDOWN(8, 9),
-        /**
-         * <code>DUMP = 10;</code>
-         *
-         * <pre>
-         * integration
-         * </pre>
-         */
-        DUMP(9, 10),
-        /**
-         * <code>HEARTBEAT = 11;</code>
-         */
-        HEARTBEAT(10, 11),
-        /**
-         * <code>CLIENTROLLBACK = 12;</code>
-         */
-        CLIENTROLLBACK(11, 12), ;
-
-        /**
-         * <code>HANDSHAKE = 1;</code>
-         */
-        public static final int HANDSHAKE_VALUE            = 1;
-        /**
-         * <code>CLIENTAUTHENTICATION = 2;</code>
-         */
-        public static final int CLIENTAUTHENTICATION_VALUE = 2;
-        /**
-         * <code>ACK = 3;</code>
-         */
-        public static final int ACK_VALUE                  = 3;
-        /**
-         * <code>SUBSCRIPTION = 4;</code>
-         */
-        public static final int SUBSCRIPTION_VALUE         = 4;
-        /**
-         * <code>UNSUBSCRIPTION = 5;</code>
-         */
-        public static final int UNSUBSCRIPTION_VALUE       = 5;
-        /**
-         * <code>GET = 6;</code>
-         */
-        public static final int GET_VALUE                  = 6;
-        /**
-         * <code>MESSAGES = 7;</code>
-         */
-        public static final int MESSAGES_VALUE             = 7;
-        /**
-         * <code>CLIENTACK = 8;</code>
-         */
-        public static final int CLIENTACK_VALUE            = 8;
-        /**
-         * <code>SHUTDOWN = 9;</code>
-         *
-         * <pre>
-         * management part
-         * </pre>
-         */
-        public static final int SHUTDOWN_VALUE             = 9;
-        /**
-         * <code>DUMP = 10;</code>
-         *
-         * <pre>
-         * integration
-         * </pre>
-         */
-        public static final int DUMP_VALUE                 = 10;
-        /**
-         * <code>HEARTBEAT = 11;</code>
-         */
-        public static final int HEARTBEAT_VALUE            = 11;
-        /**
-         * <code>CLIENTROLLBACK = 12;</code>
-         */
-        public static final int CLIENTROLLBACK_VALUE       = 12;
-
-        public final int getNumber() {
-            return value;
-        }
-
-        public static PacketType valueOf(int value) {
-            switch (value) {
-                case 1:
-                    return HANDSHAKE;
-                case 2:
-                    return CLIENTAUTHENTICATION;
-                case 3:
-                    return ACK;
-                case 4:
-                    return SUBSCRIPTION;
-                case 5:
-                    return UNSUBSCRIPTION;
-                case 6:
-                    return GET;
-                case 7:
-                    return MESSAGES;
-                case 8:
-                    return CLIENTACK;
-                case 9:
-                    return SHUTDOWN;
-                case 10:
-                    return DUMP;
-                case 11:
-                    return HEARTBEAT;
-                case 12:
-                    return CLIENTROLLBACK;
-                default:
-                    return null;
-            }
-        }
-
-        public static com.google.protobuf.Internal.EnumLiteMap<PacketType> internalGetValueMap() {
-            return internalValueMap;
-        }
-
-        private static com.google.protobuf.Internal.EnumLiteMap<PacketType> internalValueMap = new com.google.protobuf.Internal.EnumLiteMap<PacketType>() {
-
-                                                                                                 public PacketType findValueByNumber(int number) {
-                                                                                                     return PacketType.valueOf(number);
-                                                                                                 }
-                                                                                             };
-
-        public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor() {
-            return getDescriptor().getValues().get(index);
-        }
-
-        public final com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType() {
-            return getDescriptor();
-        }
-
-        public static final com.google.protobuf.Descriptors.EnumDescriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.getDescriptor().getEnumTypes().get(1);
-        }
-
-        private static final PacketType[] VALUES = values();
-
-        public static PacketType valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
-            if (desc.getType() != getDescriptor()) {
-                throw new java.lang.IllegalArgumentException("EnumValueDescriptor is not for this type.");
-            }
-            return VALUES[desc.getIndex()];
-        }
-
-        private final int index;
-        private final int value;
-
-        private PacketType(int index, int value){
-            this.index = index;
-            this.value = value;
-        }
-
-        // @@protoc_insertion_point(enum_scope:com.alibaba.otter.canal.protocol.PacketType)
+    @java.lang.Deprecated
+    public static PacketType valueOf(int value) {
+      return forNumber(value);
     }
 
-    public interface PacketOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Packet)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional int32 magic_number = 1 [default = 17];</code>
-         */
-        boolean hasMagicNumber();
-
-        /**
-         * <code>optional int32 magic_number = 1 [default = 17];</code>
-         */
-        int getMagicNumber();
-
-        /**
-         * <code>optional int32 version = 2 [default = 1];</code>
-         */
-        boolean hasVersion();
-
-        /**
-         * <code>optional int32 version = 2 [default = 1];</code>
-         */
-        int getVersion();
-
-        /**
-         * <code>optional .com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
-         */
-        boolean hasType();
-
-        /**
-         * <code>optional .com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
-         */
-        com.alibaba.otter.canal.protocol.CanalPacket.PacketType getType();
-
-        /**
-         * <code>optional .com.alibaba.otter.canal.protocol.Compression compression = 4 [default = NONE];</code>
-         */
-        boolean hasCompression();
-
-        /**
-         * <code>optional .com.alibaba.otter.canal.protocol.Compression compression = 4 [default = NONE];</code>
-         */
-        com.alibaba.otter.canal.protocol.CanalPacket.Compression getCompression();
-
-        /**
-         * <code>optional bytes body = 5;</code>
-         */
-        boolean hasBody();
-
-        /**
-         * <code>optional bytes body = 5;</code>
-         */
-        com.google.protobuf.ByteString getBody();
+    public static PacketType forNumber(int value) {
+      switch (value) {
+        case 0: return PACKAGETYPECOMPATIBLEPROTO2;
+        case 1: return HANDSHAKE;
+        case 2: return CLIENTAUTHENTICATION;
+        case 3: return ACK;
+        case 4: return SUBSCRIPTION;
+        case 5: return UNSUBSCRIPTION;
+        case 6: return GET;
+        case 7: return MESSAGES;
+        case 8: return CLIENTACK;
+        case 9: return SHUTDOWN;
+        case 10: return DUMP;
+        case 11: return HEARTBEAT;
+        case 12: return CLIENTROLLBACK;
+        default: return null;
+      }
     }
 
+    public static com.google.protobuf.Internal.EnumLiteMap<PacketType>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static final com.google.protobuf.Internal.EnumLiteMap<
+        PacketType> internalValueMap =
+          new com.google.protobuf.Internal.EnumLiteMap<PacketType>() {
+            public PacketType findValueByNumber(int number) {
+              return PacketType.forNumber(number);
+            }
+          };
+
+    public final com.google.protobuf.Descriptors.EnumValueDescriptor
+        getValueDescriptor() {
+      return getDescriptor().getValues().get(ordinal());
+    }
+    public final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    public static final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.getDescriptor().getEnumTypes().get(1);
+    }
+
+    private static final PacketType[] VALUES = values();
+
+    public static PacketType valueOf(
+        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+      if (desc.getType() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "EnumValueDescriptor is not for this type.");
+      }
+      if (desc.getIndex() == -1) {
+        return UNRECOGNIZED;
+      }
+      return VALUES[desc.getIndex()];
+    }
+
+    private final int value;
+
+    private PacketType(int value) {
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:com.alibaba.otter.canal.protocol.PacketType)
+  }
+
+  public interface PacketOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Packet)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>int32 magic_number = 1;</code>
+     */
+    int getMagicNumber();
+
+    /**
+     * <code>int32 version = 2;</code>
+     */
+    int getVersion();
+
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+     */
+    int getTypeValue();
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+     */
+    com.alibaba.otter.canal.protocol.CanalPacket.PacketType getType();
+
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+     */
+    int getCompressionValue();
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+     */
+    com.alibaba.otter.canal.protocol.CanalPacket.Compression getCompression();
+
+    /**
+     * <code>bytes body = 5;</code>
+     */
+    com.google.protobuf.ByteString getBody();
+
+    public com.alibaba.otter.canal.protocol.CanalPacket.Packet.MagicNumberPresentCase getMagicNumberPresentCase();
+
+    public com.alibaba.otter.canal.protocol.CanalPacket.Packet.VersionPresentCase getVersionPresentCase();
+
+    public com.alibaba.otter.canal.protocol.CanalPacket.Packet.CompressionPresentCase getCompressionPresentCase();
+  }
+  /**
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Packet}
+   */
+  public  static final class Packet extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Packet)
+      PacketOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use Packet.newBuilder() to construct.
+    private Packet(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private Packet() {
+      type_ = 0;
+      body_ = com.google.protobuf.ByteString.EMPTY;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Packet(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 8: {
+              magicNumberPresentCase_ = 1;
+              magicNumberPresent_ = input.readInt32();
+              break;
+            }
+            case 16: {
+              versionPresentCase_ = 2;
+              versionPresent_ = input.readInt32();
+              break;
+            }
+            case 24: {
+              int rawValue = input.readEnum();
+
+              type_ = rawValue;
+              break;
+            }
+            case 32: {
+              int rawValue = input.readEnum();
+              compressionPresentCase_ = 4;
+              compressionPresent_ = rawValue;
+              break;
+            }
+            case 42: {
+
+              body_ = input.readBytes();
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.Packet.class, com.alibaba.otter.canal.protocol.CanalPacket.Packet.Builder.class);
+    }
+
+    private int magicNumberPresentCase_ = 0;
+    private java.lang.Object magicNumberPresent_;
+    public enum MagicNumberPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      MAGIC_NUMBER(1),
+      MAGICNUMBERPRESENT_NOT_SET(0);
+      private final int value;
+      private MagicNumberPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static MagicNumberPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static MagicNumberPresentCase forNumber(int value) {
+        switch (value) {
+          case 1: return MAGIC_NUMBER;
+          case 0: return MAGICNUMBERPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public MagicNumberPresentCase
+    getMagicNumberPresentCase() {
+      return MagicNumberPresentCase.forNumber(
+          magicNumberPresentCase_);
+    }
+
+    private int versionPresentCase_ = 0;
+    private java.lang.Object versionPresent_;
+    public enum VersionPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      VERSION(2),
+      VERSIONPRESENT_NOT_SET(0);
+      private final int value;
+      private VersionPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static VersionPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static VersionPresentCase forNumber(int value) {
+        switch (value) {
+          case 2: return VERSION;
+          case 0: return VERSIONPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public VersionPresentCase
+    getVersionPresentCase() {
+      return VersionPresentCase.forNumber(
+          versionPresentCase_);
+    }
+
+    private int compressionPresentCase_ = 0;
+    private java.lang.Object compressionPresent_;
+    public enum CompressionPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      COMPRESSION(4),
+      COMPRESSIONPRESENT_NOT_SET(0);
+      private final int value;
+      private CompressionPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static CompressionPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static CompressionPresentCase forNumber(int value) {
+        switch (value) {
+          case 4: return COMPRESSION;
+          case 0: return COMPRESSIONPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public CompressionPresentCase
+    getCompressionPresentCase() {
+      return CompressionPresentCase.forNumber(
+          compressionPresentCase_);
+    }
+
+    public static final int MAGIC_NUMBER_FIELD_NUMBER = 1;
+    /**
+     * <code>int32 magic_number = 1;</code>
+     */
+    public int getMagicNumber() {
+      if (magicNumberPresentCase_ == 1) {
+        return (java.lang.Integer) magicNumberPresent_;
+      }
+      return 0;
+    }
+
+    public static final int VERSION_FIELD_NUMBER = 2;
+    /**
+     * <code>int32 version = 2;</code>
+     */
+    public int getVersion() {
+      if (versionPresentCase_ == 2) {
+        return (java.lang.Integer) versionPresent_;
+      }
+      return 1;
+    }
+
+    public static final int TYPE_FIELD_NUMBER = 3;
+    private int type_;
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+     */
+    public int getTypeValue() {
+      return type_;
+    }
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+     */
+    public com.alibaba.otter.canal.protocol.CanalPacket.PacketType getType() {
+      @SuppressWarnings("deprecation")
+      com.alibaba.otter.canal.protocol.CanalPacket.PacketType result = com.alibaba.otter.canal.protocol.CanalPacket.PacketType.valueOf(type_);
+      return result == null ? com.alibaba.otter.canal.protocol.CanalPacket.PacketType.UNRECOGNIZED : result;
+    }
+
+    public static final int COMPRESSION_FIELD_NUMBER = 4;
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+     */
+    public int getCompressionValue() {
+      if (compressionPresentCase_ == 4) {
+        return (java.lang.Integer) compressionPresent_;
+      }
+      return Compression.NONE_VALUE;
+    }
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+     */
+    public com.alibaba.otter.canal.protocol.CanalPacket.Compression getCompression() {
+      if (compressionPresentCase_ == 4) {
+        @SuppressWarnings("deprecation")
+        com.alibaba.otter.canal.protocol.CanalPacket.Compression result = com.alibaba.otter.canal.protocol.CanalPacket.Compression.valueOf(
+            (java.lang.Integer) compressionPresent_);
+        return result == null ? com.alibaba.otter.canal.protocol.CanalPacket.Compression.UNRECOGNIZED : result;
+      }
+      return com.alibaba.otter.canal.protocol.CanalPacket.Compression.COMPRESSIONCOMPATIBLEPROTO2;
+    }
+
+    public static final int BODY_FIELD_NUMBER = 5;
+    private com.google.protobuf.ByteString body_;
+    /**
+     * <code>bytes body = 5;</code>
+     */
+    public com.google.protobuf.ByteString getBody() {
+      return body_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (magicNumberPresentCase_ == 1) {
+        output.writeInt32(
+            1, (int)((java.lang.Integer) magicNumberPresent_));
+      }
+      if (versionPresentCase_ == 2) {
+        output.writeInt32(
+            2, (int)((java.lang.Integer) versionPresent_));
+      }
+      if (type_ != com.alibaba.otter.canal.protocol.CanalPacket.PacketType.PACKAGETYPECOMPATIBLEPROTO2.getNumber()) {
+        output.writeEnum(3, type_);
+      }
+      if (compressionPresentCase_ == 4) {
+        output.writeEnum(4, ((java.lang.Integer) compressionPresent_));
+      }
+      if (!body_.isEmpty()) {
+        output.writeBytes(5, body_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (magicNumberPresentCase_ == 1) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(
+              1, (int)((java.lang.Integer) magicNumberPresent_));
+      }
+      if (versionPresentCase_ == 2) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(
+              2, (int)((java.lang.Integer) versionPresent_));
+      }
+      if (type_ != com.alibaba.otter.canal.protocol.CanalPacket.PacketType.PACKAGETYPECOMPATIBLEPROTO2.getNumber()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(3, type_);
+      }
+      if (compressionPresentCase_ == 4) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(4, ((java.lang.Integer) compressionPresent_));
+      }
+      if (!body_.isEmpty()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(5, body_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.Packet)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.Packet other = (com.alibaba.otter.canal.protocol.CanalPacket.Packet) obj;
+
+      boolean result = true;
+      result = result && type_ == other.type_;
+      result = result && getBody()
+          .equals(other.getBody());
+      result = result && getMagicNumberPresentCase().equals(
+          other.getMagicNumberPresentCase());
+      if (!result) return false;
+      switch (magicNumberPresentCase_) {
+        case 1:
+          result = result && (getMagicNumber()
+              == other.getMagicNumber());
+          break;
+        case 0:
+        default:
+      }
+      result = result && getVersionPresentCase().equals(
+          other.getVersionPresentCase());
+      if (!result) return false;
+      switch (versionPresentCase_) {
+        case 2:
+          result = result && (getVersion()
+              == other.getVersion());
+          break;
+        case 0:
+        default:
+      }
+      result = result && getCompressionPresentCase().equals(
+          other.getCompressionPresentCase());
+      if (!result) return false;
+      switch (compressionPresentCase_) {
+        case 4:
+          result = result && getCompressionValue()
+              == other.getCompressionValue();
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + TYPE_FIELD_NUMBER;
+      hash = (53 * hash) + type_;
+      hash = (37 * hash) + BODY_FIELD_NUMBER;
+      hash = (53 * hash) + getBody().hashCode();
+      switch (magicNumberPresentCase_) {
+        case 1:
+          hash = (37 * hash) + MAGIC_NUMBER_FIELD_NUMBER;
+          hash = (53 * hash) + getMagicNumber();
+          break;
+        case 0:
+        default:
+      }
+      switch (versionPresentCase_) {
+        case 2:
+          hash = (37 * hash) + VERSION_FIELD_NUMBER;
+          hash = (53 * hash) + getVersion();
+          break;
+        case 0:
+        default:
+      }
+      switch (compressionPresentCase_) {
+        case 4:
+          hash = (37 * hash) + COMPRESSION_FIELD_NUMBER;
+          hash = (53 * hash) + getCompressionValue();
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Packet prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
      * Protobuf type {@code com.alibaba.otter.canal.protocol.Packet}
      */
-    public static final class Packet extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Packet)
-    PacketOrBuilder {
-
-        // Use Packet.newBuilder() to construct.
-        private Packet(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private Packet(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final Packet defaultInstance;
-
-        public static Packet getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public Packet getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private Packet(com.google.protobuf.CodedInputStream input,
-                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                   throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 8: {
-                            bitField0_ |= 0x00000001;
-                            magicNumber_ = input.readInt32();
-                            break;
-                        }
-                        case 16: {
-                            bitField0_ |= 0x00000002;
-                            version_ = input.readInt32();
-                            break;
-                        }
-                        case 24: {
-                            int rawValue = input.readEnum();
-                            com.alibaba.otter.canal.protocol.CanalPacket.PacketType value = com.alibaba.otter.canal.protocol.CanalPacket.PacketType.valueOf(rawValue);
-                            if (value == null) {
-                                unknownFields.mergeVarintField(3, rawValue);
-                            } else {
-                                bitField0_ |= 0x00000004;
-                                type_ = value;
-                            }
-                            break;
-                        }
-                        case 32: {
-                            int rawValue = input.readEnum();
-                            com.alibaba.otter.canal.protocol.CanalPacket.Compression value = com.alibaba.otter.canal.protocol.CanalPacket.Compression.valueOf(rawValue);
-                            if (value == null) {
-                                unknownFields.mergeVarintField(4, rawValue);
-                            } else {
-                                bitField0_ |= 0x00000008;
-                                compression_ = value;
-                            }
-                            break;
-                        }
-                        case 42: {
-                            bitField0_ |= 0x00000010;
-                            body_ = input.readBytes();
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Packet.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.Packet.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<Packet> PARSER = new com.google.protobuf.AbstractParser<Packet>() {
-
-                                                                    public Packet parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                                   com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                               throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                        return new Packet(input, extensionRegistry);
-                                                                    }
-                                                                };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<Packet> getParserForType() {
-            return PARSER;
-        }
-
-        private int             bitField0_;
-        public static final int MAGIC_NUMBER_FIELD_NUMBER = 1;
-        private int             magicNumber_;
-
-        /**
-         * <code>optional int32 magic_number = 1 [default = 17];</code>
-         */
-        public boolean hasMagicNumber() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional int32 magic_number = 1 [default = 17];</code>
-         */
-        public int getMagicNumber() {
-            return magicNumber_;
-        }
-
-        public static final int VERSION_FIELD_NUMBER = 2;
-        private int             version_;
-
-        /**
-         * <code>optional int32 version = 2 [default = 1];</code>
-         */
-        public boolean hasVersion() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional int32 version = 2 [default = 1];</code>
-         */
-        public int getVersion() {
-            return version_;
-        }
-
-        public static final int                                         TYPE_FIELD_NUMBER = 3;
-        private com.alibaba.otter.canal.protocol.CanalPacket.PacketType type_;
-
-        /**
-         * <code>optional .com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
-         */
-        public boolean hasType() {
-            return ((bitField0_ & 0x00000004) == 0x00000004);
-        }
-
-        /**
-         * <code>optional .com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
-         */
-        public com.alibaba.otter.canal.protocol.CanalPacket.PacketType getType() {
-            return type_;
-        }
-
-        public static final int                                          COMPRESSION_FIELD_NUMBER = 4;
-        private com.alibaba.otter.canal.protocol.CanalPacket.Compression compression_;
-
-        /**
-         * <code>optional .com.alibaba.otter.canal.protocol.Compression compression = 4 [default = NONE];</code>
-         */
-        public boolean hasCompression() {
-            return ((bitField0_ & 0x00000008) == 0x00000008);
-        }
-
-        /**
-         * <code>optional .com.alibaba.otter.canal.protocol.Compression compression = 4 [default = NONE];</code>
-         */
-        public com.alibaba.otter.canal.protocol.CanalPacket.Compression getCompression() {
-            return compression_;
-        }
-
-        public static final int                BODY_FIELD_NUMBER = 5;
-        private com.google.protobuf.ByteString body_;
-
-        /**
-         * <code>optional bytes body = 5;</code>
-         */
-        public boolean hasBody() {
-            return ((bitField0_ & 0x00000010) == 0x00000010);
-        }
-
-        /**
-         * <code>optional bytes body = 5;</code>
-         */
-        public com.google.protobuf.ByteString getBody() {
-            return body_;
-        }
-
-        private void initFields() {
-            magicNumber_ = 17;
-            version_ = 1;
-            type_ = com.alibaba.otter.canal.protocol.CanalPacket.PacketType.HANDSHAKE;
-            compression_ = com.alibaba.otter.canal.protocol.CanalPacket.Compression.NONE;
-            body_ = com.google.protobuf.ByteString.EMPTY;
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeInt32(1, magicNumber_);
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeInt32(2, version_);
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                output.writeEnum(3, type_.getNumber());
-            }
-            if (((bitField0_ & 0x00000008) == 0x00000008)) {
-                output.writeEnum(4, compression_.getNumber());
-            }
-            if (((bitField0_ & 0x00000010) == 0x00000010)) {
-                output.writeBytes(5, body_);
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt32Size(1, magicNumber_);
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt32Size(2, version_);
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                size += com.google.protobuf.CodedOutputStream.computeEnumSize(3, type_.getNumber());
-            }
-            if (((bitField0_ & 0x00000008) == 0x00000008)) {
-                size += com.google.protobuf.CodedOutputStream.computeEnumSize(4, compression_.getNumber());
-            }
-            if (((bitField0_ & 0x00000010) == 0x00000010)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(5, body_);
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                        throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(com.google.protobuf.ByteString data,
-                                                                                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(byte[] data)
-                                                                                                throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(byte[] data,
-                                                                                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(java.io.InputStream input)
-                                                                                                              throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(java.io.InputStream input,
-                                                                                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                       throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseDelimitedFrom(java.io.InputStream input,
-                                                                                             com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                         throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                               throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Packet parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Packet prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.Packet}
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Packet)
         com.alibaba.otter.canal.protocol.CanalPacket.PacketOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.Packet.class, com.alibaba.otter.canal.protocol.CanalPacket.Packet.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Packet.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.Packet.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.Packet.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.Packet.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                magicNumber_ = 17;
-                bitField0_ = (bitField0_ & ~0x00000001);
-                version_ = 1;
-                bitField0_ = (bitField0_ & ~0x00000002);
-                type_ = com.alibaba.otter.canal.protocol.CanalPacket.PacketType.HANDSHAKE;
-                bitField0_ = (bitField0_ & ~0x00000004);
-                compression_ = com.alibaba.otter.canal.protocol.CanalPacket.Compression.NONE;
-                bitField0_ = (bitField0_ & ~0x00000008);
-                body_ = com.google.protobuf.ByteString.EMPTY;
-                bitField0_ = (bitField0_ & ~0x00000010);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Packet getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.Packet.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Packet build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Packet result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Packet buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Packet result = new com.alibaba.otter.canal.protocol.CanalPacket.Packet(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.magicNumber_ = magicNumber_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.version_ = version_;
-                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-                    to_bitField0_ |= 0x00000004;
-                }
-                result.type_ = type_;
-                if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-                    to_bitField0_ |= 0x00000008;
-                }
-                result.compression_ = compression_;
-                if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
-                    to_bitField0_ |= 0x00000010;
-                }
-                result.body_ = body_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Packet) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Packet) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Packet other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.Packet.getDefaultInstance()) return this;
-                if (other.hasMagicNumber()) {
-                    setMagicNumber(other.getMagicNumber());
-                }
-                if (other.hasVersion()) {
-                    setVersion(other.getVersion());
-                }
-                if (other.hasType()) {
-                    setType(other.getType());
-                }
-                if (other.hasCompression()) {
-                    setCompression(other.getCompression());
-                }
-                if (other.hasBody()) {
-                    setBody(other.getBody());
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.Packet parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Packet) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int bitField0_;
-
-            private int magicNumber_ = 17;
-
-            /**
-             * <code>optional int32 magic_number = 1 [default = 17];</code>
-             */
-            public boolean hasMagicNumber() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional int32 magic_number = 1 [default = 17];</code>
-             */
-            public int getMagicNumber() {
-                return magicNumber_;
-            }
-
-            /**
-             * <code>optional int32 magic_number = 1 [default = 17];</code>
-             */
-            public Builder setMagicNumber(int value) {
-                bitField0_ |= 0x00000001;
-                magicNumber_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int32 magic_number = 1 [default = 17];</code>
-             */
-            public Builder clearMagicNumber() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                magicNumber_ = 17;
-                onChanged();
-                return this;
-            }
-
-            private int version_ = 1;
-
-            /**
-             * <code>optional int32 version = 2 [default = 1];</code>
-             */
-            public boolean hasVersion() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional int32 version = 2 [default = 1];</code>
-             */
-            public int getVersion() {
-                return version_;
-            }
-
-            /**
-             * <code>optional int32 version = 2 [default = 1];</code>
-             */
-            public Builder setVersion(int value) {
-                bitField0_ |= 0x00000002;
-                version_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int32 version = 2 [default = 1];</code>
-             */
-            public Builder clearVersion() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                version_ = 1;
-                onChanged();
-                return this;
-            }
-
-            private com.alibaba.otter.canal.protocol.CanalPacket.PacketType type_ = com.alibaba.otter.canal.protocol.CanalPacket.PacketType.HANDSHAKE;
-
-            /**
-             * <code>optional .com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
-             */
-            public boolean hasType() {
-                return ((bitField0_ & 0x00000004) == 0x00000004);
-            }
-
-            /**
-             * <code>optional .com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
-             */
-            public com.alibaba.otter.canal.protocol.CanalPacket.PacketType getType() {
-                return type_;
-            }
-
-            /**
-             * <code>optional .com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
-             */
-            public Builder setType(com.alibaba.otter.canal.protocol.CanalPacket.PacketType value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000004;
-                type_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional .com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
-             */
-            public Builder clearType() {
-                bitField0_ = (bitField0_ & ~0x00000004);
-                type_ = com.alibaba.otter.canal.protocol.CanalPacket.PacketType.HANDSHAKE;
-                onChanged();
-                return this;
-            }
-
-            private com.alibaba.otter.canal.protocol.CanalPacket.Compression compression_ = com.alibaba.otter.canal.protocol.CanalPacket.Compression.NONE;
-
-            /**
-             * <code>optional .com.alibaba.otter.canal.protocol.Compression compression = 4 [default = NONE];</code>
-             */
-            public boolean hasCompression() {
-                return ((bitField0_ & 0x00000008) == 0x00000008);
-            }
-
-            /**
-             * <code>optional .com.alibaba.otter.canal.protocol.Compression compression = 4 [default = NONE];</code>
-             */
-            public com.alibaba.otter.canal.protocol.CanalPacket.Compression getCompression() {
-                return compression_;
-            }
-
-            /**
-             * <code>optional .com.alibaba.otter.canal.protocol.Compression compression = 4 [default = NONE];</code>
-             */
-            public Builder setCompression(com.alibaba.otter.canal.protocol.CanalPacket.Compression value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000008;
-                compression_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional .com.alibaba.otter.canal.protocol.Compression compression = 4 [default = NONE];</code>
-             */
-            public Builder clearCompression() {
-                bitField0_ = (bitField0_ & ~0x00000008);
-                compression_ = com.alibaba.otter.canal.protocol.CanalPacket.Compression.NONE;
-                onChanged();
-                return this;
-            }
-
-            private com.google.protobuf.ByteString body_ = com.google.protobuf.ByteString.EMPTY;
-
-            /**
-             * <code>optional bytes body = 5;</code>
-             */
-            public boolean hasBody() {
-                return ((bitField0_ & 0x00000010) == 0x00000010);
-            }
-
-            /**
-             * <code>optional bytes body = 5;</code>
-             */
-            public com.google.protobuf.ByteString getBody() {
-                return body_;
-            }
-
-            /**
-             * <code>optional bytes body = 5;</code>
-             */
-            public Builder setBody(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000010;
-                body_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional bytes body = 5;</code>
-             */
-            public Builder clearBody() {
-                bitField0_ = (bitField0_ & ~0x00000010);
-                body_ = getDefaultInstance().getBody();
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Packet)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        type_ = 0;
 
-        static {
-            defaultInstance = new Packet(true);
-            defaultInstance.initFields();
+        body_ = com.google.protobuf.ByteString.EMPTY;
+
+        magicNumberPresentCase_ = 0;
+        magicNumberPresent_ = null;
+        versionPresentCase_ = 0;
+        versionPresent_ = null;
+        compressionPresentCase_ = 0;
+        compressionPresent_ = null;
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Packet getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.Packet.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Packet build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Packet result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Packet)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Packet buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Packet result = new com.alibaba.otter.canal.protocol.CanalPacket.Packet(this);
+        if (magicNumberPresentCase_ == 1) {
+          result.magicNumberPresent_ = magicNumberPresent_;
+        }
+        if (versionPresentCase_ == 2) {
+          result.versionPresent_ = versionPresent_;
+        }
+        result.type_ = type_;
+        if (compressionPresentCase_ == 4) {
+          result.compressionPresent_ = compressionPresent_;
+        }
+        result.body_ = body_;
+        result.magicNumberPresentCase_ = magicNumberPresentCase_;
+        result.versionPresentCase_ = versionPresentCase_;
+        result.compressionPresentCase_ = compressionPresentCase_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Packet) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Packet)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Packet other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.Packet.getDefaultInstance()) return this;
+        if (other.type_ != 0) {
+          setTypeValue(other.getTypeValue());
+        }
+        if (other.getBody() != com.google.protobuf.ByteString.EMPTY) {
+          setBody(other.getBody());
+        }
+        switch (other.getMagicNumberPresentCase()) {
+          case MAGIC_NUMBER: {
+            setMagicNumber(other.getMagicNumber());
+            break;
+          }
+          case MAGICNUMBERPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        switch (other.getVersionPresentCase()) {
+          case VERSION: {
+            setVersion(other.getVersion());
+            break;
+          }
+          case VERSIONPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        switch (other.getCompressionPresentCase()) {
+          case COMPRESSION: {
+            setCompressionValue(other.getCompressionValue());
+            break;
+          }
+          case COMPRESSIONPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.Packet parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Packet) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int magicNumberPresentCase_ = 0;
+      private java.lang.Object magicNumberPresent_;
+      public MagicNumberPresentCase
+          getMagicNumberPresentCase() {
+        return MagicNumberPresentCase.forNumber(
+            magicNumberPresentCase_);
+      }
+
+      public Builder clearMagicNumberPresent() {
+        magicNumberPresentCase_ = 0;
+        magicNumberPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+      private int versionPresentCase_ = 0;
+      private java.lang.Object versionPresent_;
+      public VersionPresentCase
+          getVersionPresentCase() {
+        return VersionPresentCase.forNumber(
+            versionPresentCase_);
+      }
+
+      public Builder clearVersionPresent() {
+        versionPresentCase_ = 0;
+        versionPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+      private int compressionPresentCase_ = 0;
+      private java.lang.Object compressionPresent_;
+      public CompressionPresentCase
+          getCompressionPresentCase() {
+        return CompressionPresentCase.forNumber(
+            compressionPresentCase_);
+      }
+
+      public Builder clearCompressionPresent() {
+        compressionPresentCase_ = 0;
+        compressionPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+
+      /**
+       * <code>int32 magic_number = 1;</code>
+       */
+      public int getMagicNumber() {
+        if (magicNumberPresentCase_ == 1) {
+          return (java.lang.Integer) magicNumberPresent_;
+        }
+        return 17;
+      }
+      /**
+       * <code>int32 magic_number = 1;</code>
+       */
+      public Builder setMagicNumber(int value) {
+        magicNumberPresentCase_ = 1;
+        magicNumberPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int32 magic_number = 1;</code>
+       */
+      public Builder clearMagicNumber() {
+        if (magicNumberPresentCase_ == 1) {
+          magicNumberPresentCase_ = 0;
+          magicNumberPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+
+      /**
+       * <code>int32 version = 2;</code>
+       */
+      public int getVersion() {
+        if (versionPresentCase_ == 2) {
+          return (java.lang.Integer) versionPresent_;
+        }
+        return 0;
+      }
+      /**
+       * <code>int32 version = 2;</code>
+       */
+      public Builder setVersion(int value) {
+        versionPresentCase_ = 2;
+        versionPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int32 version = 2;</code>
+       */
+      public Builder clearVersion() {
+        if (versionPresentCase_ == 2) {
+          versionPresentCase_ = 0;
+          versionPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+
+      private int type_ = 0;
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+       */
+      public int getTypeValue() {
+        return type_;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+       */
+      public Builder setTypeValue(int value) {
+        type_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+       */
+      public com.alibaba.otter.canal.protocol.CanalPacket.PacketType getType() {
+        @SuppressWarnings("deprecation")
+        com.alibaba.otter.canal.protocol.CanalPacket.PacketType result = com.alibaba.otter.canal.protocol.CanalPacket.PacketType.valueOf(type_);
+        return result == null ? com.alibaba.otter.canal.protocol.CanalPacket.PacketType.UNRECOGNIZED : result;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+       */
+      public Builder setType(com.alibaba.otter.canal.protocol.CanalPacket.PacketType value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        
+        type_ = value.getNumber();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.PacketType type = 3;</code>
+       */
+      public Builder clearType() {
+        
+        type_ = 0;
+        onChanged();
+        return this;
+      }
+
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+       */
+      public int getCompressionValue() {
+        if (compressionPresentCase_ == 4) {
+          return ((java.lang.Integer) compressionPresent_).intValue();
+        }
+        return 0;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+       */
+      public Builder setCompressionValue(int value) {
+        compressionPresentCase_ = 4;
+        compressionPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+       */
+      public com.alibaba.otter.canal.protocol.CanalPacket.Compression getCompression() {
+        if (compressionPresentCase_ == 4) {
+          @SuppressWarnings("deprecation")
+          com.alibaba.otter.canal.protocol.CanalPacket.Compression result = com.alibaba.otter.canal.protocol.CanalPacket.Compression.valueOf(
+              (java.lang.Integer) compressionPresent_);
+          return result == null ? com.alibaba.otter.canal.protocol.CanalPacket.Compression.UNRECOGNIZED : result;
+        }
+        return com.alibaba.otter.canal.protocol.CanalPacket.Compression.COMPRESSIONCOMPATIBLEPROTO2;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+       */
+      public Builder setCompression(com.alibaba.otter.canal.protocol.CanalPacket.Compression value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        compressionPresentCase_ = 4;
+        compressionPresent_ = value.getNumber();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression compression = 4;</code>
+       */
+      public Builder clearCompression() {
+        if (compressionPresentCase_ == 4) {
+          compressionPresentCase_ = 0;
+          compressionPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+
+      private com.google.protobuf.ByteString body_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <code>bytes body = 5;</code>
+       */
+      public com.google.protobuf.ByteString getBody() {
+        return body_;
+      }
+      /**
+       * <code>bytes body = 5;</code>
+       */
+      public Builder setBody(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        body_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>bytes body = 5;</code>
+       */
+      public Builder clearBody() {
+        
+        body_ = getDefaultInstance().getBody();
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Packet)
     }
 
-    public interface HeartBeatOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.HeartBeat)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional int64 send_timestamp = 1;</code>
-         */
-        boolean hasSendTimestamp();
-
-        /**
-         * <code>optional int64 send_timestamp = 1;</code>
-         */
-        long getSendTimestamp();
-
-        /**
-         * <code>optional int64 start_timestamp = 2;</code>
-         */
-        boolean hasStartTimestamp();
-
-        /**
-         * <code>optional int64 start_timestamp = 2;</code>
-         */
-        long getStartTimestamp();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Packet)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.Packet DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.Packet();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Packet getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Packet>
+        PARSER = new com.google.protobuf.AbstractParser<Packet>() {
+      @java.lang.Override
+      public Packet parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Packet(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Packet> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Packet> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.Packet getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface HeartBeatOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.HeartBeat)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>int64 send_timestamp = 1;</code>
+     */
+    long getSendTimestamp();
+
+    /**
+     * <code>int64 start_timestamp = 2;</code>
+     */
+    long getStartTimestamp();
+  }
+  /**
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.HeartBeat}
+   */
+  public  static final class HeartBeat extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.HeartBeat)
+      HeartBeatOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use HeartBeat.newBuilder() to construct.
+    private HeartBeat(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private HeartBeat() {
+      sendTimestamp_ = 0L;
+      startTimestamp_ = 0L;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private HeartBeat(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 8: {
+
+              sendTimestamp_ = input.readInt64();
+              break;
+            }
+            case 16: {
+
+              startTimestamp_ = input.readInt64();
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.class, com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.Builder.class);
+    }
+
+    public static final int SEND_TIMESTAMP_FIELD_NUMBER = 1;
+    private long sendTimestamp_;
+    /**
+     * <code>int64 send_timestamp = 1;</code>
+     */
+    public long getSendTimestamp() {
+      return sendTimestamp_;
+    }
+
+    public static final int START_TIMESTAMP_FIELD_NUMBER = 2;
+    private long startTimestamp_;
+    /**
+     * <code>int64 start_timestamp = 2;</code>
+     */
+    public long getStartTimestamp() {
+      return startTimestamp_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (sendTimestamp_ != 0L) {
+        output.writeInt64(1, sendTimestamp_);
+      }
+      if (startTimestamp_ != 0L) {
+        output.writeInt64(2, startTimestamp_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (sendTimestamp_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(1, sendTimestamp_);
+      }
+      if (startTimestamp_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(2, startTimestamp_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat other = (com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat) obj;
+
+      boolean result = true;
+      result = result && (getSendTimestamp()
+          == other.getSendTimestamp());
+      result = result && (getStartTimestamp()
+          == other.getStartTimestamp());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + SEND_TIMESTAMP_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getSendTimestamp());
+      hash = (37 * hash) + START_TIMESTAMP_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getStartTimestamp());
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
      * Protobuf type {@code com.alibaba.otter.canal.protocol.HeartBeat}
      */
-    public static final class HeartBeat extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.HeartBeat)
-    HeartBeatOrBuilder {
-
-        // Use HeartBeat.newBuilder() to construct.
-        private HeartBeat(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private HeartBeat(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final HeartBeat defaultInstance;
-
-        public static HeartBeat getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public HeartBeat getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private HeartBeat(com.google.protobuf.CodedInputStream input,
-                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                      throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 8: {
-                            bitField0_ |= 0x00000001;
-                            sendTimestamp_ = input.readInt64();
-                            break;
-                        }
-                        case 16: {
-                            bitField0_ |= 0x00000002;
-                            startTimestamp_ = input.readInt64();
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<HeartBeat> PARSER = new com.google.protobuf.AbstractParser<HeartBeat>() {
-
-                                                                       public HeartBeat parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                                         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                                     throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                           return new HeartBeat(input,
-                                                                               extensionRegistry);
-                                                                       }
-                                                                   };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<HeartBeat> getParserForType() {
-            return PARSER;
-        }
-
-        private int             bitField0_;
-        public static final int SEND_TIMESTAMP_FIELD_NUMBER = 1;
-        private long            sendTimestamp_;
-
-        /**
-         * <code>optional int64 send_timestamp = 1;</code>
-         */
-        public boolean hasSendTimestamp() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional int64 send_timestamp = 1;</code>
-         */
-        public long getSendTimestamp() {
-            return sendTimestamp_;
-        }
-
-        public static final int START_TIMESTAMP_FIELD_NUMBER = 2;
-        private long            startTimestamp_;
-
-        /**
-         * <code>optional int64 start_timestamp = 2;</code>
-         */
-        public boolean hasStartTimestamp() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional int64 start_timestamp = 2;</code>
-         */
-        public long getStartTimestamp() {
-            return startTimestamp_;
-        }
-
-        private void initFields() {
-            sendTimestamp_ = 0L;
-            startTimestamp_ = 0L;
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeInt64(1, sendTimestamp_);
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeInt64(2, startTimestamp_);
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(1, sendTimestamp_);
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(2, startTimestamp_);
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                           throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(com.google.protobuf.ByteString data,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(byte[] data)
-                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(byte[] data,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(java.io.InputStream input)
-                                                                                                                 throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(java.io.InputStream input,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                          throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseDelimitedFrom(java.io.InputStream input,
-                                                                                                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                            throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                                  throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.HeartBeat}
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.HeartBeat)
         com.alibaba.otter.canal.protocol.CanalPacket.HeartBeatOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.class, com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                sendTimestamp_ = 0L;
-                bitField0_ = (bitField0_ & ~0x00000001);
-                startTimestamp_ = 0L;
-                bitField0_ = (bitField0_ & ~0x00000002);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat result = new com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.sendTimestamp_ = sendTimestamp_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.startTimestamp_ = startTimestamp_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.getDefaultInstance()) return this;
-                if (other.hasSendTimestamp()) {
-                    setSendTimestamp(other.getSendTimestamp());
-                }
-                if (other.hasStartTimestamp()) {
-                    setStartTimestamp(other.getStartTimestamp());
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int  bitField0_;
-
-            private long sendTimestamp_;
-
-            /**
-             * <code>optional int64 send_timestamp = 1;</code>
-             */
-            public boolean hasSendTimestamp() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional int64 send_timestamp = 1;</code>
-             */
-            public long getSendTimestamp() {
-                return sendTimestamp_;
-            }
-
-            /**
-             * <code>optional int64 send_timestamp = 1;</code>
-             */
-            public Builder setSendTimestamp(long value) {
-                bitField0_ |= 0x00000001;
-                sendTimestamp_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 send_timestamp = 1;</code>
-             */
-            public Builder clearSendTimestamp() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                sendTimestamp_ = 0L;
-                onChanged();
-                return this;
-            }
-
-            private long startTimestamp_;
-
-            /**
-             * <code>optional int64 start_timestamp = 2;</code>
-             */
-            public boolean hasStartTimestamp() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional int64 start_timestamp = 2;</code>
-             */
-            public long getStartTimestamp() {
-                return startTimestamp_;
-            }
-
-            /**
-             * <code>optional int64 start_timestamp = 2;</code>
-             */
-            public Builder setStartTimestamp(long value) {
-                bitField0_ |= 0x00000002;
-                startTimestamp_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 start_timestamp = 2;</code>
-             */
-            public Builder clearStartTimestamp() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                startTimestamp_ = 0L;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.HeartBeat)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        sendTimestamp_ = 0L;
 
-        static {
-            defaultInstance = new HeartBeat(true);
-            defaultInstance.initFields();
+        startTimestamp_ = 0L;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.HeartBeat)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat result = new com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat(this);
+        result.sendTimestamp_ = sendTimestamp_;
+        result.startTimestamp_ = startTimestamp_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat.getDefaultInstance()) return this;
+        if (other.getSendTimestamp() != 0L) {
+          setSendTimestamp(other.getSendTimestamp());
+        }
+        if (other.getStartTimestamp() != 0L) {
+          setStartTimestamp(other.getStartTimestamp());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private long sendTimestamp_ ;
+      /**
+       * <code>int64 send_timestamp = 1;</code>
+       */
+      public long getSendTimestamp() {
+        return sendTimestamp_;
+      }
+      /**
+       * <code>int64 send_timestamp = 1;</code>
+       */
+      public Builder setSendTimestamp(long value) {
+        
+        sendTimestamp_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 send_timestamp = 1;</code>
+       */
+      public Builder clearSendTimestamp() {
+        
+        sendTimestamp_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      private long startTimestamp_ ;
+      /**
+       * <code>int64 start_timestamp = 2;</code>
+       */
+      public long getStartTimestamp() {
+        return startTimestamp_;
+      }
+      /**
+       * <code>int64 start_timestamp = 2;</code>
+       */
+      public Builder setStartTimestamp(long value) {
+        
+        startTimestamp_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 start_timestamp = 2;</code>
+       */
+      public Builder clearStartTimestamp() {
+        
+        startTimestamp_ = 0L;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.HeartBeat)
     }
 
-    public interface HandshakeOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Handshake)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-         */
-        boolean hasCommunicationEncoding();
-
-        /**
-         * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-         */
-        java.lang.String getCommunicationEncoding();
-
-        /**
-         * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-         */
-        com.google.protobuf.ByteString getCommunicationEncodingBytes();
-
-        /**
-         * <code>optional bytes seeds = 2;</code>
-         */
-        boolean hasSeeds();
-
-        /**
-         * <code>optional bytes seeds = 2;</code>
-         */
-        com.google.protobuf.ByteString getSeeds();
-
-        /**
-         * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-         */
-        java.util.List<com.alibaba.otter.canal.protocol.CanalPacket.Compression> getSupportedCompressionsList();
-
-        /**
-         * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-         */
-        int getSupportedCompressionsCount();
-
-        /**
-         * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-         */
-        com.alibaba.otter.canal.protocol.CanalPacket.Compression getSupportedCompressions(int index);
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.HeartBeat)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<HeartBeat>
+        PARSER = new com.google.protobuf.AbstractParser<HeartBeat>() {
+      @java.lang.Override
+      public HeartBeat parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new HeartBeat(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<HeartBeat> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<HeartBeat> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.HeartBeat getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface HandshakeOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Handshake)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string communication_encoding = 1;</code>
+     */
+    java.lang.String getCommunicationEncoding();
+    /**
+     * <code>string communication_encoding = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getCommunicationEncodingBytes();
+
+    /**
+     * <code>bytes seeds = 2;</code>
+     */
+    com.google.protobuf.ByteString getSeeds();
+
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+     */
+    int getSupportedCompressionsValue();
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+     */
+    com.alibaba.otter.canal.protocol.CanalPacket.Compression getSupportedCompressions();
+
+    public com.alibaba.otter.canal.protocol.CanalPacket.Handshake.CommunicationEncodingPresentCase getCommunicationEncodingPresentCase();
+  }
+  /**
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Handshake}
+   */
+  public  static final class Handshake extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Handshake)
+      HandshakeOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use Handshake.newBuilder() to construct.
+    private Handshake(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private Handshake() {
+      seeds_ = com.google.protobuf.ByteString.EMPTY;
+      supportedCompressions_ = 0;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Handshake(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+              communicationEncodingPresentCase_ = 1;
+              communicationEncodingPresent_ = s;
+              break;
+            }
+            case 18: {
+
+              seeds_ = input.readBytes();
+              break;
+            }
+            case 24: {
+              int rawValue = input.readEnum();
+
+              supportedCompressions_ = rawValue;
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.Handshake.class, com.alibaba.otter.canal.protocol.CanalPacket.Handshake.Builder.class);
+    }
+
+    private int communicationEncodingPresentCase_ = 0;
+    private java.lang.Object communicationEncodingPresent_;
+    public enum CommunicationEncodingPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      COMMUNICATION_ENCODING(1),
+      COMMUNICATIONENCODINGPRESENT_NOT_SET(0);
+      private final int value;
+      private CommunicationEncodingPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static CommunicationEncodingPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static CommunicationEncodingPresentCase forNumber(int value) {
+        switch (value) {
+          case 1: return COMMUNICATION_ENCODING;
+          case 0: return COMMUNICATIONENCODINGPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public CommunicationEncodingPresentCase
+    getCommunicationEncodingPresentCase() {
+      return CommunicationEncodingPresentCase.forNumber(
+          communicationEncodingPresentCase_);
+    }
+
+    public static final int COMMUNICATION_ENCODING_FIELD_NUMBER = 1;
+    /**
+     * <code>string communication_encoding = 1;</code>
+     */
+    public java.lang.String getCommunicationEncoding() {
+      java.lang.Object ref = "";
+      if (communicationEncodingPresentCase_ == 1) {
+        ref = communicationEncodingPresent_;
+      }
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (communicationEncodingPresentCase_ == 1) {
+          communicationEncodingPresent_ = s;
+        }
+        return s;
+      }
+    }
+    /**
+     * <code>string communication_encoding = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getCommunicationEncodingBytes() {
+      java.lang.Object ref = "";
+      if (communicationEncodingPresentCase_ == 1) {
+        ref = communicationEncodingPresent_;
+      }
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        if (communicationEncodingPresentCase_ == 1) {
+          communicationEncodingPresent_ = b;
+        }
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int SEEDS_FIELD_NUMBER = 2;
+    private com.google.protobuf.ByteString seeds_;
+    /**
+     * <code>bytes seeds = 2;</code>
+     */
+    public com.google.protobuf.ByteString getSeeds() {
+      return seeds_;
+    }
+
+    public static final int SUPPORTED_COMPRESSIONS_FIELD_NUMBER = 3;
+    private int supportedCompressions_;
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+     */
+    public int getSupportedCompressionsValue() {
+      return supportedCompressions_;
+    }
+    /**
+     * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+     */
+    public com.alibaba.otter.canal.protocol.CanalPacket.Compression getSupportedCompressions() {
+      @SuppressWarnings("deprecation")
+      com.alibaba.otter.canal.protocol.CanalPacket.Compression result = com.alibaba.otter.canal.protocol.CanalPacket.Compression.valueOf(supportedCompressions_);
+      return result == null ? com.alibaba.otter.canal.protocol.CanalPacket.Compression.UNRECOGNIZED : result;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (communicationEncodingPresentCase_ == 1) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, communicationEncodingPresent_);
+      }
+      if (!seeds_.isEmpty()) {
+        output.writeBytes(2, seeds_);
+      }
+      if (supportedCompressions_ != com.alibaba.otter.canal.protocol.CanalPacket.Compression.COMPRESSIONCOMPATIBLEPROTO2.getNumber()) {
+        output.writeEnum(3, supportedCompressions_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (communicationEncodingPresentCase_ == 1) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, communicationEncodingPresent_);
+      }
+      if (!seeds_.isEmpty()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(2, seeds_);
+      }
+      if (supportedCompressions_ != com.alibaba.otter.canal.protocol.CanalPacket.Compression.COMPRESSIONCOMPATIBLEPROTO2.getNumber()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(3, supportedCompressions_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.Handshake)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.Handshake other = (com.alibaba.otter.canal.protocol.CanalPacket.Handshake) obj;
+
+      boolean result = true;
+      result = result && getSeeds()
+          .equals(other.getSeeds());
+      result = result && supportedCompressions_ == other.supportedCompressions_;
+      result = result && getCommunicationEncodingPresentCase().equals(
+          other.getCommunicationEncodingPresentCase());
+      if (!result) return false;
+      switch (communicationEncodingPresentCase_) {
+        case 1:
+          result = result && getCommunicationEncoding()
+              .equals(other.getCommunicationEncoding());
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + SEEDS_FIELD_NUMBER;
+      hash = (53 * hash) + getSeeds().hashCode();
+      hash = (37 * hash) + SUPPORTED_COMPRESSIONS_FIELD_NUMBER;
+      hash = (53 * hash) + supportedCompressions_;
+      switch (communicationEncodingPresentCase_) {
+        case 1:
+          hash = (37 * hash) + COMMUNICATION_ENCODING_FIELD_NUMBER;
+          hash = (53 * hash) + getCommunicationEncoding().hashCode();
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Handshake prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
      * Protobuf type {@code com.alibaba.otter.canal.protocol.Handshake}
      */
-    public static final class Handshake extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Handshake)
-    HandshakeOrBuilder {
-
-        // Use Handshake.newBuilder() to construct.
-        private Handshake(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private Handshake(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final Handshake defaultInstance;
-
-        public static Handshake getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public Handshake getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private Handshake(com.google.protobuf.CodedInputStream input,
-                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                      throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 10: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000001;
-                            communicationEncoding_ = bs;
-                            break;
-                        }
-                        case 18: {
-                            bitField0_ |= 0x00000002;
-                            seeds_ = input.readBytes();
-                            break;
-                        }
-                        case 24: {
-                            int rawValue = input.readEnum();
-                            com.alibaba.otter.canal.protocol.CanalPacket.Compression value = com.alibaba.otter.canal.protocol.CanalPacket.Compression.valueOf(rawValue);
-                            if (value == null) {
-                                unknownFields.mergeVarintField(3, rawValue);
-                            } else {
-                                if (!((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
-                                    supportedCompressions_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalPacket.Compression>();
-                                    mutable_bitField0_ |= 0x00000004;
-                                }
-                                supportedCompressions_.add(value);
-                            }
-                            break;
-                        }
-                        case 26: {
-                            int length = input.readRawVarint32();
-                            int oldLimit = input.pushLimit(length);
-                            while (input.getBytesUntilLimit() > 0) {
-                                int rawValue = input.readEnum();
-                                com.alibaba.otter.canal.protocol.CanalPacket.Compression value = com.alibaba.otter.canal.protocol.CanalPacket.Compression.valueOf(rawValue);
-                                if (value == null) {
-                                    unknownFields.mergeVarintField(3, rawValue);
-                                } else {
-                                    if (!((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
-                                        supportedCompressions_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalPacket.Compression>();
-                                        mutable_bitField0_ |= 0x00000004;
-                                    }
-                                    supportedCompressions_.add(value);
-                                }
-                            }
-                            input.popLimit(oldLimit);
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                if (((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
-                    supportedCompressions_ = java.util.Collections.unmodifiableList(supportedCompressions_);
-                }
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Handshake.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.Handshake.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<Handshake> PARSER = new com.google.protobuf.AbstractParser<Handshake>() {
-
-                                                                       public Handshake parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                                         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                                     throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                           return new Handshake(input,
-                                                                               extensionRegistry);
-                                                                       }
-                                                                   };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<Handshake> getParserForType() {
-            return PARSER;
-        }
-
-        private int              bitField0_;
-        public static final int  COMMUNICATION_ENCODING_FIELD_NUMBER = 1;
-        private java.lang.Object communicationEncoding_;
-
-        /**
-         * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-         */
-        public boolean hasCommunicationEncoding() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-         */
-        public java.lang.String getCommunicationEncoding() {
-            java.lang.Object ref = communicationEncoding_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    communicationEncoding_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-         */
-        public com.google.protobuf.ByteString getCommunicationEncodingBytes() {
-            java.lang.Object ref = communicationEncoding_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                communicationEncoding_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int                SEEDS_FIELD_NUMBER = 2;
-        private com.google.protobuf.ByteString seeds_;
-
-        /**
-         * <code>optional bytes seeds = 2;</code>
-         */
-        public boolean hasSeeds() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional bytes seeds = 2;</code>
-         */
-        public com.google.protobuf.ByteString getSeeds() {
-            return seeds_;
-        }
-
-        public static final int                                                          SUPPORTED_COMPRESSIONS_FIELD_NUMBER = 3;
-        private java.util.List<com.alibaba.otter.canal.protocol.CanalPacket.Compression> supportedCompressions_;
-
-        /**
-         * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-         */
-        public java.util.List<com.alibaba.otter.canal.protocol.CanalPacket.Compression> getSupportedCompressionsList() {
-            return supportedCompressions_;
-        }
-
-        /**
-         * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-         */
-        public int getSupportedCompressionsCount() {
-            return supportedCompressions_.size();
-        }
-
-        /**
-         * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-         */
-        public com.alibaba.otter.canal.protocol.CanalPacket.Compression getSupportedCompressions(int index) {
-            return supportedCompressions_.get(index);
-        }
-
-        private void initFields() {
-            communicationEncoding_ = "utf8";
-            seeds_ = com.google.protobuf.ByteString.EMPTY;
-            supportedCompressions_ = java.util.Collections.emptyList();
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeBytes(1, getCommunicationEncodingBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeBytes(2, seeds_);
-            }
-            for (int i = 0; i < supportedCompressions_.size(); i++) {
-                output.writeEnum(3, supportedCompressions_.get(i).getNumber());
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(1, getCommunicationEncodingBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(2, seeds_);
-            }
-            {
-                int dataSize = 0;
-                for (int i = 0; i < supportedCompressions_.size(); i++) {
-                    dataSize += com.google.protobuf.CodedOutputStream.computeEnumSizeNoTag(supportedCompressions_.get(i)
-                        .getNumber());
-                }
-                size += dataSize;
-                size += 1 * supportedCompressions_.size();
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                           throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(com.google.protobuf.ByteString data,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(byte[] data)
-                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(byte[] data,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(java.io.InputStream input)
-                                                                                                                 throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(java.io.InputStream input,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                          throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseDelimitedFrom(java.io.InputStream input,
-                                                                                                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                            throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                                  throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Handshake prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.Handshake}
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Handshake)
         com.alibaba.otter.canal.protocol.CanalPacket.HandshakeOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.Handshake.class, com.alibaba.otter.canal.protocol.CanalPacket.Handshake.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Handshake.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.Handshake.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.Handshake.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.Handshake.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                communicationEncoding_ = "utf8";
-                bitField0_ = (bitField0_ & ~0x00000001);
-                seeds_ = com.google.protobuf.ByteString.EMPTY;
-                bitField0_ = (bitField0_ & ~0x00000002);
-                supportedCompressions_ = java.util.Collections.emptyList();
-                bitField0_ = (bitField0_ & ~0x00000004);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Handshake getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.Handshake.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Handshake build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Handshake result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Handshake buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Handshake result = new com.alibaba.otter.canal.protocol.CanalPacket.Handshake(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.communicationEncoding_ = communicationEncoding_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.seeds_ = seeds_;
-                if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                    supportedCompressions_ = java.util.Collections.unmodifiableList(supportedCompressions_);
-                    bitField0_ = (bitField0_ & ~0x00000004);
-                }
-                result.supportedCompressions_ = supportedCompressions_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Handshake) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Handshake) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Handshake other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.Handshake.getDefaultInstance()) return this;
-                if (other.hasCommunicationEncoding()) {
-                    bitField0_ |= 0x00000001;
-                    communicationEncoding_ = other.communicationEncoding_;
-                    onChanged();
-                }
-                if (other.hasSeeds()) {
-                    setSeeds(other.getSeeds());
-                }
-                if (!other.supportedCompressions_.isEmpty()) {
-                    if (supportedCompressions_.isEmpty()) {
-                        supportedCompressions_ = other.supportedCompressions_;
-                        bitField0_ = (bitField0_ & ~0x00000004);
-                    } else {
-                        ensureSupportedCompressionsIsMutable();
-                        supportedCompressions_.addAll(other.supportedCompressions_);
-                    }
-                    onChanged();
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.Handshake parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Handshake) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int              bitField0_;
-
-            private java.lang.Object communicationEncoding_ = "utf8";
-
-            /**
-             * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-             */
-            public boolean hasCommunicationEncoding() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-             */
-            public java.lang.String getCommunicationEncoding() {
-                java.lang.Object ref = communicationEncoding_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        communicationEncoding_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-             */
-            public com.google.protobuf.ByteString getCommunicationEncodingBytes() {
-                java.lang.Object ref = communicationEncoding_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    communicationEncoding_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-             */
-            public Builder setCommunicationEncoding(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                communicationEncoding_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-             */
-            public Builder clearCommunicationEncoding() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                communicationEncoding_ = getDefaultInstance().getCommunicationEncoding();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string communication_encoding = 1 [default = "utf8"];</code>
-             */
-            public Builder setCommunicationEncodingBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                communicationEncoding_ = value;
-                onChanged();
-                return this;
-            }
-
-            private com.google.protobuf.ByteString seeds_ = com.google.protobuf.ByteString.EMPTY;
-
-            /**
-             * <code>optional bytes seeds = 2;</code>
-             */
-            public boolean hasSeeds() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional bytes seeds = 2;</code>
-             */
-            public com.google.protobuf.ByteString getSeeds() {
-                return seeds_;
-            }
-
-            /**
-             * <code>optional bytes seeds = 2;</code>
-             */
-            public Builder setSeeds(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                seeds_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional bytes seeds = 2;</code>
-             */
-            public Builder clearSeeds() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                seeds_ = getDefaultInstance().getSeeds();
-                onChanged();
-                return this;
-            }
-
-            private java.util.List<com.alibaba.otter.canal.protocol.CanalPacket.Compression> supportedCompressions_ = java.util.Collections.emptyList();
-
-            private void ensureSupportedCompressionsIsMutable() {
-                if (!((bitField0_ & 0x00000004) == 0x00000004)) {
-                    supportedCompressions_ = new java.util.ArrayList<com.alibaba.otter.canal.protocol.CanalPacket.Compression>(supportedCompressions_);
-                    bitField0_ |= 0x00000004;
-                }
-            }
-
-            /**
-             * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-             */
-            public java.util.List<com.alibaba.otter.canal.protocol.CanalPacket.Compression> getSupportedCompressionsList() {
-                return java.util.Collections.unmodifiableList(supportedCompressions_);
-            }
-
-            /**
-             * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-             */
-            public int getSupportedCompressionsCount() {
-                return supportedCompressions_.size();
-            }
-
-            /**
-             * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-             */
-            public com.alibaba.otter.canal.protocol.CanalPacket.Compression getSupportedCompressions(int index) {
-                return supportedCompressions_.get(index);
-            }
-
-            /**
-             * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-             */
-            public Builder setSupportedCompressions(int index,
-                                                    com.alibaba.otter.canal.protocol.CanalPacket.Compression value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                ensureSupportedCompressionsIsMutable();
-                supportedCompressions_.set(index, value);
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-             */
-            public Builder addSupportedCompressions(com.alibaba.otter.canal.protocol.CanalPacket.Compression value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                ensureSupportedCompressionsIsMutable();
-                supportedCompressions_.add(value);
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-             */
-            public Builder addAllSupportedCompressions(java.lang.Iterable<? extends com.alibaba.otter.canal.protocol.CanalPacket.Compression> values) {
-                ensureSupportedCompressionsIsMutable();
-                com.google.protobuf.AbstractMessageLite.Builder.addAll(values, supportedCompressions_);
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>repeated .com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
-             */
-            public Builder clearSupportedCompressions() {
-                supportedCompressions_ = java.util.Collections.emptyList();
-                bitField0_ = (bitField0_ & ~0x00000004);
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Handshake)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        seeds_ = com.google.protobuf.ByteString.EMPTY;
 
-        static {
-            defaultInstance = new Handshake(true);
-            defaultInstance.initFields();
+        supportedCompressions_ = 0;
+
+        communicationEncodingPresentCase_ = 0;
+        communicationEncodingPresent_ = null;
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Handshake getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.Handshake.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Handshake build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Handshake result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Handshake)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Handshake buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Handshake result = new com.alibaba.otter.canal.protocol.CanalPacket.Handshake(this);
+        if (communicationEncodingPresentCase_ == 1) {
+          result.communicationEncodingPresent_ = communicationEncodingPresent_;
+        }
+        result.seeds_ = seeds_;
+        result.supportedCompressions_ = supportedCompressions_;
+        result.communicationEncodingPresentCase_ = communicationEncodingPresentCase_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Handshake) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Handshake)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Handshake other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.Handshake.getDefaultInstance()) return this;
+        if (other.getSeeds() != com.google.protobuf.ByteString.EMPTY) {
+          setSeeds(other.getSeeds());
+        }
+        if (other.supportedCompressions_ != 0) {
+          setSupportedCompressionsValue(other.getSupportedCompressionsValue());
+        }
+        switch (other.getCommunicationEncodingPresentCase()) {
+          case COMMUNICATION_ENCODING: {
+            communicationEncodingPresentCase_ = 1;
+            communicationEncodingPresent_ = other.communicationEncodingPresent_;
+            onChanged();
+            break;
+          }
+          case COMMUNICATIONENCODINGPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.Handshake parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Handshake) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int communicationEncodingPresentCase_ = 0;
+      private java.lang.Object communicationEncodingPresent_;
+      public CommunicationEncodingPresentCase
+          getCommunicationEncodingPresentCase() {
+        return CommunicationEncodingPresentCase.forNumber(
+            communicationEncodingPresentCase_);
+      }
+
+      public Builder clearCommunicationEncodingPresent() {
+        communicationEncodingPresentCase_ = 0;
+        communicationEncodingPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+
+      /**
+       * <code>string communication_encoding = 1;</code>
+       */
+      public java.lang.String getCommunicationEncoding() {
+        java.lang.Object ref = "";
+        if (communicationEncodingPresentCase_ == 1) {
+          ref = communicationEncodingPresent_;
+        }
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          if (communicationEncodingPresentCase_ == 1) {
+            communicationEncodingPresent_ = s;
+          }
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string communication_encoding = 1;</code>
+       */
+      public com.google.protobuf.ByteString
+          getCommunicationEncodingBytes() {
+        java.lang.Object ref = "";
+        if (communicationEncodingPresentCase_ == 1) {
+          ref = communicationEncodingPresent_;
+        }
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          if (communicationEncodingPresentCase_ == 1) {
+            communicationEncodingPresent_ = b;
+          }
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string communication_encoding = 1;</code>
+       */
+      public Builder setCommunicationEncoding(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  communicationEncodingPresentCase_ = 1;
+        communicationEncodingPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string communication_encoding = 1;</code>
+       */
+      public Builder clearCommunicationEncoding() {
+        if (communicationEncodingPresentCase_ == 1) {
+          communicationEncodingPresentCase_ = 0;
+          communicationEncodingPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+      /**
+       * <code>string communication_encoding = 1;</code>
+       */
+      public Builder setCommunicationEncodingBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        communicationEncodingPresentCase_ = 1;
+        communicationEncodingPresent_ = value;
+        onChanged();
+        return this;
+      }
+
+      private com.google.protobuf.ByteString seeds_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <code>bytes seeds = 2;</code>
+       */
+      public com.google.protobuf.ByteString getSeeds() {
+        return seeds_;
+      }
+      /**
+       * <code>bytes seeds = 2;</code>
+       */
+      public Builder setSeeds(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        seeds_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>bytes seeds = 2;</code>
+       */
+      public Builder clearSeeds() {
+        
+        seeds_ = getDefaultInstance().getSeeds();
+        onChanged();
+        return this;
+      }
+
+      private int supportedCompressions_ = 0;
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+       */
+      public int getSupportedCompressionsValue() {
+        return supportedCompressions_;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+       */
+      public Builder setSupportedCompressionsValue(int value) {
+        supportedCompressions_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+       */
+      public com.alibaba.otter.canal.protocol.CanalPacket.Compression getSupportedCompressions() {
+        @SuppressWarnings("deprecation")
+        com.alibaba.otter.canal.protocol.CanalPacket.Compression result = com.alibaba.otter.canal.protocol.CanalPacket.Compression.valueOf(supportedCompressions_);
+        return result == null ? com.alibaba.otter.canal.protocol.CanalPacket.Compression.UNRECOGNIZED : result;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+       */
+      public Builder setSupportedCompressions(com.alibaba.otter.canal.protocol.CanalPacket.Compression value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        
+        supportedCompressions_ = value.getNumber();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>.com.alibaba.otter.canal.protocol.Compression supported_compressions = 3;</code>
+       */
+      public Builder clearSupportedCompressions() {
+        
+        supportedCompressions_ = 0;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Handshake)
     }
 
-    public interface ClientAuthOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.ClientAuth)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional string username = 1;</code>
-         */
-        boolean hasUsername();
-
-        /**
-         * <code>optional string username = 1;</code>
-         */
-        java.lang.String getUsername();
-
-        /**
-         * <code>optional string username = 1;</code>
-         */
-        com.google.protobuf.ByteString getUsernameBytes();
-
-        /**
-         * <code>optional bytes password = 2;</code>
-         *
-         * <pre>
-         * hashed password with seeds from Handshake message
-         * </pre>
-         */
-        boolean hasPassword();
-
-        /**
-         * <code>optional bytes password = 2;</code>
-         *
-         * <pre>
-         * hashed password with seeds from Handshake message
-         * </pre>
-         */
-        com.google.protobuf.ByteString getPassword();
-
-        /**
-         * <code>optional int32 net_read_timeout = 3 [default = 0];</code>
-         *
-         * <pre>
-         * in seconds
-         * </pre>
-         */
-        boolean hasNetReadTimeout();
-
-        /**
-         * <code>optional int32 net_read_timeout = 3 [default = 0];</code>
-         *
-         * <pre>
-         * in seconds
-         * </pre>
-         */
-        int getNetReadTimeout();
-
-        /**
-         * <code>optional int32 net_write_timeout = 4 [default = 0];</code>
-         *
-         * <pre>
-         * in seconds
-         * </pre>
-         */
-        boolean hasNetWriteTimeout();
-
-        /**
-         * <code>optional int32 net_write_timeout = 4 [default = 0];</code>
-         *
-         * <pre>
-         * in seconds
-         * </pre>
-         */
-        int getNetWriteTimeout();
-
-        /**
-         * <code>optional string destination = 5;</code>
-         */
-        boolean hasDestination();
-
-        /**
-         * <code>optional string destination = 5;</code>
-         */
-        java.lang.String getDestination();
-
-        /**
-         * <code>optional string destination = 5;</code>
-         */
-        com.google.protobuf.ByteString getDestinationBytes();
-
-        /**
-         * <code>optional string client_id = 6;</code>
-         */
-        boolean hasClientId();
-
-        /**
-         * <code>optional string client_id = 6;</code>
-         */
-        java.lang.String getClientId();
-
-        /**
-         * <code>optional string client_id = 6;</code>
-         */
-        com.google.protobuf.ByteString getClientIdBytes();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        boolean hasFilter();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        java.lang.String getFilter();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        com.google.protobuf.ByteString getFilterBytes();
-
-        /**
-         * <code>optional int64 start_timestamp = 8;</code>
-         */
-        boolean hasStartTimestamp();
-
-        /**
-         * <code>optional int64 start_timestamp = 8;</code>
-         */
-        long getStartTimestamp();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Handshake)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.Handshake DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.Handshake();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Handshake getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Handshake>
+        PARSER = new com.google.protobuf.AbstractParser<Handshake>() {
+      @java.lang.Override
+      public Handshake parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Handshake(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Handshake> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Handshake> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.Handshake getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface ClientAuthOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.ClientAuth)
+      com.google.protobuf.MessageOrBuilder {
+
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientAuth}
+     * <code>string username = 1;</code>
+     */
+    java.lang.String getUsername();
+    /**
+     * <code>string username = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getUsernameBytes();
+
+    /**
+     * <pre>
+     * hashed password with seeds from Handshake message
+     * </pre>
      *
+     * <code>bytes password = 2;</code>
+     */
+    com.google.protobuf.ByteString getPassword();
+
+    /**
+     * <pre>
+     * in seconds
+     * </pre>
+     *
+     * <code>int32 net_read_timeout = 3;</code>
+     */
+    int getNetReadTimeout();
+
+    /**
+     * <pre>
+     * in seconds
+     * </pre>
+     *
+     * <code>int32 net_write_timeout = 4;</code>
+     */
+    int getNetWriteTimeout();
+
+    /**
+     * <code>string destination = 5;</code>
+     */
+    java.lang.String getDestination();
+    /**
+     * <code>string destination = 5;</code>
+     */
+    com.google.protobuf.ByteString
+        getDestinationBytes();
+
+    /**
+     * <code>string client_id = 6;</code>
+     */
+    java.lang.String getClientId();
+    /**
+     * <code>string client_id = 6;</code>
+     */
+    com.google.protobuf.ByteString
+        getClientIdBytes();
+
+    /**
+     * <code>string filter = 7;</code>
+     */
+    java.lang.String getFilter();
+    /**
+     * <code>string filter = 7;</code>
+     */
+    com.google.protobuf.ByteString
+        getFilterBytes();
+
+    /**
+     * <code>int64 start_timestamp = 8;</code>
+     */
+    long getStartTimestamp();
+
+    public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.NetReadTimeoutPresentCase getNetReadTimeoutPresentCase();
+
+    public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.NetWriteTimeoutPresentCase getNetWriteTimeoutPresentCase();
+  }
+  /**
+   * <pre>
+   * client authentication
+   * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientAuth}
+   */
+  public  static final class ClientAuth extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.ClientAuth)
+      ClientAuthOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use ClientAuth.newBuilder() to construct.
+    private ClientAuth(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private ClientAuth() {
+      username_ = "";
+      password_ = com.google.protobuf.ByteString.EMPTY;
+      destination_ = "";
+      clientId_ = "";
+      filter_ = "";
+      startTimestamp_ = 0L;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private ClientAuth(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              username_ = s;
+              break;
+            }
+            case 18: {
+
+              password_ = input.readBytes();
+              break;
+            }
+            case 24: {
+              netReadTimeoutPresentCase_ = 3;
+              netReadTimeoutPresent_ = input.readInt32();
+              break;
+            }
+            case 32: {
+              netWriteTimeoutPresentCase_ = 4;
+              netWriteTimeoutPresent_ = input.readInt32();
+              break;
+            }
+            case 42: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              destination_ = s;
+              break;
+            }
+            case 50: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              clientId_ = s;
+              break;
+            }
+            case 58: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              filter_ = s;
+              break;
+            }
+            case 64: {
+
+              startTimestamp_ = input.readInt64();
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.class, com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.Builder.class);
+    }
+
+    private int netReadTimeoutPresentCase_ = 0;
+    private java.lang.Object netReadTimeoutPresent_;
+    public enum NetReadTimeoutPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      NET_READ_TIMEOUT(3),
+      NETREADTIMEOUTPRESENT_NOT_SET(0);
+      private final int value;
+      private NetReadTimeoutPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static NetReadTimeoutPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static NetReadTimeoutPresentCase forNumber(int value) {
+        switch (value) {
+          case 3: return NET_READ_TIMEOUT;
+          case 0: return NETREADTIMEOUTPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public NetReadTimeoutPresentCase
+    getNetReadTimeoutPresentCase() {
+      return NetReadTimeoutPresentCase.forNumber(
+          netReadTimeoutPresentCase_);
+    }
+
+    private int netWriteTimeoutPresentCase_ = 0;
+    private java.lang.Object netWriteTimeoutPresent_;
+    public enum NetWriteTimeoutPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      NET_WRITE_TIMEOUT(4),
+      NETWRITETIMEOUTPRESENT_NOT_SET(0);
+      private final int value;
+      private NetWriteTimeoutPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static NetWriteTimeoutPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static NetWriteTimeoutPresentCase forNumber(int value) {
+        switch (value) {
+          case 4: return NET_WRITE_TIMEOUT;
+          case 0: return NETWRITETIMEOUTPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public NetWriteTimeoutPresentCase
+    getNetWriteTimeoutPresentCase() {
+      return NetWriteTimeoutPresentCase.forNumber(
+          netWriteTimeoutPresentCase_);
+    }
+
+    public static final int USERNAME_FIELD_NUMBER = 1;
+    private volatile java.lang.Object username_;
+    /**
+     * <code>string username = 1;</code>
+     */
+    public java.lang.String getUsername() {
+      java.lang.Object ref = username_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        username_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string username = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getUsernameBytes() {
+      java.lang.Object ref = username_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        username_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int PASSWORD_FIELD_NUMBER = 2;
+    private com.google.protobuf.ByteString password_;
+    /**
+     * <pre>
+     * hashed password with seeds from Handshake message
+     * </pre>
+     *
+     * <code>bytes password = 2;</code>
+     */
+    public com.google.protobuf.ByteString getPassword() {
+      return password_;
+    }
+
+    public static final int NET_READ_TIMEOUT_FIELD_NUMBER = 3;
+    /**
+     * <pre>
+     * in seconds
+     * </pre>
+     *
+     * <code>int32 net_read_timeout = 3;</code>
+     */
+    public int getNetReadTimeout() {
+      if (netReadTimeoutPresentCase_ == 3) {
+        return (java.lang.Integer) netReadTimeoutPresent_;
+      }
+      return 0;
+    }
+
+    public static final int NET_WRITE_TIMEOUT_FIELD_NUMBER = 4;
+    /**
+     * <pre>
+     * in seconds
+     * </pre>
+     *
+     * <code>int32 net_write_timeout = 4;</code>
+     */
+    public int getNetWriteTimeout() {
+      if (netWriteTimeoutPresentCase_ == 4) {
+        return (java.lang.Integer) netWriteTimeoutPresent_;
+      }
+      return 0;
+    }
+
+    public static final int DESTINATION_FIELD_NUMBER = 5;
+    private volatile java.lang.Object destination_;
+    /**
+     * <code>string destination = 5;</code>
+     */
+    public java.lang.String getDestination() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        destination_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string destination = 5;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDestinationBytes() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        destination_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int CLIENT_ID_FIELD_NUMBER = 6;
+    private volatile java.lang.Object clientId_;
+    /**
+     * <code>string client_id = 6;</code>
+     */
+    public java.lang.String getClientId() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        clientId_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string client_id = 6;</code>
+     */
+    public com.google.protobuf.ByteString
+        getClientIdBytes() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        clientId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int FILTER_FIELD_NUMBER = 7;
+    private volatile java.lang.Object filter_;
+    /**
+     * <code>string filter = 7;</code>
+     */
+    public java.lang.String getFilter() {
+      java.lang.Object ref = filter_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        filter_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string filter = 7;</code>
+     */
+    public com.google.protobuf.ByteString
+        getFilterBytes() {
+      java.lang.Object ref = filter_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        filter_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int START_TIMESTAMP_FIELD_NUMBER = 8;
+    private long startTimestamp_;
+    /**
+     * <code>int64 start_timestamp = 8;</code>
+     */
+    public long getStartTimestamp() {
+      return startTimestamp_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!getUsernameBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, username_);
+      }
+      if (!password_.isEmpty()) {
+        output.writeBytes(2, password_);
+      }
+      if (netReadTimeoutPresentCase_ == 3) {
+        output.writeInt32(
+            3, (int)((java.lang.Integer) netReadTimeoutPresent_));
+      }
+      if (netWriteTimeoutPresentCase_ == 4) {
+        output.writeInt32(
+            4, (int)((java.lang.Integer) netWriteTimeoutPresent_));
+      }
+      if (!getDestinationBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 5, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 6, clientId_);
+      }
+      if (!getFilterBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 7, filter_);
+      }
+      if (startTimestamp_ != 0L) {
+        output.writeInt64(8, startTimestamp_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!getUsernameBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, username_);
+      }
+      if (!password_.isEmpty()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(2, password_);
+      }
+      if (netReadTimeoutPresentCase_ == 3) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(
+              3, (int)((java.lang.Integer) netReadTimeoutPresent_));
+      }
+      if (netWriteTimeoutPresentCase_ == 4) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(
+              4, (int)((java.lang.Integer) netWriteTimeoutPresent_));
+      }
+      if (!getDestinationBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, clientId_);
+      }
+      if (!getFilterBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, filter_);
+      }
+      if (startTimestamp_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(8, startTimestamp_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth other = (com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth) obj;
+
+      boolean result = true;
+      result = result && getUsername()
+          .equals(other.getUsername());
+      result = result && getPassword()
+          .equals(other.getPassword());
+      result = result && getDestination()
+          .equals(other.getDestination());
+      result = result && getClientId()
+          .equals(other.getClientId());
+      result = result && getFilter()
+          .equals(other.getFilter());
+      result = result && (getStartTimestamp()
+          == other.getStartTimestamp());
+      result = result && getNetReadTimeoutPresentCase().equals(
+          other.getNetReadTimeoutPresentCase());
+      if (!result) return false;
+      switch (netReadTimeoutPresentCase_) {
+        case 3:
+          result = result && (getNetReadTimeout()
+              == other.getNetReadTimeout());
+          break;
+        case 0:
+        default:
+      }
+      result = result && getNetWriteTimeoutPresentCase().equals(
+          other.getNetWriteTimeoutPresentCase());
+      if (!result) return false;
+      switch (netWriteTimeoutPresentCase_) {
+        case 4:
+          result = result && (getNetWriteTimeout()
+              == other.getNetWriteTimeout());
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + USERNAME_FIELD_NUMBER;
+      hash = (53 * hash) + getUsername().hashCode();
+      hash = (37 * hash) + PASSWORD_FIELD_NUMBER;
+      hash = (53 * hash) + getPassword().hashCode();
+      hash = (37 * hash) + DESTINATION_FIELD_NUMBER;
+      hash = (53 * hash) + getDestination().hashCode();
+      hash = (37 * hash) + CLIENT_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getClientId().hashCode();
+      hash = (37 * hash) + FILTER_FIELD_NUMBER;
+      hash = (53 * hash) + getFilter().hashCode();
+      hash = (37 * hash) + START_TIMESTAMP_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getStartTimestamp());
+      switch (netReadTimeoutPresentCase_) {
+        case 3:
+          hash = (37 * hash) + NET_READ_TIMEOUT_FIELD_NUMBER;
+          hash = (53 * hash) + getNetReadTimeout();
+          break;
+        case 0:
+        default:
+      }
+      switch (netWriteTimeoutPresentCase_) {
+        case 4:
+          hash = (37 * hash) + NET_WRITE_TIMEOUT_FIELD_NUMBER;
+          hash = (53 * hash) + getNetWriteTimeout();
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
      * <pre>
      * client authentication
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientAuth}
      */
-    public static final class ClientAuth extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.ClientAuth)
-    ClientAuthOrBuilder {
-
-        // Use ClientAuth.newBuilder() to construct.
-        private ClientAuth(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private ClientAuth(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final ClientAuth defaultInstance;
-
-        public static ClientAuth getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public ClientAuth getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private ClientAuth(com.google.protobuf.CodedInputStream input,
-                           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                       throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 10: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000001;
-                            username_ = bs;
-                            break;
-                        }
-                        case 18: {
-                            bitField0_ |= 0x00000002;
-                            password_ = input.readBytes();
-                            break;
-                        }
-                        case 24: {
-                            bitField0_ |= 0x00000004;
-                            netReadTimeout_ = input.readInt32();
-                            break;
-                        }
-                        case 32: {
-                            bitField0_ |= 0x00000008;
-                            netWriteTimeout_ = input.readInt32();
-                            break;
-                        }
-                        case 42: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000010;
-                            destination_ = bs;
-                            break;
-                        }
-                        case 50: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000020;
-                            clientId_ = bs;
-                            break;
-                        }
-                        case 58: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000040;
-                            filter_ = bs;
-                            break;
-                        }
-                        case 64: {
-                            bitField0_ |= 0x00000080;
-                            startTimestamp_ = input.readInt64();
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<ClientAuth> PARSER = new com.google.protobuf.AbstractParser<ClientAuth>() {
-
-                                                                        public ClientAuth parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                                           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                                       throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                            return new ClientAuth(input,
-                                                                                extensionRegistry);
-                                                                        }
-                                                                    };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<ClientAuth> getParserForType() {
-            return PARSER;
-        }
-
-        private int              bitField0_;
-        public static final int  USERNAME_FIELD_NUMBER = 1;
-        private java.lang.Object username_;
-
-        /**
-         * <code>optional string username = 1;</code>
-         */
-        public boolean hasUsername() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional string username = 1;</code>
-         */
-        public java.lang.String getUsername() {
-            java.lang.Object ref = username_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    username_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string username = 1;</code>
-         */
-        public com.google.protobuf.ByteString getUsernameBytes() {
-            java.lang.Object ref = username_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                username_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int                PASSWORD_FIELD_NUMBER = 2;
-        private com.google.protobuf.ByteString password_;
-
-        /**
-         * <code>optional bytes password = 2;</code>
-         *
-         * <pre>
-         * hashed password with seeds from Handshake message
-         * </pre>
-         */
-        public boolean hasPassword() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional bytes password = 2;</code>
-         *
-         * <pre>
-         * hashed password with seeds from Handshake message
-         * </pre>
-         */
-        public com.google.protobuf.ByteString getPassword() {
-            return password_;
-        }
-
-        public static final int NET_READ_TIMEOUT_FIELD_NUMBER = 3;
-        private int             netReadTimeout_;
-
-        /**
-         * <code>optional int32 net_read_timeout = 3 [default = 0];</code>
-         *
-         * <pre>
-         * in seconds
-         * </pre>
-         */
-        public boolean hasNetReadTimeout() {
-            return ((bitField0_ & 0x00000004) == 0x00000004);
-        }
-
-        /**
-         * <code>optional int32 net_read_timeout = 3 [default = 0];</code>
-         *
-         * <pre>
-         * in seconds
-         * </pre>
-         */
-        public int getNetReadTimeout() {
-            return netReadTimeout_;
-        }
-
-        public static final int NET_WRITE_TIMEOUT_FIELD_NUMBER = 4;
-        private int             netWriteTimeout_;
-
-        /**
-         * <code>optional int32 net_write_timeout = 4 [default = 0];</code>
-         *
-         * <pre>
-         * in seconds
-         * </pre>
-         */
-        public boolean hasNetWriteTimeout() {
-            return ((bitField0_ & 0x00000008) == 0x00000008);
-        }
-
-        /**
-         * <code>optional int32 net_write_timeout = 4 [default = 0];</code>
-         *
-         * <pre>
-         * in seconds
-         * </pre>
-         */
-        public int getNetWriteTimeout() {
-            return netWriteTimeout_;
-        }
-
-        public static final int  DESTINATION_FIELD_NUMBER = 5;
-        private java.lang.Object destination_;
-
-        /**
-         * <code>optional string destination = 5;</code>
-         */
-        public boolean hasDestination() {
-            return ((bitField0_ & 0x00000010) == 0x00000010);
-        }
-
-        /**
-         * <code>optional string destination = 5;</code>
-         */
-        public java.lang.String getDestination() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    destination_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string destination = 5;</code>
-         */
-        public com.google.protobuf.ByteString getDestinationBytes() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                destination_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int  CLIENT_ID_FIELD_NUMBER = 6;
-        private java.lang.Object clientId_;
-
-        /**
-         * <code>optional string client_id = 6;</code>
-         */
-        public boolean hasClientId() {
-            return ((bitField0_ & 0x00000020) == 0x00000020);
-        }
-
-        /**
-         * <code>optional string client_id = 6;</code>
-         */
-        public java.lang.String getClientId() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    clientId_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string client_id = 6;</code>
-         */
-        public com.google.protobuf.ByteString getClientIdBytes() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                clientId_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int  FILTER_FIELD_NUMBER = 7;
-        private java.lang.Object filter_;
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public boolean hasFilter() {
-            return ((bitField0_ & 0x00000040) == 0x00000040);
-        }
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public java.lang.String getFilter() {
-            java.lang.Object ref = filter_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    filter_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public com.google.protobuf.ByteString getFilterBytes() {
-            java.lang.Object ref = filter_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                filter_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int START_TIMESTAMP_FIELD_NUMBER = 8;
-        private long            startTimestamp_;
-
-        /**
-         * <code>optional int64 start_timestamp = 8;</code>
-         */
-        public boolean hasStartTimestamp() {
-            return ((bitField0_ & 0x00000080) == 0x00000080);
-        }
-
-        /**
-         * <code>optional int64 start_timestamp = 8;</code>
-         */
-        public long getStartTimestamp() {
-            return startTimestamp_;
-        }
-
-        private void initFields() {
-            username_ = "";
-            password_ = com.google.protobuf.ByteString.EMPTY;
-            netReadTimeout_ = 0;
-            netWriteTimeout_ = 0;
-            destination_ = "";
-            clientId_ = "";
-            filter_ = "";
-            startTimestamp_ = 0L;
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeBytes(1, getUsernameBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeBytes(2, password_);
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                output.writeInt32(3, netReadTimeout_);
-            }
-            if (((bitField0_ & 0x00000008) == 0x00000008)) {
-                output.writeInt32(4, netWriteTimeout_);
-            }
-            if (((bitField0_ & 0x00000010) == 0x00000010)) {
-                output.writeBytes(5, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000020) == 0x00000020)) {
-                output.writeBytes(6, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000040) == 0x00000040)) {
-                output.writeBytes(7, getFilterBytes());
-            }
-            if (((bitField0_ & 0x00000080) == 0x00000080)) {
-                output.writeInt64(8, startTimestamp_);
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(1, getUsernameBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(2, password_);
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt32Size(3, netReadTimeout_);
-            }
-            if (((bitField0_ & 0x00000008) == 0x00000008)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt32Size(4, netWriteTimeout_);
-            }
-            if (((bitField0_ & 0x00000010) == 0x00000010)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(5, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000020) == 0x00000020)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(6, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000040) == 0x00000040)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(7, getFilterBytes());
-            }
-            if (((bitField0_ & 0x00000080) == 0x00000080)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(8, startTimestamp_);
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                            throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(com.google.protobuf.ByteString data,
-                                                                                        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                    throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(byte[] data)
-                                                                                                    throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(byte[] data,
-                                                                                        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                    throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(java.io.InputStream input)
-                                                                                                                  throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(java.io.InputStream input,
-                                                                                        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                    throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                           throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseDelimitedFrom(java.io.InputStream input,
-                                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                             throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                                   throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                    throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientAuth}
-         *
-         * <pre>
-         * client authentication
-         * </pre>
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.ClientAuth)
         com.alibaba.otter.canal.protocol.CanalPacket.ClientAuthOrBuilder {
-
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor;
-            }
-
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.Builder.class);
-            }
-
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                username_ = "";
-                bitField0_ = (bitField0_ & ~0x00000001);
-                password_ = com.google.protobuf.ByteString.EMPTY;
-                bitField0_ = (bitField0_ & ~0x00000002);
-                netReadTimeout_ = 0;
-                bitField0_ = (bitField0_ & ~0x00000004);
-                netWriteTimeout_ = 0;
-                bitField0_ = (bitField0_ & ~0x00000008);
-                destination_ = "";
-                bitField0_ = (bitField0_ & ~0x00000010);
-                clientId_ = "";
-                bitField0_ = (bitField0_ & ~0x00000020);
-                filter_ = "";
-                bitField0_ = (bitField0_ & ~0x00000040);
-                startTimestamp_ = 0L;
-                bitField0_ = (bitField0_ & ~0x00000080);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth result = new com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.username_ = username_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.password_ = password_;
-                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-                    to_bitField0_ |= 0x00000004;
-                }
-                result.netReadTimeout_ = netReadTimeout_;
-                if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-                    to_bitField0_ |= 0x00000008;
-                }
-                result.netWriteTimeout_ = netWriteTimeout_;
-                if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
-                    to_bitField0_ |= 0x00000010;
-                }
-                result.destination_ = destination_;
-                if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
-                    to_bitField0_ |= 0x00000020;
-                }
-                result.clientId_ = clientId_;
-                if (((from_bitField0_ & 0x00000040) == 0x00000040)) {
-                    to_bitField0_ |= 0x00000040;
-                }
-                result.filter_ = filter_;
-                if (((from_bitField0_ & 0x00000080) == 0x00000080)) {
-                    to_bitField0_ |= 0x00000080;
-                }
-                result.startTimestamp_ = startTimestamp_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.getDefaultInstance()) return this;
-                if (other.hasUsername()) {
-                    bitField0_ |= 0x00000001;
-                    username_ = other.username_;
-                    onChanged();
-                }
-                if (other.hasPassword()) {
-                    setPassword(other.getPassword());
-                }
-                if (other.hasNetReadTimeout()) {
-                    setNetReadTimeout(other.getNetReadTimeout());
-                }
-                if (other.hasNetWriteTimeout()) {
-                    setNetWriteTimeout(other.getNetWriteTimeout());
-                }
-                if (other.hasDestination()) {
-                    bitField0_ |= 0x00000010;
-                    destination_ = other.destination_;
-                    onChanged();
-                }
-                if (other.hasClientId()) {
-                    bitField0_ |= 0x00000020;
-                    clientId_ = other.clientId_;
-                    onChanged();
-                }
-                if (other.hasFilter()) {
-                    bitField0_ |= 0x00000040;
-                    filter_ = other.filter_;
-                    onChanged();
-                }
-                if (other.hasStartTimestamp()) {
-                    setStartTimestamp(other.getStartTimestamp());
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int              bitField0_;
-
-            private java.lang.Object username_ = "";
-
-            /**
-             * <code>optional string username = 1;</code>
-             */
-            public boolean hasUsername() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional string username = 1;</code>
-             */
-            public java.lang.String getUsername() {
-                java.lang.Object ref = username_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        username_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string username = 1;</code>
-             */
-            public com.google.protobuf.ByteString getUsernameBytes() {
-                java.lang.Object ref = username_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    username_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string username = 1;</code>
-             */
-            public Builder setUsername(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                username_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string username = 1;</code>
-             */
-            public Builder clearUsername() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                username_ = getDefaultInstance().getUsername();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string username = 1;</code>
-             */
-            public Builder setUsernameBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                username_ = value;
-                onChanged();
-                return this;
-            }
-
-            private com.google.protobuf.ByteString password_ = com.google.protobuf.ByteString.EMPTY;
-
-            /**
-             * <code>optional bytes password = 2;</code>
-             *
-             * <pre>
-             * hashed password with seeds from Handshake message
-             * </pre>
-             */
-            public boolean hasPassword() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional bytes password = 2;</code>
-             *
-             * <pre>
-             * hashed password with seeds from Handshake message
-             * </pre>
-             */
-            public com.google.protobuf.ByteString getPassword() {
-                return password_;
-            }
-
-            /**
-             * <code>optional bytes password = 2;</code>
-             *
-             * <pre>
-             * hashed password with seeds from Handshake message
-             * </pre>
-             */
-            public Builder setPassword(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                password_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional bytes password = 2;</code>
-             *
-             * <pre>
-             * hashed password with seeds from Handshake message
-             * </pre>
-             */
-            public Builder clearPassword() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                password_ = getDefaultInstance().getPassword();
-                onChanged();
-                return this;
-            }
-
-            private int netReadTimeout_;
-
-            /**
-             * <code>optional int32 net_read_timeout = 3 [default = 0];</code>
-             *
-             * <pre>
-             * in seconds
-             * </pre>
-             */
-            public boolean hasNetReadTimeout() {
-                return ((bitField0_ & 0x00000004) == 0x00000004);
-            }
-
-            /**
-             * <code>optional int32 net_read_timeout = 3 [default = 0];</code>
-             *
-             * <pre>
-             * in seconds
-             * </pre>
-             */
-            public int getNetReadTimeout() {
-                return netReadTimeout_;
-            }
-
-            /**
-             * <code>optional int32 net_read_timeout = 3 [default = 0];</code>
-             *
-             * <pre>
-             * in seconds
-             * </pre>
-             */
-            public Builder setNetReadTimeout(int value) {
-                bitField0_ |= 0x00000004;
-                netReadTimeout_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int32 net_read_timeout = 3 [default = 0];</code>
-             *
-             * <pre>
-             * in seconds
-             * </pre>
-             */
-            public Builder clearNetReadTimeout() {
-                bitField0_ = (bitField0_ & ~0x00000004);
-                netReadTimeout_ = 0;
-                onChanged();
-                return this;
-            }
-
-            private int netWriteTimeout_;
-
-            /**
-             * <code>optional int32 net_write_timeout = 4 [default = 0];</code>
-             *
-             * <pre>
-             * in seconds
-             * </pre>
-             */
-            public boolean hasNetWriteTimeout() {
-                return ((bitField0_ & 0x00000008) == 0x00000008);
-            }
-
-            /**
-             * <code>optional int32 net_write_timeout = 4 [default = 0];</code>
-             *
-             * <pre>
-             * in seconds
-             * </pre>
-             */
-            public int getNetWriteTimeout() {
-                return netWriteTimeout_;
-            }
-
-            /**
-             * <code>optional int32 net_write_timeout = 4 [default = 0];</code>
-             *
-             * <pre>
-             * in seconds
-             * </pre>
-             */
-            public Builder setNetWriteTimeout(int value) {
-                bitField0_ |= 0x00000008;
-                netWriteTimeout_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int32 net_write_timeout = 4 [default = 0];</code>
-             *
-             * <pre>
-             * in seconds
-             * </pre>
-             */
-            public Builder clearNetWriteTimeout() {
-                bitField0_ = (bitField0_ & ~0x00000008);
-                netWriteTimeout_ = 0;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object destination_ = "";
-
-            /**
-             * <code>optional string destination = 5;</code>
-             */
-            public boolean hasDestination() {
-                return ((bitField0_ & 0x00000010) == 0x00000010);
-            }
-
-            /**
-             * <code>optional string destination = 5;</code>
-             */
-            public java.lang.String getDestination() {
-                java.lang.Object ref = destination_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        destination_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 5;</code>
-             */
-            public com.google.protobuf.ByteString getDestinationBytes() {
-                java.lang.Object ref = destination_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    destination_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 5;</code>
-             */
-            public Builder setDestination(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000010;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 5;</code>
-             */
-            public Builder clearDestination() {
-                bitField0_ = (bitField0_ & ~0x00000010);
-                destination_ = getDefaultInstance().getDestination();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 5;</code>
-             */
-            public Builder setDestinationBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000010;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object clientId_ = "";
-
-            /**
-             * <code>optional string client_id = 6;</code>
-             */
-            public boolean hasClientId() {
-                return ((bitField0_ & 0x00000020) == 0x00000020);
-            }
-
-            /**
-             * <code>optional string client_id = 6;</code>
-             */
-            public java.lang.String getClientId() {
-                java.lang.Object ref = clientId_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        clientId_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 6;</code>
-             */
-            public com.google.protobuf.ByteString getClientIdBytes() {
-                java.lang.Object ref = clientId_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    clientId_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 6;</code>
-             */
-            public Builder setClientId(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000020;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 6;</code>
-             */
-            public Builder clearClientId() {
-                bitField0_ = (bitField0_ & ~0x00000020);
-                clientId_ = getDefaultInstance().getClientId();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 6;</code>
-             */
-            public Builder setClientIdBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000020;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object filter_ = "";
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public boolean hasFilter() {
-                return ((bitField0_ & 0x00000040) == 0x00000040);
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public java.lang.String getFilter() {
-                java.lang.Object ref = filter_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        filter_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public com.google.protobuf.ByteString getFilterBytes() {
-                java.lang.Object ref = filter_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    filter_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder setFilter(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000040;
-                filter_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder clearFilter() {
-                bitField0_ = (bitField0_ & ~0x00000040);
-                filter_ = getDefaultInstance().getFilter();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder setFilterBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000040;
-                filter_ = value;
-                onChanged();
-                return this;
-            }
-
-            private long startTimestamp_;
-
-            /**
-             * <code>optional int64 start_timestamp = 8;</code>
-             */
-            public boolean hasStartTimestamp() {
-                return ((bitField0_ & 0x00000080) == 0x00000080);
-            }
-
-            /**
-             * <code>optional int64 start_timestamp = 8;</code>
-             */
-            public long getStartTimestamp() {
-                return startTimestamp_;
-            }
-
-            /**
-             * <code>optional int64 start_timestamp = 8;</code>
-             */
-            public Builder setStartTimestamp(long value) {
-                bitField0_ |= 0x00000080;
-                startTimestamp_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 start_timestamp = 8;</code>
-             */
-            public Builder clearStartTimestamp() {
-                bitField0_ = (bitField0_ & ~0x00000080);
-                startTimestamp_ = 0L;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.ClientAuth)
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.class, com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.Builder.class);
+      }
+
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        username_ = "";
 
-        static {
-            defaultInstance = new ClientAuth(true);
-            defaultInstance.initFields();
+        password_ = com.google.protobuf.ByteString.EMPTY;
+
+        destination_ = "";
+
+        clientId_ = "";
+
+        filter_ = "";
+
+        startTimestamp_ = 0L;
+
+        netReadTimeoutPresentCase_ = 0;
+        netReadTimeoutPresent_ = null;
+        netWriteTimeoutPresentCase_ = 0;
+        netWriteTimeoutPresent_ = null;
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.ClientAuth)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth result = new com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth(this);
+        result.username_ = username_;
+        result.password_ = password_;
+        if (netReadTimeoutPresentCase_ == 3) {
+          result.netReadTimeoutPresent_ = netReadTimeoutPresent_;
+        }
+        if (netWriteTimeoutPresentCase_ == 4) {
+          result.netWriteTimeoutPresent_ = netWriteTimeoutPresent_;
+        }
+        result.destination_ = destination_;
+        result.clientId_ = clientId_;
+        result.filter_ = filter_;
+        result.startTimestamp_ = startTimestamp_;
+        result.netReadTimeoutPresentCase_ = netReadTimeoutPresentCase_;
+        result.netWriteTimeoutPresentCase_ = netWriteTimeoutPresentCase_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth.getDefaultInstance()) return this;
+        if (!other.getUsername().isEmpty()) {
+          username_ = other.username_;
+          onChanged();
+        }
+        if (other.getPassword() != com.google.protobuf.ByteString.EMPTY) {
+          setPassword(other.getPassword());
+        }
+        if (!other.getDestination().isEmpty()) {
+          destination_ = other.destination_;
+          onChanged();
+        }
+        if (!other.getClientId().isEmpty()) {
+          clientId_ = other.clientId_;
+          onChanged();
+        }
+        if (!other.getFilter().isEmpty()) {
+          filter_ = other.filter_;
+          onChanged();
+        }
+        if (other.getStartTimestamp() != 0L) {
+          setStartTimestamp(other.getStartTimestamp());
+        }
+        switch (other.getNetReadTimeoutPresentCase()) {
+          case NET_READ_TIMEOUT: {
+            setNetReadTimeout(other.getNetReadTimeout());
+            break;
+          }
+          case NETREADTIMEOUTPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        switch (other.getNetWriteTimeoutPresentCase()) {
+          case NET_WRITE_TIMEOUT: {
+            setNetWriteTimeout(other.getNetWriteTimeout());
+            break;
+          }
+          case NETWRITETIMEOUTPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int netReadTimeoutPresentCase_ = 0;
+      private java.lang.Object netReadTimeoutPresent_;
+      public NetReadTimeoutPresentCase
+          getNetReadTimeoutPresentCase() {
+        return NetReadTimeoutPresentCase.forNumber(
+            netReadTimeoutPresentCase_);
+      }
+
+      public Builder clearNetReadTimeoutPresent() {
+        netReadTimeoutPresentCase_ = 0;
+        netReadTimeoutPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+      private int netWriteTimeoutPresentCase_ = 0;
+      private java.lang.Object netWriteTimeoutPresent_;
+      public NetWriteTimeoutPresentCase
+          getNetWriteTimeoutPresentCase() {
+        return NetWriteTimeoutPresentCase.forNumber(
+            netWriteTimeoutPresentCase_);
+      }
+
+      public Builder clearNetWriteTimeoutPresent() {
+        netWriteTimeoutPresentCase_ = 0;
+        netWriteTimeoutPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+
+      private java.lang.Object username_ = "";
+      /**
+       * <code>string username = 1;</code>
+       */
+      public java.lang.String getUsername() {
+        java.lang.Object ref = username_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          username_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string username = 1;</code>
+       */
+      public com.google.protobuf.ByteString
+          getUsernameBytes() {
+        java.lang.Object ref = username_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          username_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string username = 1;</code>
+       */
+      public Builder setUsername(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        username_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string username = 1;</code>
+       */
+      public Builder clearUsername() {
+        
+        username_ = getDefaultInstance().getUsername();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string username = 1;</code>
+       */
+      public Builder setUsernameBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        username_ = value;
+        onChanged();
+        return this;
+      }
+
+      private com.google.protobuf.ByteString password_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <pre>
+       * hashed password with seeds from Handshake message
+       * </pre>
+       *
+       * <code>bytes password = 2;</code>
+       */
+      public com.google.protobuf.ByteString getPassword() {
+        return password_;
+      }
+      /**
+       * <pre>
+       * hashed password with seeds from Handshake message
+       * </pre>
+       *
+       * <code>bytes password = 2;</code>
+       */
+      public Builder setPassword(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        password_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * hashed password with seeds from Handshake message
+       * </pre>
+       *
+       * <code>bytes password = 2;</code>
+       */
+      public Builder clearPassword() {
+        
+        password_ = getDefaultInstance().getPassword();
+        onChanged();
+        return this;
+      }
+
+      /**
+       * <pre>
+       * in seconds
+       * </pre>
+       *
+       * <code>int32 net_read_timeout = 3;</code>
+       */
+      public int getNetReadTimeout() {
+        if (netReadTimeoutPresentCase_ == 3) {
+          return (java.lang.Integer) netReadTimeoutPresent_;
+        }
+        return 0;
+      }
+      /**
+       * <pre>
+       * in seconds
+       * </pre>
+       *
+       * <code>int32 net_read_timeout = 3;</code>
+       */
+      public Builder setNetReadTimeout(int value) {
+        netReadTimeoutPresentCase_ = 3;
+        netReadTimeoutPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * in seconds
+       * </pre>
+       *
+       * <code>int32 net_read_timeout = 3;</code>
+       */
+      public Builder clearNetReadTimeout() {
+        if (netReadTimeoutPresentCase_ == 3) {
+          netReadTimeoutPresentCase_ = 0;
+          netReadTimeoutPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+
+      /**
+       * <pre>
+       * in seconds
+       * </pre>
+       *
+       * <code>int32 net_write_timeout = 4;</code>
+       */
+      public int getNetWriteTimeout() {
+        if (netWriteTimeoutPresentCase_ == 4) {
+          return (java.lang.Integer) netWriteTimeoutPresent_;
+        }
+        return 0;
+      }
+      /**
+       * <pre>
+       * in seconds
+       * </pre>
+       *
+       * <code>int32 net_write_timeout = 4;</code>
+       */
+      public Builder setNetWriteTimeout(int value) {
+        netWriteTimeoutPresentCase_ = 4;
+        netWriteTimeoutPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * in seconds
+       * </pre>
+       *
+       * <code>int32 net_write_timeout = 4;</code>
+       */
+      public Builder clearNetWriteTimeout() {
+        if (netWriteTimeoutPresentCase_ == 4) {
+          netWriteTimeoutPresentCase_ = 0;
+          netWriteTimeoutPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+
+      private java.lang.Object destination_ = "";
+      /**
+       * <code>string destination = 5;</code>
+       */
+      public java.lang.String getDestination() {
+        java.lang.Object ref = destination_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          destination_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string destination = 5;</code>
+       */
+      public com.google.protobuf.ByteString
+          getDestinationBytes() {
+        java.lang.Object ref = destination_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          destination_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string destination = 5;</code>
+       */
+      public Builder setDestination(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 5;</code>
+       */
+      public Builder clearDestination() {
+        
+        destination_ = getDefaultInstance().getDestination();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 5;</code>
+       */
+      public Builder setDestinationBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object clientId_ = "";
+      /**
+       * <code>string client_id = 6;</code>
+       */
+      public java.lang.String getClientId() {
+        java.lang.Object ref = clientId_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          clientId_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 6;</code>
+       */
+      public com.google.protobuf.ByteString
+          getClientIdBytes() {
+        java.lang.Object ref = clientId_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          clientId_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 6;</code>
+       */
+      public Builder setClientId(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 6;</code>
+       */
+      public Builder clearClientId() {
+        
+        clientId_ = getDefaultInstance().getClientId();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 6;</code>
+       */
+      public Builder setClientIdBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object filter_ = "";
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public java.lang.String getFilter() {
+        java.lang.Object ref = filter_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          filter_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public com.google.protobuf.ByteString
+          getFilterBytes() {
+        java.lang.Object ref = filter_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          filter_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder setFilter(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        filter_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder clearFilter() {
+        
+        filter_ = getDefaultInstance().getFilter();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder setFilterBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        filter_ = value;
+        onChanged();
+        return this;
+      }
+
+      private long startTimestamp_ ;
+      /**
+       * <code>int64 start_timestamp = 8;</code>
+       */
+      public long getStartTimestamp() {
+        return startTimestamp_;
+      }
+      /**
+       * <code>int64 start_timestamp = 8;</code>
+       */
+      public Builder setStartTimestamp(long value) {
+        
+        startTimestamp_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 start_timestamp = 8;</code>
+       */
+      public Builder clearStartTimestamp() {
+        
+        startTimestamp_ = 0L;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.ClientAuth)
     }
 
-    public interface AckOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Ack)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional int32 error_code = 1 [default = 0];</code>
-         */
-        boolean hasErrorCode();
-
-        /**
-         * <code>optional int32 error_code = 1 [default = 0];</code>
-         */
-        int getErrorCode();
-
-        /**
-         * <code>optional string error_message = 2;</code>
-         *
-         * <pre>
-         * if something like compression is not supported, erorr_message will tell about it.
-         * </pre>
-         */
-        boolean hasErrorMessage();
-
-        /**
-         * <code>optional string error_message = 2;</code>
-         *
-         * <pre>
-         * if something like compression is not supported, erorr_message will tell about it.
-         * </pre>
-         */
-        java.lang.String getErrorMessage();
-
-        /**
-         * <code>optional string error_message = 2;</code>
-         *
-         * <pre>
-         * if something like compression is not supported, erorr_message will tell about it.
-         * </pre>
-         */
-        com.google.protobuf.ByteString getErrorMessageBytes();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.ClientAuth)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<ClientAuth>
+        PARSER = new com.google.protobuf.AbstractParser<ClientAuth>() {
+      @java.lang.Override
+      public ClientAuth parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new ClientAuth(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<ClientAuth> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<ClientAuth> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.ClientAuth getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface AckOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Ack)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>int32 error_code = 1;</code>
+     */
+    int getErrorCode();
+
+    /**
+     * <pre>
+     * if something like compression is not supported, erorr_message will tell about it.
+     * </pre>
+     *
+     * <code>string error_message = 2;</code>
+     */
+    java.lang.String getErrorMessage();
+    /**
+     * <pre>
+     * if something like compression is not supported, erorr_message will tell about it.
+     * </pre>
+     *
+     * <code>string error_message = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getErrorMessageBytes();
+
+    public com.alibaba.otter.canal.protocol.CanalPacket.Ack.ErrorCodePresentCase getErrorCodePresentCase();
+  }
+  /**
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Ack}
+   */
+  public  static final class Ack extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Ack)
+      AckOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use Ack.newBuilder() to construct.
+    private Ack(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private Ack() {
+      errorMessage_ = "";
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Ack(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 8: {
+              errorCodePresentCase_ = 1;
+              errorCodePresent_ = input.readInt32();
+              break;
+            }
+            case 18: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              errorMessage_ = s;
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.Ack.class, com.alibaba.otter.canal.protocol.CanalPacket.Ack.Builder.class);
+    }
+
+    private int errorCodePresentCase_ = 0;
+    private java.lang.Object errorCodePresent_;
+    public enum ErrorCodePresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      ERROR_CODE(1),
+      ERRORCODEPRESENT_NOT_SET(0);
+      private final int value;
+      private ErrorCodePresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static ErrorCodePresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static ErrorCodePresentCase forNumber(int value) {
+        switch (value) {
+          case 1: return ERROR_CODE;
+          case 0: return ERRORCODEPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public ErrorCodePresentCase
+    getErrorCodePresentCase() {
+      return ErrorCodePresentCase.forNumber(
+          errorCodePresentCase_);
+    }
+
+    public static final int ERROR_CODE_FIELD_NUMBER = 1;
+    /**
+     * <code>int32 error_code = 1;</code>
+     */
+    public int getErrorCode() {
+      if (errorCodePresentCase_ == 1) {
+        return (java.lang.Integer) errorCodePresent_;
+      }
+      return 0;
+    }
+
+    public static final int ERROR_MESSAGE_FIELD_NUMBER = 2;
+    private volatile java.lang.Object errorMessage_;
+    /**
+     * <pre>
+     * if something like compression is not supported, erorr_message will tell about it.
+     * </pre>
+     *
+     * <code>string error_message = 2;</code>
+     */
+    public java.lang.String getErrorMessage() {
+      java.lang.Object ref = errorMessage_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        errorMessage_ = s;
+        return s;
+      }
+    }
+    /**
+     * <pre>
+     * if something like compression is not supported, erorr_message will tell about it.
+     * </pre>
+     *
+     * <code>string error_message = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getErrorMessageBytes() {
+      java.lang.Object ref = errorMessage_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        errorMessage_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (errorCodePresentCase_ == 1) {
+        output.writeInt32(
+            1, (int)((java.lang.Integer) errorCodePresent_));
+      }
+      if (!getErrorMessageBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, errorMessage_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (errorCodePresentCase_ == 1) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(
+              1, (int)((java.lang.Integer) errorCodePresent_));
+      }
+      if (!getErrorMessageBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, errorMessage_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.Ack)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.Ack other = (com.alibaba.otter.canal.protocol.CanalPacket.Ack) obj;
+
+      boolean result = true;
+      result = result && getErrorMessage()
+          .equals(other.getErrorMessage());
+      result = result && getErrorCodePresentCase().equals(
+          other.getErrorCodePresentCase());
+      if (!result) return false;
+      switch (errorCodePresentCase_) {
+        case 1:
+          result = result && (getErrorCode()
+              == other.getErrorCode());
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + ERROR_MESSAGE_FIELD_NUMBER;
+      hash = (53 * hash) + getErrorMessage().hashCode();
+      switch (errorCodePresentCase_) {
+        case 1:
+          hash = (37 * hash) + ERROR_CODE_FIELD_NUMBER;
+          hash = (53 * hash) + getErrorCode();
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Ack prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
      * Protobuf type {@code com.alibaba.otter.canal.protocol.Ack}
      */
-    public static final class Ack extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Ack)
-    AckOrBuilder {
-
-        // Use Ack.newBuilder() to construct.
-        private Ack(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private Ack(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final Ack defaultInstance;
-
-        public static Ack getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public Ack getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private Ack(com.google.protobuf.CodedInputStream input,
-                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 8: {
-                            bitField0_ |= 0x00000001;
-                            errorCode_ = input.readInt32();
-                            break;
-                        }
-                        case 18: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000002;
-                            errorMessage_ = bs;
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Ack.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.Ack.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<Ack> PARSER = new com.google.protobuf.AbstractParser<Ack>() {
-
-                                                                 public Ack parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                             com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                         throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                     return new Ack(input, extensionRegistry);
-                                                                 }
-                                                             };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<Ack> getParserForType() {
-            return PARSER;
-        }
-
-        private int             bitField0_;
-        public static final int ERROR_CODE_FIELD_NUMBER = 1;
-        private int             errorCode_;
-
-        /**
-         * <code>optional int32 error_code = 1 [default = 0];</code>
-         */
-        public boolean hasErrorCode() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional int32 error_code = 1 [default = 0];</code>
-         */
-        public int getErrorCode() {
-            return errorCode_;
-        }
-
-        public static final int  ERROR_MESSAGE_FIELD_NUMBER = 2;
-        private java.lang.Object errorMessage_;
-
-        /**
-         * <code>optional string error_message = 2;</code>
-         *
-         * <pre>
-         * if something like compression is not supported, erorr_message will tell about it.
-         * </pre>
-         */
-        public boolean hasErrorMessage() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional string error_message = 2;</code>
-         *
-         * <pre>
-         * if something like compression is not supported, erorr_message will tell about it.
-         * </pre>
-         */
-        public java.lang.String getErrorMessage() {
-            java.lang.Object ref = errorMessage_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    errorMessage_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string error_message = 2;</code>
-         *
-         * <pre>
-         * if something like compression is not supported, erorr_message will tell about it.
-         * </pre>
-         */
-        public com.google.protobuf.ByteString getErrorMessageBytes() {
-            java.lang.Object ref = errorMessage_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                errorMessage_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        private void initFields() {
-            errorCode_ = 0;
-            errorMessage_ = "";
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeInt32(1, errorCode_);
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeBytes(2, getErrorMessageBytes());
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt32Size(1, errorCode_);
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(2, getErrorMessageBytes());
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                     throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(com.google.protobuf.ByteString data,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(byte[] data)
-                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(byte[] data,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(java.io.InputStream input)
-                                                                                                           throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(java.io.InputStream input,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                    throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseDelimitedFrom(java.io.InputStream input,
-                                                                                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                      throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                            throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Ack parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Ack prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.Ack}
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Ack)
         com.alibaba.otter.canal.protocol.CanalPacket.AckOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.Ack.class, com.alibaba.otter.canal.protocol.CanalPacket.Ack.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Ack.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.Ack.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.Ack.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.Ack.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                errorCode_ = 0;
-                bitField0_ = (bitField0_ & ~0x00000001);
-                errorMessage_ = "";
-                bitField0_ = (bitField0_ & ~0x00000002);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Ack getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.Ack.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Ack build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Ack result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Ack buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Ack result = new com.alibaba.otter.canal.protocol.CanalPacket.Ack(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.errorCode_ = errorCode_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.errorMessage_ = errorMessage_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Ack) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Ack) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Ack other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.Ack.getDefaultInstance()) return this;
-                if (other.hasErrorCode()) {
-                    setErrorCode(other.getErrorCode());
-                }
-                if (other.hasErrorMessage()) {
-                    bitField0_ |= 0x00000002;
-                    errorMessage_ = other.errorMessage_;
-                    onChanged();
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.Ack parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Ack) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int bitField0_;
-
-            private int errorCode_;
-
-            /**
-             * <code>optional int32 error_code = 1 [default = 0];</code>
-             */
-            public boolean hasErrorCode() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional int32 error_code = 1 [default = 0];</code>
-             */
-            public int getErrorCode() {
-                return errorCode_;
-            }
-
-            /**
-             * <code>optional int32 error_code = 1 [default = 0];</code>
-             */
-            public Builder setErrorCode(int value) {
-                bitField0_ |= 0x00000001;
-                errorCode_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int32 error_code = 1 [default = 0];</code>
-             */
-            public Builder clearErrorCode() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                errorCode_ = 0;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object errorMessage_ = "";
-
-            /**
-             * <code>optional string error_message = 2;</code>
-             *
-             * <pre>
-             * if something like compression is not supported, erorr_message will tell about it.
-             * </pre>
-             */
-            public boolean hasErrorMessage() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional string error_message = 2;</code>
-             *
-             * <pre>
-             * if something like compression is not supported, erorr_message will tell about it.
-             * </pre>
-             */
-            public java.lang.String getErrorMessage() {
-                java.lang.Object ref = errorMessage_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        errorMessage_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string error_message = 2;</code>
-             *
-             * <pre>
-             * if something like compression is not supported, erorr_message will tell about it.
-             * </pre>
-             */
-            public com.google.protobuf.ByteString getErrorMessageBytes() {
-                java.lang.Object ref = errorMessage_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    errorMessage_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string error_message = 2;</code>
-             *
-             * <pre>
-             * if something like compression is not supported, erorr_message will tell about it.
-             * </pre>
-             */
-            public Builder setErrorMessage(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                errorMessage_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string error_message = 2;</code>
-             *
-             * <pre>
-             * if something like compression is not supported, erorr_message will tell about it.
-             * </pre>
-             */
-            public Builder clearErrorMessage() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                errorMessage_ = getDefaultInstance().getErrorMessage();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string error_message = 2;</code>
-             *
-             * <pre>
-             * if something like compression is not supported, erorr_message will tell about it.
-             * </pre>
-             */
-            public Builder setErrorMessageBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                errorMessage_ = value;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Ack)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        errorMessage_ = "";
 
-        static {
-            defaultInstance = new Ack(true);
-            defaultInstance.initFields();
+        errorCodePresentCase_ = 0;
+        errorCodePresent_ = null;
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Ack getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.Ack.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Ack build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Ack result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Ack)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Ack buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Ack result = new com.alibaba.otter.canal.protocol.CanalPacket.Ack(this);
+        if (errorCodePresentCase_ == 1) {
+          result.errorCodePresent_ = errorCodePresent_;
+        }
+        result.errorMessage_ = errorMessage_;
+        result.errorCodePresentCase_ = errorCodePresentCase_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Ack) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Ack)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Ack other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.Ack.getDefaultInstance()) return this;
+        if (!other.getErrorMessage().isEmpty()) {
+          errorMessage_ = other.errorMessage_;
+          onChanged();
+        }
+        switch (other.getErrorCodePresentCase()) {
+          case ERROR_CODE: {
+            setErrorCode(other.getErrorCode());
+            break;
+          }
+          case ERRORCODEPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.Ack parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Ack) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int errorCodePresentCase_ = 0;
+      private java.lang.Object errorCodePresent_;
+      public ErrorCodePresentCase
+          getErrorCodePresentCase() {
+        return ErrorCodePresentCase.forNumber(
+            errorCodePresentCase_);
+      }
+
+      public Builder clearErrorCodePresent() {
+        errorCodePresentCase_ = 0;
+        errorCodePresent_ = null;
+        onChanged();
+        return this;
+      }
+
+
+      /**
+       * <code>int32 error_code = 1;</code>
+       */
+      public int getErrorCode() {
+        if (errorCodePresentCase_ == 1) {
+          return (java.lang.Integer) errorCodePresent_;
+        }
+        return 0;
+      }
+      /**
+       * <code>int32 error_code = 1;</code>
+       */
+      public Builder setErrorCode(int value) {
+        errorCodePresentCase_ = 1;
+        errorCodePresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int32 error_code = 1;</code>
+       */
+      public Builder clearErrorCode() {
+        if (errorCodePresentCase_ == 1) {
+          errorCodePresentCase_ = 0;
+          errorCodePresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+
+      private java.lang.Object errorMessage_ = "";
+      /**
+       * <pre>
+       * if something like compression is not supported, erorr_message will tell about it.
+       * </pre>
+       *
+       * <code>string error_message = 2;</code>
+       */
+      public java.lang.String getErrorMessage() {
+        java.lang.Object ref = errorMessage_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          errorMessage_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <pre>
+       * if something like compression is not supported, erorr_message will tell about it.
+       * </pre>
+       *
+       * <code>string error_message = 2;</code>
+       */
+      public com.google.protobuf.ByteString
+          getErrorMessageBytes() {
+        java.lang.Object ref = errorMessage_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          errorMessage_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <pre>
+       * if something like compression is not supported, erorr_message will tell about it.
+       * </pre>
+       *
+       * <code>string error_message = 2;</code>
+       */
+      public Builder setErrorMessage(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        errorMessage_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * if something like compression is not supported, erorr_message will tell about it.
+       * </pre>
+       *
+       * <code>string error_message = 2;</code>
+       */
+      public Builder clearErrorMessage() {
+        
+        errorMessage_ = getDefaultInstance().getErrorMessage();
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * if something like compression is not supported, erorr_message will tell about it.
+       * </pre>
+       *
+       * <code>string error_message = 2;</code>
+       */
+      public Builder setErrorMessageBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        errorMessage_ = value;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Ack)
     }
 
-    public interface ClientAckOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.ClientAck)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        boolean hasDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        java.lang.String getDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        com.google.protobuf.ByteString getDestinationBytes();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        boolean hasClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        java.lang.String getClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        com.google.protobuf.ByteString getClientIdBytes();
-
-        /**
-         * <code>optional int64 batch_id = 3;</code>
-         */
-        boolean hasBatchId();
-
-        /**
-         * <code>optional int64 batch_id = 3;</code>
-         */
-        long getBatchId();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Ack)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.Ack DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.Ack();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Ack getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Ack>
+        PARSER = new com.google.protobuf.AbstractParser<Ack>() {
+      @java.lang.Override
+      public Ack parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Ack(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Ack> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Ack> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.Ack getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface ClientAckOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.ClientAck)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string destination = 1;</code>
+     */
+    java.lang.String getDestination();
+    /**
+     * <code>string destination = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getDestinationBytes();
+
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    java.lang.String getClientId();
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getClientIdBytes();
+
+    /**
+     * <code>int64 batch_id = 3;</code>
+     */
+    long getBatchId();
+  }
+  /**
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientAck}
+   */
+  public  static final class ClientAck extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.ClientAck)
+      ClientAckOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use ClientAck.newBuilder() to construct.
+    private ClientAck(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private ClientAck() {
+      destination_ = "";
+      clientId_ = "";
+      batchId_ = 0L;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private ClientAck(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              destination_ = s;
+              break;
+            }
+            case 18: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              clientId_ = s;
+              break;
+            }
+            case 24: {
+
+              batchId_ = input.readInt64();
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.class, com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.Builder.class);
+    }
+
+    public static final int DESTINATION_FIELD_NUMBER = 1;
+    private volatile java.lang.Object destination_;
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public java.lang.String getDestination() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        destination_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDestinationBytes() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        destination_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int CLIENT_ID_FIELD_NUMBER = 2;
+    private volatile java.lang.Object clientId_;
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public java.lang.String getClientId() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        clientId_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getClientIdBytes() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        clientId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int BATCH_ID_FIELD_NUMBER = 3;
+    private long batchId_;
+    /**
+     * <code>int64 batch_id = 3;</code>
+     */
+    public long getBatchId() {
+      return batchId_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!getDestinationBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, clientId_);
+      }
+      if (batchId_ != 0L) {
+        output.writeInt64(3, batchId_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!getDestinationBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, clientId_);
+      }
+      if (batchId_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(3, batchId_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientAck)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.ClientAck other = (com.alibaba.otter.canal.protocol.CanalPacket.ClientAck) obj;
+
+      boolean result = true;
+      result = result && getDestination()
+          .equals(other.getDestination());
+      result = result && getClientId()
+          .equals(other.getClientId());
+      result = result && (getBatchId()
+          == other.getBatchId());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + DESTINATION_FIELD_NUMBER;
+      hash = (53 * hash) + getDestination().hashCode();
+      hash = (37 * hash) + CLIENT_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getClientId().hashCode();
+      hash = (37 * hash) + BATCH_ID_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getBatchId());
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.ClientAck prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
      * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientAck}
      */
-    public static final class ClientAck extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.ClientAck)
-    ClientAckOrBuilder {
-
-        // Use ClientAck.newBuilder() to construct.
-        private ClientAck(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private ClientAck(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final ClientAck defaultInstance;
-
-        public static ClientAck getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public ClientAck getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private ClientAck(com.google.protobuf.CodedInputStream input,
-                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                      throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 10: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000001;
-                            destination_ = bs;
-                            break;
-                        }
-                        case 18: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000002;
-                            clientId_ = bs;
-                            break;
-                        }
-                        case 24: {
-                            bitField0_ |= 0x00000004;
-                            batchId_ = input.readInt64();
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<ClientAck> PARSER = new com.google.protobuf.AbstractParser<ClientAck>() {
-
-                                                                       public ClientAck parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                                         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                                     throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                           return new ClientAck(input,
-                                                                               extensionRegistry);
-                                                                       }
-                                                                   };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<ClientAck> getParserForType() {
-            return PARSER;
-        }
-
-        private int              bitField0_;
-        public static final int  DESTINATION_FIELD_NUMBER = 1;
-        private java.lang.Object destination_;
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public boolean hasDestination() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public java.lang.String getDestination() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    destination_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public com.google.protobuf.ByteString getDestinationBytes() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                destination_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int  CLIENT_ID_FIELD_NUMBER = 2;
-        private java.lang.Object clientId_;
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public boolean hasClientId() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public java.lang.String getClientId() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    clientId_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public com.google.protobuf.ByteString getClientIdBytes() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                clientId_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int BATCH_ID_FIELD_NUMBER = 3;
-        private long            batchId_;
-
-        /**
-         * <code>optional int64 batch_id = 3;</code>
-         */
-        public boolean hasBatchId() {
-            return ((bitField0_ & 0x00000004) == 0x00000004);
-        }
-
-        /**
-         * <code>optional int64 batch_id = 3;</code>
-         */
-        public long getBatchId() {
-            return batchId_;
-        }
-
-        private void initFields() {
-            destination_ = "";
-            clientId_ = "";
-            batchId_ = 0L;
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeBytes(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeBytes(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                output.writeInt64(3, batchId_);
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(3, batchId_);
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                           throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(com.google.protobuf.ByteString data,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(byte[] data)
-                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(byte[] data,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(java.io.InputStream input)
-                                                                                                                 throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(java.io.InputStream input,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                          throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseDelimitedFrom(java.io.InputStream input,
-                                                                                                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                            throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                                  throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                   throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.ClientAck prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientAck}
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.ClientAck)
         com.alibaba.otter.canal.protocol.CanalPacket.ClientAckOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.class, com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                destination_ = "";
-                bitField0_ = (bitField0_ & ~0x00000001);
-                clientId_ = "";
-                bitField0_ = (bitField0_ & ~0x00000002);
-                batchId_ = 0L;
-                bitField0_ = (bitField0_ & ~0x00000004);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientAck getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientAck build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientAck result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientAck buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientAck result = new com.alibaba.otter.canal.protocol.CanalPacket.ClientAck(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.destination_ = destination_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.clientId_ = clientId_;
-                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-                    to_bitField0_ |= 0x00000004;
-                }
-                result.batchId_ = batchId_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientAck) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.ClientAck) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.ClientAck other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.getDefaultInstance()) return this;
-                if (other.hasDestination()) {
-                    bitField0_ |= 0x00000001;
-                    destination_ = other.destination_;
-                    onChanged();
-                }
-                if (other.hasClientId()) {
-                    bitField0_ |= 0x00000002;
-                    clientId_ = other.clientId_;
-                    onChanged();
-                }
-                if (other.hasBatchId()) {
-                    setBatchId(other.getBatchId());
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.ClientAck) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int              bitField0_;
-
-            private java.lang.Object destination_ = "";
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public boolean hasDestination() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public java.lang.String getDestination() {
-                java.lang.Object ref = destination_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        destination_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public com.google.protobuf.ByteString getDestinationBytes() {
-                java.lang.Object ref = destination_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    destination_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestination(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder clearDestination() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                destination_ = getDefaultInstance().getDestination();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestinationBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object clientId_ = "";
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public boolean hasClientId() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public java.lang.String getClientId() {
-                java.lang.Object ref = clientId_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        clientId_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public com.google.protobuf.ByteString getClientIdBytes() {
-                java.lang.Object ref = clientId_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    clientId_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientId(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder clearClientId() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                clientId_ = getDefaultInstance().getClientId();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientIdBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            private long batchId_;
-
-            /**
-             * <code>optional int64 batch_id = 3;</code>
-             */
-            public boolean hasBatchId() {
-                return ((bitField0_ & 0x00000004) == 0x00000004);
-            }
-
-            /**
-             * <code>optional int64 batch_id = 3;</code>
-             */
-            public long getBatchId() {
-                return batchId_;
-            }
-
-            /**
-             * <code>optional int64 batch_id = 3;</code>
-             */
-            public Builder setBatchId(long value) {
-                bitField0_ |= 0x00000004;
-                batchId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 batch_id = 3;</code>
-             */
-            public Builder clearBatchId() {
-                bitField0_ = (bitField0_ & ~0x00000004);
-                batchId_ = 0L;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.ClientAck)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        destination_ = "";
 
-        static {
-            defaultInstance = new ClientAck(true);
-            defaultInstance.initFields();
+        clientId_ = "";
+
+        batchId_ = 0L;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientAck getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientAck build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientAck result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.ClientAck)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientAck buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientAck result = new com.alibaba.otter.canal.protocol.CanalPacket.ClientAck(this);
+        result.destination_ = destination_;
+        result.clientId_ = clientId_;
+        result.batchId_ = batchId_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientAck) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.ClientAck)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.ClientAck other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.ClientAck.getDefaultInstance()) return this;
+        if (!other.getDestination().isEmpty()) {
+          destination_ = other.destination_;
+          onChanged();
+        }
+        if (!other.getClientId().isEmpty()) {
+          clientId_ = other.clientId_;
+          onChanged();
+        }
+        if (other.getBatchId() != 0L) {
+          setBatchId(other.getBatchId());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientAck parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.ClientAck) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private java.lang.Object destination_ = "";
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public java.lang.String getDestination() {
+        java.lang.Object ref = destination_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          destination_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public com.google.protobuf.ByteString
+          getDestinationBytes() {
+        java.lang.Object ref = destination_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          destination_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestination(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder clearDestination() {
+        
+        destination_ = getDefaultInstance().getDestination();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestinationBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object clientId_ = "";
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public java.lang.String getClientId() {
+        java.lang.Object ref = clientId_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          clientId_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public com.google.protobuf.ByteString
+          getClientIdBytes() {
+        java.lang.Object ref = clientId_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          clientId_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientId(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder clearClientId() {
+        
+        clientId_ = getDefaultInstance().getClientId();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientIdBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+
+      private long batchId_ ;
+      /**
+       * <code>int64 batch_id = 3;</code>
+       */
+      public long getBatchId() {
+        return batchId_;
+      }
+      /**
+       * <code>int64 batch_id = 3;</code>
+       */
+      public Builder setBatchId(long value) {
+        
+        batchId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 batch_id = 3;</code>
+       */
+      public Builder clearBatchId() {
+        
+        batchId_ = 0L;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.ClientAck)
     }
 
-    public interface SubOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Sub)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        boolean hasDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        java.lang.String getDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        com.google.protobuf.ByteString getDestinationBytes();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        boolean hasClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        java.lang.String getClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        com.google.protobuf.ByteString getClientIdBytes();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        boolean hasFilter();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        java.lang.String getFilter();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        com.google.protobuf.ByteString getFilterBytes();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.ClientAck)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.ClientAck DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.ClientAck();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientAck getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<ClientAck>
+        PARSER = new com.google.protobuf.AbstractParser<ClientAck>() {
+      @java.lang.Override
+      public ClientAck parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new ClientAck(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<ClientAck> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<ClientAck> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.ClientAck getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface SubOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Sub)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string destination = 1;</code>
+     */
+    java.lang.String getDestination();
+    /**
+     * <code>string destination = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getDestinationBytes();
+
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    java.lang.String getClientId();
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getClientIdBytes();
+
+    /**
+     * <code>string filter = 7;</code>
+     */
+    java.lang.String getFilter();
+    /**
+     * <code>string filter = 7;</code>
+     */
+    com.google.protobuf.ByteString
+        getFilterBytes();
+  }
+  /**
+   * <pre>
+   * subscription
+   * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Sub}
+   */
+  public  static final class Sub extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Sub)
+      SubOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use Sub.newBuilder() to construct.
+    private Sub(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private Sub() {
+      destination_ = "";
+      clientId_ = "";
+      filter_ = "";
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Sub(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              destination_ = s;
+              break;
+            }
+            case 18: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              clientId_ = s;
+              break;
+            }
+            case 58: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              filter_ = s;
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.Sub.class, com.alibaba.otter.canal.protocol.CanalPacket.Sub.Builder.class);
+    }
+
+    public static final int DESTINATION_FIELD_NUMBER = 1;
+    private volatile java.lang.Object destination_;
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public java.lang.String getDestination() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        destination_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDestinationBytes() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        destination_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int CLIENT_ID_FIELD_NUMBER = 2;
+    private volatile java.lang.Object clientId_;
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public java.lang.String getClientId() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        clientId_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getClientIdBytes() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        clientId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int FILTER_FIELD_NUMBER = 7;
+    private volatile java.lang.Object filter_;
+    /**
+     * <code>string filter = 7;</code>
+     */
+    public java.lang.String getFilter() {
+      java.lang.Object ref = filter_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        filter_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string filter = 7;</code>
+     */
+    public com.google.protobuf.ByteString
+        getFilterBytes() {
+      java.lang.Object ref = filter_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        filter_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!getDestinationBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, clientId_);
+      }
+      if (!getFilterBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 7, filter_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!getDestinationBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, clientId_);
+      }
+      if (!getFilterBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, filter_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.Sub)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.Sub other = (com.alibaba.otter.canal.protocol.CanalPacket.Sub) obj;
+
+      boolean result = true;
+      result = result && getDestination()
+          .equals(other.getDestination());
+      result = result && getClientId()
+          .equals(other.getClientId());
+      result = result && getFilter()
+          .equals(other.getFilter());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + DESTINATION_FIELD_NUMBER;
+      hash = (53 * hash) + getDestination().hashCode();
+      hash = (37 * hash) + CLIENT_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getClientId().hashCode();
+      hash = (37 * hash) + FILTER_FIELD_NUMBER;
+      hash = (53 * hash) + getFilter().hashCode();
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Sub prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Sub}
-     *
      * <pre>
      * subscription
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Sub}
      */
-    public static final class Sub extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Sub)
-    SubOrBuilder {
-
-        // Use Sub.newBuilder() to construct.
-        private Sub(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private Sub(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final Sub defaultInstance;
-
-        public static Sub getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public Sub getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private Sub(com.google.protobuf.CodedInputStream input,
-                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 10: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000001;
-                            destination_ = bs;
-                            break;
-                        }
-                        case 18: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000002;
-                            clientId_ = bs;
-                            break;
-                        }
-                        case 58: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000004;
-                            filter_ = bs;
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Sub.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.Sub.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<Sub> PARSER = new com.google.protobuf.AbstractParser<Sub>() {
-
-                                                                 public Sub parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                             com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                         throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                     return new Sub(input, extensionRegistry);
-                                                                 }
-                                                             };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<Sub> getParserForType() {
-            return PARSER;
-        }
-
-        private int              bitField0_;
-        public static final int  DESTINATION_FIELD_NUMBER = 1;
-        private java.lang.Object destination_;
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public boolean hasDestination() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public java.lang.String getDestination() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    destination_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public com.google.protobuf.ByteString getDestinationBytes() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                destination_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int  CLIENT_ID_FIELD_NUMBER = 2;
-        private java.lang.Object clientId_;
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public boolean hasClientId() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public java.lang.String getClientId() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    clientId_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public com.google.protobuf.ByteString getClientIdBytes() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                clientId_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int  FILTER_FIELD_NUMBER = 7;
-        private java.lang.Object filter_;
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public boolean hasFilter() {
-            return ((bitField0_ & 0x00000004) == 0x00000004);
-        }
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public java.lang.String getFilter() {
-            java.lang.Object ref = filter_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    filter_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public com.google.protobuf.ByteString getFilterBytes() {
-            java.lang.Object ref = filter_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                filter_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        private void initFields() {
-            destination_ = "";
-            clientId_ = "";
-            filter_ = "";
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeBytes(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeBytes(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                output.writeBytes(7, getFilterBytes());
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(7, getFilterBytes());
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                     throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(com.google.protobuf.ByteString data,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(byte[] data)
-                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(byte[] data,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(java.io.InputStream input)
-                                                                                                           throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(java.io.InputStream input,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                    throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseDelimitedFrom(java.io.InputStream input,
-                                                                                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                      throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                            throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Sub parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Sub prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.Sub}
-         *
-         * <pre>
-         * subscription
-         * </pre>
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Sub)
         com.alibaba.otter.canal.protocol.CanalPacket.SubOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.Sub.class, com.alibaba.otter.canal.protocol.CanalPacket.Sub.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Sub.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.Sub.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.Sub.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.Sub.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                destination_ = "";
-                bitField0_ = (bitField0_ & ~0x00000001);
-                clientId_ = "";
-                bitField0_ = (bitField0_ & ~0x00000002);
-                filter_ = "";
-                bitField0_ = (bitField0_ & ~0x00000004);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Sub getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.Sub.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Sub build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Sub result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Sub buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Sub result = new com.alibaba.otter.canal.protocol.CanalPacket.Sub(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.destination_ = destination_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.clientId_ = clientId_;
-                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-                    to_bitField0_ |= 0x00000004;
-                }
-                result.filter_ = filter_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Sub) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Sub) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Sub other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.Sub.getDefaultInstance()) return this;
-                if (other.hasDestination()) {
-                    bitField0_ |= 0x00000001;
-                    destination_ = other.destination_;
-                    onChanged();
-                }
-                if (other.hasClientId()) {
-                    bitField0_ |= 0x00000002;
-                    clientId_ = other.clientId_;
-                    onChanged();
-                }
-                if (other.hasFilter()) {
-                    bitField0_ |= 0x00000004;
-                    filter_ = other.filter_;
-                    onChanged();
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.Sub parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Sub) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int              bitField0_;
-
-            private java.lang.Object destination_ = "";
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public boolean hasDestination() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public java.lang.String getDestination() {
-                java.lang.Object ref = destination_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        destination_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public com.google.protobuf.ByteString getDestinationBytes() {
-                java.lang.Object ref = destination_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    destination_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestination(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder clearDestination() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                destination_ = getDefaultInstance().getDestination();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestinationBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object clientId_ = "";
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public boolean hasClientId() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public java.lang.String getClientId() {
-                java.lang.Object ref = clientId_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        clientId_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public com.google.protobuf.ByteString getClientIdBytes() {
-                java.lang.Object ref = clientId_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    clientId_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientId(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder clearClientId() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                clientId_ = getDefaultInstance().getClientId();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientIdBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object filter_ = "";
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public boolean hasFilter() {
-                return ((bitField0_ & 0x00000004) == 0x00000004);
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public java.lang.String getFilter() {
-                java.lang.Object ref = filter_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        filter_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public com.google.protobuf.ByteString getFilterBytes() {
-                java.lang.Object ref = filter_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    filter_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder setFilter(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000004;
-                filter_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder clearFilter() {
-                bitField0_ = (bitField0_ & ~0x00000004);
-                filter_ = getDefaultInstance().getFilter();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder setFilterBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000004;
-                filter_ = value;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Sub)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        destination_ = "";
 
-        static {
-            defaultInstance = new Sub(true);
-            defaultInstance.initFields();
+        clientId_ = "";
+
+        filter_ = "";
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Sub getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.Sub.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Sub build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Sub result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Sub)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Sub buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Sub result = new com.alibaba.otter.canal.protocol.CanalPacket.Sub(this);
+        result.destination_ = destination_;
+        result.clientId_ = clientId_;
+        result.filter_ = filter_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Sub) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Sub)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Sub other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.Sub.getDefaultInstance()) return this;
+        if (!other.getDestination().isEmpty()) {
+          destination_ = other.destination_;
+          onChanged();
+        }
+        if (!other.getClientId().isEmpty()) {
+          clientId_ = other.clientId_;
+          onChanged();
+        }
+        if (!other.getFilter().isEmpty()) {
+          filter_ = other.filter_;
+          onChanged();
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.Sub parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Sub) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private java.lang.Object destination_ = "";
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public java.lang.String getDestination() {
+        java.lang.Object ref = destination_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          destination_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public com.google.protobuf.ByteString
+          getDestinationBytes() {
+        java.lang.Object ref = destination_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          destination_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestination(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder clearDestination() {
+        
+        destination_ = getDefaultInstance().getDestination();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestinationBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object clientId_ = "";
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public java.lang.String getClientId() {
+        java.lang.Object ref = clientId_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          clientId_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public com.google.protobuf.ByteString
+          getClientIdBytes() {
+        java.lang.Object ref = clientId_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          clientId_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientId(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder clearClientId() {
+        
+        clientId_ = getDefaultInstance().getClientId();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientIdBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object filter_ = "";
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public java.lang.String getFilter() {
+        java.lang.Object ref = filter_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          filter_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public com.google.protobuf.ByteString
+          getFilterBytes() {
+        java.lang.Object ref = filter_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          filter_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder setFilter(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        filter_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder clearFilter() {
+        
+        filter_ = getDefaultInstance().getFilter();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder setFilterBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        filter_ = value;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Sub)
     }
 
-    public interface UnsubOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Unsub)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        boolean hasDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        java.lang.String getDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        com.google.protobuf.ByteString getDestinationBytes();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        boolean hasClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        java.lang.String getClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        com.google.protobuf.ByteString getClientIdBytes();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        boolean hasFilter();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        java.lang.String getFilter();
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        com.google.protobuf.ByteString getFilterBytes();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Sub)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.Sub DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.Sub();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Sub getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Sub>
+        PARSER = new com.google.protobuf.AbstractParser<Sub>() {
+      @java.lang.Override
+      public Sub parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Sub(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Sub> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Sub> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.Sub getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface UnsubOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Unsub)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string destination = 1;</code>
+     */
+    java.lang.String getDestination();
+    /**
+     * <code>string destination = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getDestinationBytes();
+
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    java.lang.String getClientId();
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getClientIdBytes();
+
+    /**
+     * <code>string filter = 7;</code>
+     */
+    java.lang.String getFilter();
+    /**
+     * <code>string filter = 7;</code>
+     */
+    com.google.protobuf.ByteString
+        getFilterBytes();
+  }
+  /**
+   * <pre>
+   * Unsubscription
+   * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Unsub}
+   */
+  public  static final class Unsub extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Unsub)
+      UnsubOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use Unsub.newBuilder() to construct.
+    private Unsub(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private Unsub() {
+      destination_ = "";
+      clientId_ = "";
+      filter_ = "";
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Unsub(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              destination_ = s;
+              break;
+            }
+            case 18: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              clientId_ = s;
+              break;
+            }
+            case 58: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              filter_ = s;
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.Unsub.class, com.alibaba.otter.canal.protocol.CanalPacket.Unsub.Builder.class);
+    }
+
+    public static final int DESTINATION_FIELD_NUMBER = 1;
+    private volatile java.lang.Object destination_;
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public java.lang.String getDestination() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        destination_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDestinationBytes() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        destination_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int CLIENT_ID_FIELD_NUMBER = 2;
+    private volatile java.lang.Object clientId_;
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public java.lang.String getClientId() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        clientId_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getClientIdBytes() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        clientId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int FILTER_FIELD_NUMBER = 7;
+    private volatile java.lang.Object filter_;
+    /**
+     * <code>string filter = 7;</code>
+     */
+    public java.lang.String getFilter() {
+      java.lang.Object ref = filter_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        filter_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string filter = 7;</code>
+     */
+    public com.google.protobuf.ByteString
+        getFilterBytes() {
+      java.lang.Object ref = filter_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        filter_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!getDestinationBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, clientId_);
+      }
+      if (!getFilterBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 7, filter_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!getDestinationBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, clientId_);
+      }
+      if (!getFilterBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, filter_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.Unsub)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.Unsub other = (com.alibaba.otter.canal.protocol.CanalPacket.Unsub) obj;
+
+      boolean result = true;
+      result = result && getDestination()
+          .equals(other.getDestination());
+      result = result && getClientId()
+          .equals(other.getClientId());
+      result = result && getFilter()
+          .equals(other.getFilter());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + DESTINATION_FIELD_NUMBER;
+      hash = (53 * hash) + getDestination().hashCode();
+      hash = (37 * hash) + CLIENT_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getClientId().hashCode();
+      hash = (37 * hash) + FILTER_FIELD_NUMBER;
+      hash = (53 * hash) + getFilter().hashCode();
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Unsub prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Unsub}
-     *
      * <pre>
      * Unsubscription
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Unsub}
      */
-    public static final class Unsub extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Unsub)
-    UnsubOrBuilder {
-
-        // Use Unsub.newBuilder() to construct.
-        private Unsub(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private Unsub(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final Unsub defaultInstance;
-
-        public static Unsub getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public Unsub getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private Unsub(com.google.protobuf.CodedInputStream input,
-                      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                  throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 10: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000001;
-                            destination_ = bs;
-                            break;
-                        }
-                        case 18: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000002;
-                            clientId_ = bs;
-                            break;
-                        }
-                        case 58: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000004;
-                            filter_ = bs;
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Unsub.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.Unsub.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<Unsub> PARSER = new com.google.protobuf.AbstractParser<Unsub>() {
-
-                                                                   public Unsub parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                       return new Unsub(input, extensionRegistry);
-                                                                   }
-                                                               };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<Unsub> getParserForType() {
-            return PARSER;
-        }
-
-        private int              bitField0_;
-        public static final int  DESTINATION_FIELD_NUMBER = 1;
-        private java.lang.Object destination_;
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public boolean hasDestination() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public java.lang.String getDestination() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    destination_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public com.google.protobuf.ByteString getDestinationBytes() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                destination_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int  CLIENT_ID_FIELD_NUMBER = 2;
-        private java.lang.Object clientId_;
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public boolean hasClientId() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public java.lang.String getClientId() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    clientId_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public com.google.protobuf.ByteString getClientIdBytes() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                clientId_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int  FILTER_FIELD_NUMBER = 7;
-        private java.lang.Object filter_;
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public boolean hasFilter() {
-            return ((bitField0_ & 0x00000004) == 0x00000004);
-        }
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public java.lang.String getFilter() {
-            java.lang.Object ref = filter_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    filter_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string filter = 7;</code>
-         */
-        public com.google.protobuf.ByteString getFilterBytes() {
-            java.lang.Object ref = filter_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                filter_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        private void initFields() {
-            destination_ = "";
-            clientId_ = "";
-            filter_ = "";
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeBytes(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeBytes(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                output.writeBytes(7, getFilterBytes());
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(7, getFilterBytes());
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                       throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(com.google.protobuf.ByteString data,
-                                                                                   com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                               throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(byte[] data)
-                                                                                               throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(byte[] data,
-                                                                                   com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                               throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(java.io.InputStream input)
-                                                                                                             throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(java.io.InputStream input,
-                                                                                   com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                               throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                      throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseDelimitedFrom(java.io.InputStream input,
-                                                                                            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                        throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                              throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                   com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                               throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Unsub prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.Unsub}
-         *
-         * <pre>
-         * Unsubscription
-         * </pre>
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Unsub)
         com.alibaba.otter.canal.protocol.CanalPacket.UnsubOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.Unsub.class, com.alibaba.otter.canal.protocol.CanalPacket.Unsub.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Unsub.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.Unsub.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.Unsub.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.Unsub.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                destination_ = "";
-                bitField0_ = (bitField0_ & ~0x00000001);
-                clientId_ = "";
-                bitField0_ = (bitField0_ & ~0x00000002);
-                filter_ = "";
-                bitField0_ = (bitField0_ & ~0x00000004);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Unsub getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.Unsub.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Unsub build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Unsub result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Unsub buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Unsub result = new com.alibaba.otter.canal.protocol.CanalPacket.Unsub(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.destination_ = destination_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.clientId_ = clientId_;
-                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-                    to_bitField0_ |= 0x00000004;
-                }
-                result.filter_ = filter_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Unsub) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Unsub) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Unsub other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.Unsub.getDefaultInstance()) return this;
-                if (other.hasDestination()) {
-                    bitField0_ |= 0x00000001;
-                    destination_ = other.destination_;
-                    onChanged();
-                }
-                if (other.hasClientId()) {
-                    bitField0_ |= 0x00000002;
-                    clientId_ = other.clientId_;
-                    onChanged();
-                }
-                if (other.hasFilter()) {
-                    bitField0_ |= 0x00000004;
-                    filter_ = other.filter_;
-                    onChanged();
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.Unsub parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Unsub) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int              bitField0_;
-
-            private java.lang.Object destination_ = "";
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public boolean hasDestination() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public java.lang.String getDestination() {
-                java.lang.Object ref = destination_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        destination_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public com.google.protobuf.ByteString getDestinationBytes() {
-                java.lang.Object ref = destination_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    destination_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestination(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder clearDestination() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                destination_ = getDefaultInstance().getDestination();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestinationBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object clientId_ = "";
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public boolean hasClientId() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public java.lang.String getClientId() {
-                java.lang.Object ref = clientId_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        clientId_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public com.google.protobuf.ByteString getClientIdBytes() {
-                java.lang.Object ref = clientId_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    clientId_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientId(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder clearClientId() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                clientId_ = getDefaultInstance().getClientId();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientIdBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object filter_ = "";
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public boolean hasFilter() {
-                return ((bitField0_ & 0x00000004) == 0x00000004);
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public java.lang.String getFilter() {
-                java.lang.Object ref = filter_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        filter_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public com.google.protobuf.ByteString getFilterBytes() {
-                java.lang.Object ref = filter_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    filter_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder setFilter(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000004;
-                filter_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder clearFilter() {
-                bitField0_ = (bitField0_ & ~0x00000004);
-                filter_ = getDefaultInstance().getFilter();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string filter = 7;</code>
-             */
-            public Builder setFilterBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000004;
-                filter_ = value;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Unsub)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        destination_ = "";
 
-        static {
-            defaultInstance = new Unsub(true);
-            defaultInstance.initFields();
+        clientId_ = "";
+
+        filter_ = "";
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Unsub getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.Unsub.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Unsub build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Unsub result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Unsub)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Unsub buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Unsub result = new com.alibaba.otter.canal.protocol.CanalPacket.Unsub(this);
+        result.destination_ = destination_;
+        result.clientId_ = clientId_;
+        result.filter_ = filter_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Unsub) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Unsub)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Unsub other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.Unsub.getDefaultInstance()) return this;
+        if (!other.getDestination().isEmpty()) {
+          destination_ = other.destination_;
+          onChanged();
+        }
+        if (!other.getClientId().isEmpty()) {
+          clientId_ = other.clientId_;
+          onChanged();
+        }
+        if (!other.getFilter().isEmpty()) {
+          filter_ = other.filter_;
+          onChanged();
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.Unsub parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Unsub) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private java.lang.Object destination_ = "";
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public java.lang.String getDestination() {
+        java.lang.Object ref = destination_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          destination_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public com.google.protobuf.ByteString
+          getDestinationBytes() {
+        java.lang.Object ref = destination_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          destination_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestination(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder clearDestination() {
+        
+        destination_ = getDefaultInstance().getDestination();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestinationBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object clientId_ = "";
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public java.lang.String getClientId() {
+        java.lang.Object ref = clientId_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          clientId_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public com.google.protobuf.ByteString
+          getClientIdBytes() {
+        java.lang.Object ref = clientId_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          clientId_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientId(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder clearClientId() {
+        
+        clientId_ = getDefaultInstance().getClientId();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientIdBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object filter_ = "";
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public java.lang.String getFilter() {
+        java.lang.Object ref = filter_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          filter_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public com.google.protobuf.ByteString
+          getFilterBytes() {
+        java.lang.Object ref = filter_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          filter_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder setFilter(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        filter_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder clearFilter() {
+        
+        filter_ = getDefaultInstance().getFilter();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string filter = 7;</code>
+       */
+      public Builder setFilterBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        filter_ = value;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Unsub)
     }
 
-    public interface GetOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Get)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        boolean hasDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        java.lang.String getDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        com.google.protobuf.ByteString getDestinationBytes();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        boolean hasClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        java.lang.String getClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        com.google.protobuf.ByteString getClientIdBytes();
-
-        /**
-         * <code>optional int32 fetch_size = 3;</code>
-         */
-        boolean hasFetchSize();
-
-        /**
-         * <code>optional int32 fetch_size = 3;</code>
-         */
-        int getFetchSize();
-
-        /**
-         * <code>optional int64 timeout = 4 [default = -1];</code>
-         *
-         * <pre>
-         * 默认-1时代表不控制
-         * </pre>
-         */
-        boolean hasTimeout();
-
-        /**
-         * <code>optional int64 timeout = 4 [default = -1];</code>
-         *
-         * <pre>
-         * 默认-1时代表不控制
-         * </pre>
-         */
-        long getTimeout();
-
-        /**
-         * <code>optional int32 unit = 5 [default = 2];</code>
-         *
-         * <pre>
-         * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-         * </pre>
-         */
-        boolean hasUnit();
-
-        /**
-         * <code>optional int32 unit = 5 [default = 2];</code>
-         *
-         * <pre>
-         * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-         * </pre>
-         */
-        int getUnit();
-
-        /**
-         * <code>optional bool auto_ack = 6 [default = false];</code>
-         *
-         * <pre>
-         * 是否自动ack
-         * </pre>
-         */
-        boolean hasAutoAck();
-
-        /**
-         * <code>optional bool auto_ack = 6 [default = false];</code>
-         *
-         * <pre>
-         * 是否自动ack
-         * </pre>
-         */
-        boolean getAutoAck();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Unsub)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.Unsub DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.Unsub();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Unsub getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Unsub>
+        PARSER = new com.google.protobuf.AbstractParser<Unsub>() {
+      @java.lang.Override
+      public Unsub parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Unsub(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Unsub> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Unsub> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.Unsub getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface GetOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Get)
+      com.google.protobuf.MessageOrBuilder {
+
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Get}
-     *
-     * <pre>
-     * PullRequest
-     * </pre>
+     * <code>string destination = 1;</code>
      */
-    public static final class Get extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Get)
-    GetOrBuilder {
+    java.lang.String getDestination();
+    /**
+     * <code>string destination = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getDestinationBytes();
 
-        // Use Get.newBuilder() to construct.
-        private Get(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    java.lang.String getClientId();
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getClientIdBytes();
 
-        private Get(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
+    /**
+     * <code>int32 fetch_size = 3;</code>
+     */
+    int getFetchSize();
 
-        private static final Get defaultInstance;
+    /**
+     * <pre>
+     * 默认-1时代表不控制
+     * </pre>
+     *
+     * <code>int64 timeout = 4;</code>
+     */
+    long getTimeout();
 
-        public static Get getDefaultInstance() {
-            return defaultInstance;
-        }
+    /**
+     * <pre>
+     * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
+     * </pre>
+     *
+     * <code>int32 unit = 5;</code>
+     */
+    int getUnit();
 
-        public Get getDefaultInstanceForType() {
-            return defaultInstance;
-        }
+    /**
+     * <pre>
+     * 是否自动ack
+     * </pre>
+     *
+     * <code>bool auto_ack = 6;</code>
+     */
+    boolean getAutoAck();
 
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
+    public com.alibaba.otter.canal.protocol.CanalPacket.Get.TimeoutPresentCase getTimeoutPresentCase();
 
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
+    public com.alibaba.otter.canal.protocol.CanalPacket.Get.UnitPresentCase getUnitPresentCase();
 
-        private Get(com.google.protobuf.CodedInputStream input,
-                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 10: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000001;
-                            destination_ = bs;
-                            break;
-                        }
-                        case 18: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000002;
-                            clientId_ = bs;
-                            break;
-                        }
-                        case 24: {
-                            bitField0_ |= 0x00000004;
-                            fetchSize_ = input.readInt32();
-                            break;
-                        }
-                        case 32: {
-                            bitField0_ |= 0x00000008;
-                            timeout_ = input.readInt64();
-                            break;
-                        }
-                        case 40: {
-                            bitField0_ |= 0x00000010;
-                            unit_ = input.readInt32();
-                            break;
-                        }
-                        case 48: {
-                            bitField0_ |= 0x00000020;
-                            autoAck_ = input.readBool();
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
+    public com.alibaba.otter.canal.protocol.CanalPacket.Get.AutoAckPresentCase getAutoAckPresentCase();
+  }
+  /**
+   * <pre>
+   *  PullRequest
+   * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Get}
+   */
+  public  static final class Get extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Get)
+      GetOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use Get.newBuilder() to construct.
+    private Get(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private Get() {
+      destination_ = "";
+      clientId_ = "";
+      fetchSize_ = 0;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Get(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              destination_ = s;
+              break;
             }
-        }
+            case 18: {
+              java.lang.String s = input.readStringRequireUtf8();
 
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Get.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.Get.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<Get> PARSER = new com.google.protobuf.AbstractParser<Get>() {
-
-                                                                 public Get parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                             com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                         throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                     return new Get(input, extensionRegistry);
-                                                                 }
-                                                             };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<Get> getParserForType() {
-            return PARSER;
-        }
-
-        private int              bitField0_;
-        public static final int  DESTINATION_FIELD_NUMBER = 1;
-        private java.lang.Object destination_;
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public boolean hasDestination() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public java.lang.String getDestination() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    destination_ = s;
-                }
-                return s;
+              clientId_ = s;
+              break;
             }
-        }
+            case 24: {
 
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public com.google.protobuf.ByteString getDestinationBytes() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                destination_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
+              fetchSize_ = input.readInt32();
+              break;
             }
-        }
-
-        public static final int  CLIENT_ID_FIELD_NUMBER = 2;
-        private java.lang.Object clientId_;
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public boolean hasClientId() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public java.lang.String getClientId() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    clientId_ = s;
-                }
-                return s;
+            case 32: {
+              timeoutPresentCase_ = 4;
+              timeoutPresent_ = input.readInt64();
+              break;
             }
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public com.google.protobuf.ByteString getClientIdBytes() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                clientId_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
+            case 40: {
+              unitPresentCase_ = 5;
+              unitPresent_ = input.readInt32();
+              break;
             }
-        }
-
-        public static final int FETCH_SIZE_FIELD_NUMBER = 3;
-        private int             fetchSize_;
-
-        /**
-         * <code>optional int32 fetch_size = 3;</code>
-         */
-        public boolean hasFetchSize() {
-            return ((bitField0_ & 0x00000004) == 0x00000004);
-        }
-
-        /**
-         * <code>optional int32 fetch_size = 3;</code>
-         */
-        public int getFetchSize() {
-            return fetchSize_;
-        }
-
-        public static final int TIMEOUT_FIELD_NUMBER = 4;
-        private long            timeout_;
-
-        /**
-         * <code>optional int64 timeout = 4 [default = -1];</code>
-         *
-         * <pre>
-         * 默认-1时代表不控制
-         * </pre>
-         */
-        public boolean hasTimeout() {
-            return ((bitField0_ & 0x00000008) == 0x00000008);
-        }
-
-        /**
-         * <code>optional int64 timeout = 4 [default = -1];</code>
-         *
-         * <pre>
-         * 默认-1时代表不控制
-         * </pre>
-         */
-        public long getTimeout() {
-            return timeout_;
-        }
-
-        public static final int UNIT_FIELD_NUMBER = 5;
-        private int             unit_;
-
-        /**
-         * <code>optional int32 unit = 5 [default = 2];</code>
-         *
-         * <pre>
-         * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-         * </pre>
-         */
-        public boolean hasUnit() {
-            return ((bitField0_ & 0x00000010) == 0x00000010);
-        }
-
-        /**
-         * <code>optional int32 unit = 5 [default = 2];</code>
-         *
-         * <pre>
-         * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-         * </pre>
-         */
-        public int getUnit() {
-            return unit_;
-        }
-
-        public static final int AUTO_ACK_FIELD_NUMBER = 6;
-        private boolean         autoAck_;
-
-        /**
-         * <code>optional bool auto_ack = 6 [default = false];</code>
-         *
-         * <pre>
-         * 是否自动ack
-         * </pre>
-         */
-        public boolean hasAutoAck() {
-            return ((bitField0_ & 0x00000020) == 0x00000020);
-        }
-
-        /**
-         * <code>optional bool auto_ack = 6 [default = false];</code>
-         *
-         * <pre>
-         * 是否自动ack
-         * </pre>
-         */
-        public boolean getAutoAck() {
-            return autoAck_;
-        }
-
-        private void initFields() {
-            destination_ = "";
-            clientId_ = "";
-            fetchSize_ = 0;
-            timeout_ = -1L;
-            unit_ = 2;
-            autoAck_ = false;
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeBytes(1, getDestinationBytes());
+            case 48: {
+              autoAckPresentCase_ = 6;
+              autoAckPresent_ = input.readBool();
+              break;
             }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeBytes(2, getClientIdBytes());
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
             }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                output.writeInt32(3, fetchSize_);
-            }
-            if (((bitField0_ & 0x00000008) == 0x00000008)) {
-                output.writeInt64(4, timeout_);
-            }
-            if (((bitField0_ & 0x00000010) == 0x00000010)) {
-                output.writeInt32(5, unit_);
-            }
-            if (((bitField0_ & 0x00000020) == 0x00000020)) {
-                output.writeBool(6, autoAck_);
-            }
-            getUnknownFields().writeTo(output);
+          }
         }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_descriptor;
+    }
 
-        private int memoizedSerializedSize = -1;
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.Get.class, com.alibaba.otter.canal.protocol.CanalPacket.Get.Builder.class);
+    }
 
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
+    private int timeoutPresentCase_ = 0;
+    private java.lang.Object timeoutPresent_;
+    public enum TimeoutPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      TIMEOUT(4),
+      TIMEOUTPRESENT_NOT_SET(0);
+      private final int value;
+      private TimeoutPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static TimeoutPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
 
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt32Size(3, fetchSize_);
-            }
-            if (((bitField0_ & 0x00000008) == 0x00000008)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(4, timeout_);
-            }
-            if (((bitField0_ & 0x00000010) == 0x00000010)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt32Size(5, unit_);
-            }
-            if (((bitField0_ & 0x00000020) == 0x00000020)) {
-                size += com.google.protobuf.CodedOutputStream.computeBoolSize(6, autoAck_);
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
+      public static TimeoutPresentCase forNumber(int value) {
+        switch (value) {
+          case 4: return TIMEOUT;
+          case 0: return TIMEOUTPRESENT_NOT_SET;
+          default: return null;
         }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
 
-        private static final long serialVersionUID = 0L;
+    public TimeoutPresentCase
+    getTimeoutPresentCase() {
+      return TimeoutPresentCase.forNumber(
+          timeoutPresentCase_);
+    }
 
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
+    private int unitPresentCase_ = 0;
+    private java.lang.Object unitPresent_;
+    public enum UnitPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      UNIT(5),
+      UNITPRESENT_NOT_SET(0);
+      private final int value;
+      private UnitPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static UnitPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static UnitPresentCase forNumber(int value) {
+        switch (value) {
+          case 5: return UNIT;
+          case 0: return UNITPRESENT_NOT_SET;
+          default: return null;
         }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                     throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
+    public UnitPresentCase
+    getUnitPresentCase() {
+      return UnitPresentCase.forNumber(
+          unitPresentCase_);
+    }
+
+    private int autoAckPresentCase_ = 0;
+    private java.lang.Object autoAckPresent_;
+    public enum AutoAckPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      AUTO_ACK(6),
+      AUTOACKPRESENT_NOT_SET(0);
+      private final int value;
+      private AutoAckPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static AutoAckPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static AutoAckPresentCase forNumber(int value) {
+        switch (value) {
+          case 6: return AUTO_ACK;
+          case 0: return AUTOACKPRESENT_NOT_SET;
+          default: return null;
         }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(com.google.protobuf.ByteString data,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
+    public AutoAckPresentCase
+    getAutoAckPresentCase() {
+      return AutoAckPresentCase.forNumber(
+          autoAckPresentCase_);
+    }
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(byte[] data)
-                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
+    public static final int DESTINATION_FIELD_NUMBER = 1;
+    private volatile java.lang.Object destination_;
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public java.lang.String getDestination() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        destination_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDestinationBytes() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        destination_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(byte[] data,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
+    public static final int CLIENT_ID_FIELD_NUMBER = 2;
+    private volatile java.lang.Object clientId_;
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public java.lang.String getClientId() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        clientId_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getClientIdBytes() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        clientId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(java.io.InputStream input)
-                                                                                                           throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
+    public static final int FETCH_SIZE_FIELD_NUMBER = 3;
+    private int fetchSize_;
+    /**
+     * <code>int32 fetch_size = 3;</code>
+     */
+    public int getFetchSize() {
+      return fetchSize_;
+    }
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(java.io.InputStream input,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
+    public static final int TIMEOUT_FIELD_NUMBER = 4;
+    /**
+     * <pre>
+     * 默认-1时代表不控制
+     * </pre>
+     *
+     * <code>int64 timeout = 4;</code>
+     */
+    public long getTimeout() {
+      if (timeoutPresentCase_ == 4) {
+        return (java.lang.Long) timeoutPresent_;
+      }
+      return -1L;
+    }
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                    throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
+    public static final int UNIT_FIELD_NUMBER = 5;
+    /**
+     * <pre>
+     * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
+     * </pre>
+     *
+     * <code>int32 unit = 5;</code>
+     */
+    public int getUnit() {
+      if (unitPresentCase_ == 5) {
+        return (java.lang.Integer) unitPresent_;
+      }
+      return 2;
+    }
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseDelimitedFrom(java.io.InputStream input,
-                                                                                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                      throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
+    public static final int AUTO_ACK_FIELD_NUMBER = 6;
+    /**
+     * <pre>
+     * 是否自动ack
+     * </pre>
+     *
+     * <code>bool auto_ack = 6;</code>
+     */
+    public boolean getAutoAck() {
+      if (autoAckPresentCase_ == 6) {
+        return (java.lang.Boolean) autoAckPresent_;
+      }
+      return false;
+    }
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                            throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
 
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                 com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                             throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
+      memoizedIsInitialized = 1;
+      return true;
+    }
 
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!getDestinationBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, clientId_);
+      }
+      if (fetchSize_ != 0) {
+        output.writeInt32(3, fetchSize_);
+      }
+      if (timeoutPresentCase_ == 4) {
+        output.writeInt64(
+            4, (long)((java.lang.Long) timeoutPresent_));
+      }
+      if (unitPresentCase_ == 5) {
+        output.writeInt32(
+            5, (int)((java.lang.Integer) unitPresent_));
+      }
+      if (autoAckPresentCase_ == 6) {
+        output.writeBool(
+            6, (boolean)((java.lang.Boolean) autoAckPresent_));
+      }
+      unknownFields.writeTo(output);
+    }
 
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
 
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Get prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
+      size = 0;
+      if (!getDestinationBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, clientId_);
+      }
+      if (fetchSize_ != 0) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(3, fetchSize_);
+      }
+      if (timeoutPresentCase_ == 4) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(
+              4, (long)((java.lang.Long) timeoutPresent_));
+      }
+      if (unitPresentCase_ == 5) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(
+              5, (int)((java.lang.Integer) unitPresent_));
+      }
+      if (autoAckPresentCase_ == 6) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBoolSize(
+              6, (boolean)((java.lang.Boolean) autoAckPresent_));
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
 
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.Get)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.Get other = (com.alibaba.otter.canal.protocol.CanalPacket.Get) obj;
 
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
+      boolean result = true;
+      result = result && getDestination()
+          .equals(other.getDestination());
+      result = result && getClientId()
+          .equals(other.getClientId());
+      result = result && (getFetchSize()
+          == other.getFetchSize());
+      result = result && getTimeoutPresentCase().equals(
+          other.getTimeoutPresentCase());
+      if (!result) return false;
+      switch (timeoutPresentCase_) {
+        case 4:
+          result = result && (getTimeout()
+              == other.getTimeout());
+          break;
+        case 0:
+        default:
+      }
+      result = result && getUnitPresentCase().equals(
+          other.getUnitPresentCase());
+      if (!result) return false;
+      switch (unitPresentCase_) {
+        case 5:
+          result = result && (getUnit()
+              == other.getUnit());
+          break;
+        case 0:
+        default:
+      }
+      result = result && getAutoAckPresentCase().equals(
+          other.getAutoAckPresentCase());
+      if (!result) return false;
+      switch (autoAckPresentCase_) {
+        case 6:
+          result = result && (getAutoAck()
+              == other.getAutoAck());
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
 
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.Get}
-         *
-         * <pre>
-         * PullRequest
-         * </pre>
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + DESTINATION_FIELD_NUMBER;
+      hash = (53 * hash) + getDestination().hashCode();
+      hash = (37 * hash) + CLIENT_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getClientId().hashCode();
+      hash = (37 * hash) + FETCH_SIZE_FIELD_NUMBER;
+      hash = (53 * hash) + getFetchSize();
+      switch (timeoutPresentCase_) {
+        case 4:
+          hash = (37 * hash) + TIMEOUT_FIELD_NUMBER;
+          hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+              getTimeout());
+          break;
+        case 0:
+        default:
+      }
+      switch (unitPresentCase_) {
+        case 5:
+          hash = (37 * hash) + UNIT_FIELD_NUMBER;
+          hash = (53 * hash) + getUnit();
+          break;
+        case 0:
+        default:
+      }
+      switch (autoAckPresentCase_) {
+        case 6:
+          hash = (37 * hash) + AUTO_ACK_FIELD_NUMBER;
+          hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
+              getAutoAck());
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Get prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * <pre>
+     *  PullRequest
+     * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Get}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Get)
         com.alibaba.otter.canal.protocol.CanalPacket.GetOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.Get.class, com.alibaba.otter.canal.protocol.CanalPacket.Get.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Get.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.Get.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.Get.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.Get.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                destination_ = "";
-                bitField0_ = (bitField0_ & ~0x00000001);
-                clientId_ = "";
-                bitField0_ = (bitField0_ & ~0x00000002);
-                fetchSize_ = 0;
-                bitField0_ = (bitField0_ & ~0x00000004);
-                timeout_ = -1L;
-                bitField0_ = (bitField0_ & ~0x00000008);
-                unit_ = 2;
-                bitField0_ = (bitField0_ & ~0x00000010);
-                autoAck_ = false;
-                bitField0_ = (bitField0_ & ~0x00000020);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Get getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.Get.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Get build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Get result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Get buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Get result = new com.alibaba.otter.canal.protocol.CanalPacket.Get(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.destination_ = destination_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.clientId_ = clientId_;
-                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-                    to_bitField0_ |= 0x00000004;
-                }
-                result.fetchSize_ = fetchSize_;
-                if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-                    to_bitField0_ |= 0x00000008;
-                }
-                result.timeout_ = timeout_;
-                if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
-                    to_bitField0_ |= 0x00000010;
-                }
-                result.unit_ = unit_;
-                if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
-                    to_bitField0_ |= 0x00000020;
-                }
-                result.autoAck_ = autoAck_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Get) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Get) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Get other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.Get.getDefaultInstance()) return this;
-                if (other.hasDestination()) {
-                    bitField0_ |= 0x00000001;
-                    destination_ = other.destination_;
-                    onChanged();
-                }
-                if (other.hasClientId()) {
-                    bitField0_ |= 0x00000002;
-                    clientId_ = other.clientId_;
-                    onChanged();
-                }
-                if (other.hasFetchSize()) {
-                    setFetchSize(other.getFetchSize());
-                }
-                if (other.hasTimeout()) {
-                    setTimeout(other.getTimeout());
-                }
-                if (other.hasUnit()) {
-                    setUnit(other.getUnit());
-                }
-                if (other.hasAutoAck()) {
-                    setAutoAck(other.getAutoAck());
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.Get parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Get) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int              bitField0_;
-
-            private java.lang.Object destination_ = "";
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public boolean hasDestination() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public java.lang.String getDestination() {
-                java.lang.Object ref = destination_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        destination_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public com.google.protobuf.ByteString getDestinationBytes() {
-                java.lang.Object ref = destination_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    destination_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestination(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder clearDestination() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                destination_ = getDefaultInstance().getDestination();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestinationBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object clientId_ = "";
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public boolean hasClientId() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public java.lang.String getClientId() {
-                java.lang.Object ref = clientId_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        clientId_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public com.google.protobuf.ByteString getClientIdBytes() {
-                java.lang.Object ref = clientId_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    clientId_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientId(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder clearClientId() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                clientId_ = getDefaultInstance().getClientId();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientIdBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            private int fetchSize_;
-
-            /**
-             * <code>optional int32 fetch_size = 3;</code>
-             */
-            public boolean hasFetchSize() {
-                return ((bitField0_ & 0x00000004) == 0x00000004);
-            }
-
-            /**
-             * <code>optional int32 fetch_size = 3;</code>
-             */
-            public int getFetchSize() {
-                return fetchSize_;
-            }
-
-            /**
-             * <code>optional int32 fetch_size = 3;</code>
-             */
-            public Builder setFetchSize(int value) {
-                bitField0_ |= 0x00000004;
-                fetchSize_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int32 fetch_size = 3;</code>
-             */
-            public Builder clearFetchSize() {
-                bitField0_ = (bitField0_ & ~0x00000004);
-                fetchSize_ = 0;
-                onChanged();
-                return this;
-            }
-
-            private long timeout_ = -1L;
-
-            /**
-             * <code>optional int64 timeout = 4 [default = -1];</code>
-             *
-             * <pre>
-             * 默认-1时代表不控制
-             * </pre>
-             */
-            public boolean hasTimeout() {
-                return ((bitField0_ & 0x00000008) == 0x00000008);
-            }
-
-            /**
-             * <code>optional int64 timeout = 4 [default = -1];</code>
-             *
-             * <pre>
-             * 默认-1时代表不控制
-             * </pre>
-             */
-            public long getTimeout() {
-                return timeout_;
-            }
-
-            /**
-             * <code>optional int64 timeout = 4 [default = -1];</code>
-             *
-             * <pre>
-             * 默认-1时代表不控制
-             * </pre>
-             */
-            public Builder setTimeout(long value) {
-                bitField0_ |= 0x00000008;
-                timeout_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 timeout = 4 [default = -1];</code>
-             *
-             * <pre>
-             * 默认-1时代表不控制
-             * </pre>
-             */
-            public Builder clearTimeout() {
-                bitField0_ = (bitField0_ & ~0x00000008);
-                timeout_ = -1L;
-                onChanged();
-                return this;
-            }
-
-            private int unit_ = 2;
-
-            /**
-             * <code>optional int32 unit = 5 [default = 2];</code>
-             *
-             * <pre>
-             * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-             * </pre>
-             */
-            public boolean hasUnit() {
-                return ((bitField0_ & 0x00000010) == 0x00000010);
-            }
-
-            /**
-             * <code>optional int32 unit = 5 [default = 2];</code>
-             *
-             * <pre>
-             * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-             * </pre>
-             */
-            public int getUnit() {
-                return unit_;
-            }
-
-            /**
-             * <code>optional int32 unit = 5 [default = 2];</code>
-             *
-             * <pre>
-             * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-             * </pre>
-             */
-            public Builder setUnit(int value) {
-                bitField0_ |= 0x00000010;
-                unit_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int32 unit = 5 [default = 2];</code>
-             *
-             * <pre>
-             * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-             * </pre>
-             */
-            public Builder clearUnit() {
-                bitField0_ = (bitField0_ & ~0x00000010);
-                unit_ = 2;
-                onChanged();
-                return this;
-            }
-
-            private boolean autoAck_;
-
-            /**
-             * <code>optional bool auto_ack = 6 [default = false];</code>
-             *
-             * <pre>
-             * 是否自动ack
-             * </pre>
-             */
-            public boolean hasAutoAck() {
-                return ((bitField0_ & 0x00000020) == 0x00000020);
-            }
-
-            /**
-             * <code>optional bool auto_ack = 6 [default = false];</code>
-             *
-             * <pre>
-             * 是否自动ack
-             * </pre>
-             */
-            public boolean getAutoAck() {
-                return autoAck_;
-            }
-
-            /**
-             * <code>optional bool auto_ack = 6 [default = false];</code>
-             *
-             * <pre>
-             * 是否自动ack
-             * </pre>
-             */
-            public Builder setAutoAck(boolean value) {
-                bitField0_ |= 0x00000020;
-                autoAck_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional bool auto_ack = 6 [default = false];</code>
-             *
-             * <pre>
-             * 是否自动ack
-             * </pre>
-             */
-            public Builder clearAutoAck() {
-                bitField0_ = (bitField0_ & ~0x00000020);
-                autoAck_ = false;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Get)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        destination_ = "";
 
-        static {
-            defaultInstance = new Get(true);
-            defaultInstance.initFields();
+        clientId_ = "";
+
+        fetchSize_ = 0;
+
+        timeoutPresentCase_ = 0;
+        timeoutPresent_ = null;
+        unitPresentCase_ = 0;
+        unitPresent_ = null;
+        autoAckPresentCase_ = 0;
+        autoAckPresent_ = null;
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Get_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Get getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.Get.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Get build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Get result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Get)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Get buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Get result = new com.alibaba.otter.canal.protocol.CanalPacket.Get(this);
+        result.destination_ = destination_;
+        result.clientId_ = clientId_;
+        result.fetchSize_ = fetchSize_;
+        if (timeoutPresentCase_ == 4) {
+          result.timeoutPresent_ = timeoutPresent_;
+        }
+        if (unitPresentCase_ == 5) {
+          result.unitPresent_ = unitPresent_;
+        }
+        if (autoAckPresentCase_ == 6) {
+          result.autoAckPresent_ = autoAckPresent_;
+        }
+        result.timeoutPresentCase_ = timeoutPresentCase_;
+        result.unitPresentCase_ = unitPresentCase_;
+        result.autoAckPresentCase_ = autoAckPresentCase_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Get) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Get)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Get other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.Get.getDefaultInstance()) return this;
+        if (!other.getDestination().isEmpty()) {
+          destination_ = other.destination_;
+          onChanged();
+        }
+        if (!other.getClientId().isEmpty()) {
+          clientId_ = other.clientId_;
+          onChanged();
+        }
+        if (other.getFetchSize() != 0) {
+          setFetchSize(other.getFetchSize());
+        }
+        switch (other.getTimeoutPresentCase()) {
+          case TIMEOUT: {
+            setTimeout(other.getTimeout());
+            break;
+          }
+          case TIMEOUTPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        switch (other.getUnitPresentCase()) {
+          case UNIT: {
+            setUnit(other.getUnit());
+            break;
+          }
+          case UNITPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        switch (other.getAutoAckPresentCase()) {
+          case AUTO_ACK: {
+            setAutoAck(other.getAutoAck());
+            break;
+          }
+          case AUTOACKPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.Get parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Get) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int timeoutPresentCase_ = 0;
+      private java.lang.Object timeoutPresent_;
+      public TimeoutPresentCase
+          getTimeoutPresentCase() {
+        return TimeoutPresentCase.forNumber(
+            timeoutPresentCase_);
+      }
+
+      public Builder clearTimeoutPresent() {
+        timeoutPresentCase_ = 0;
+        timeoutPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+      private int unitPresentCase_ = 0;
+      private java.lang.Object unitPresent_;
+      public UnitPresentCase
+          getUnitPresentCase() {
+        return UnitPresentCase.forNumber(
+            unitPresentCase_);
+      }
+
+      public Builder clearUnitPresent() {
+        unitPresentCase_ = 0;
+        unitPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+      private int autoAckPresentCase_ = 0;
+      private java.lang.Object autoAckPresent_;
+      public AutoAckPresentCase
+          getAutoAckPresentCase() {
+        return AutoAckPresentCase.forNumber(
+            autoAckPresentCase_);
+      }
+
+      public Builder clearAutoAckPresent() {
+        autoAckPresentCase_ = 0;
+        autoAckPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+
+      private java.lang.Object destination_ = "";
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public java.lang.String getDestination() {
+        java.lang.Object ref = destination_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          destination_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public com.google.protobuf.ByteString
+          getDestinationBytes() {
+        java.lang.Object ref = destination_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          destination_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestination(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder clearDestination() {
+        
+        destination_ = getDefaultInstance().getDestination();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestinationBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object clientId_ = "";
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public java.lang.String getClientId() {
+        java.lang.Object ref = clientId_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          clientId_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public com.google.protobuf.ByteString
+          getClientIdBytes() {
+        java.lang.Object ref = clientId_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          clientId_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientId(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder clearClientId() {
+        
+        clientId_ = getDefaultInstance().getClientId();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientIdBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+
+      private int fetchSize_ ;
+      /**
+       * <code>int32 fetch_size = 3;</code>
+       */
+      public int getFetchSize() {
+        return fetchSize_;
+      }
+      /**
+       * <code>int32 fetch_size = 3;</code>
+       */
+      public Builder setFetchSize(int value) {
+        
+        fetchSize_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int32 fetch_size = 3;</code>
+       */
+      public Builder clearFetchSize() {
+        
+        fetchSize_ = 0;
+        onChanged();
+        return this;
+      }
+
+      /**
+       * <pre>
+       * 默认-1时代表不控制
+       * </pre>
+       *
+       * <code>int64 timeout = 4;</code>
+       */
+      public long getTimeout() {
+        if (timeoutPresentCase_ == 4) {
+          return (java.lang.Long) timeoutPresent_;
+        }
+        return 0L;
+      }
+      /**
+       * <pre>
+       * 默认-1时代表不控制
+       * </pre>
+       *
+       * <code>int64 timeout = 4;</code>
+       */
+      public Builder setTimeout(long value) {
+        timeoutPresentCase_ = 4;
+        timeoutPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * 默认-1时代表不控制
+       * </pre>
+       *
+       * <code>int64 timeout = 4;</code>
+       */
+      public Builder clearTimeout() {
+        if (timeoutPresentCase_ == 4) {
+          timeoutPresentCase_ = 0;
+          timeoutPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+
+      /**
+       * <pre>
+       * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
+       * </pre>
+       *
+       * <code>int32 unit = 5;</code>
+       */
+      public int getUnit() {
+        if (unitPresentCase_ == 5) {
+          return (java.lang.Integer) unitPresent_;
+        }
+        return 0;
+      }
+      /**
+       * <pre>
+       * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
+       * </pre>
+       *
+       * <code>int32 unit = 5;</code>
+       */
+      public Builder setUnit(int value) {
+        unitPresentCase_ = 5;
+        unitPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
+       * </pre>
+       *
+       * <code>int32 unit = 5;</code>
+       */
+      public Builder clearUnit() {
+        if (unitPresentCase_ == 5) {
+          unitPresentCase_ = 0;
+          unitPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+
+      /**
+       * <pre>
+       * 是否自动ack
+       * </pre>
+       *
+       * <code>bool auto_ack = 6;</code>
+       */
+      public boolean getAutoAck() {
+        if (autoAckPresentCase_ == 6) {
+          return (java.lang.Boolean) autoAckPresent_;
+        }
+        return false;
+      }
+      /**
+       * <pre>
+       * 是否自动ack
+       * </pre>
+       *
+       * <code>bool auto_ack = 6;</code>
+       */
+      public Builder setAutoAck(boolean value) {
+        autoAckPresentCase_ = 6;
+        autoAckPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * 是否自动ack
+       * </pre>
+       *
+       * <code>bool auto_ack = 6;</code>
+       */
+      public Builder clearAutoAck() {
+        if (autoAckPresentCase_ == 6) {
+          autoAckPresentCase_ = 0;
+          autoAckPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Get)
     }
 
-    public interface MessagesOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Messages)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional int64 batch_id = 1;</code>
-         */
-        boolean hasBatchId();
-
-        /**
-         * <code>optional int64 batch_id = 1;</code>
-         */
-        long getBatchId();
-
-        /**
-         * <code>repeated bytes messages = 2;</code>
-         */
-        java.util.List<com.google.protobuf.ByteString> getMessagesList();
-
-        /**
-         * <code>repeated bytes messages = 2;</code>
-         */
-        int getMessagesCount();
-
-        /**
-         * <code>repeated bytes messages = 2;</code>
-         */
-        com.google.protobuf.ByteString getMessages(int index);
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Get)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.Get DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.Get();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Get getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Get>
+        PARSER = new com.google.protobuf.AbstractParser<Get>() {
+      @java.lang.Override
+      public Get parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Get(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Get> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Get> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.Get getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface MessagesOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Messages)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>int64 batch_id = 1;</code>
+     */
+    long getBatchId();
+
+    /**
+     * <code>repeated bytes messages = 2;</code>
+     */
+    java.util.List<com.google.protobuf.ByteString> getMessagesList();
+    /**
+     * <code>repeated bytes messages = 2;</code>
+     */
+    int getMessagesCount();
+    /**
+     * <code>repeated bytes messages = 2;</code>
+     */
+    com.google.protobuf.ByteString getMessages(int index);
+  }
+  /**
+   * <pre>
+   * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Messages}
+   */
+  public  static final class Messages extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Messages)
+      MessagesOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use Messages.newBuilder() to construct.
+    private Messages(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private Messages() {
+      batchId_ = 0L;
+      messages_ = java.util.Collections.emptyList();
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Messages(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 8: {
+
+              batchId_ = input.readInt64();
+              break;
+            }
+            case 18: {
+              if (!((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
+                messages_ = new java.util.ArrayList<com.google.protobuf.ByteString>();
+                mutable_bitField0_ |= 0x00000002;
+              }
+              messages_.add(input.readBytes());
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        if (((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
+          messages_ = java.util.Collections.unmodifiableList(messages_);
+        }
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.Messages.class, com.alibaba.otter.canal.protocol.CanalPacket.Messages.Builder.class);
+    }
+
+    private int bitField0_;
+    public static final int BATCH_ID_FIELD_NUMBER = 1;
+    private long batchId_;
+    /**
+     * <code>int64 batch_id = 1;</code>
+     */
+    public long getBatchId() {
+      return batchId_;
+    }
+
+    public static final int MESSAGES_FIELD_NUMBER = 2;
+    private java.util.List<com.google.protobuf.ByteString> messages_;
+    /**
+     * <code>repeated bytes messages = 2;</code>
+     */
+    public java.util.List<com.google.protobuf.ByteString>
+        getMessagesList() {
+      return messages_;
+    }
+    /**
+     * <code>repeated bytes messages = 2;</code>
+     */
+    public int getMessagesCount() {
+      return messages_.size();
+    }
+    /**
+     * <code>repeated bytes messages = 2;</code>
+     */
+    public com.google.protobuf.ByteString getMessages(int index) {
+      return messages_.get(index);
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (batchId_ != 0L) {
+        output.writeInt64(1, batchId_);
+      }
+      for (int i = 0; i < messages_.size(); i++) {
+        output.writeBytes(2, messages_.get(i));
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (batchId_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(1, batchId_);
+      }
+      {
+        int dataSize = 0;
+        for (int i = 0; i < messages_.size(); i++) {
+          dataSize += com.google.protobuf.CodedOutputStream
+            .computeBytesSizeNoTag(messages_.get(i));
+        }
+        size += dataSize;
+        size += 1 * getMessagesList().size();
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.Messages)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.Messages other = (com.alibaba.otter.canal.protocol.CanalPacket.Messages) obj;
+
+      boolean result = true;
+      result = result && (getBatchId()
+          == other.getBatchId());
+      result = result && getMessagesList()
+          .equals(other.getMessagesList());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + BATCH_ID_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getBatchId());
+      if (getMessagesCount() > 0) {
+        hash = (37 * hash) + MESSAGES_FIELD_NUMBER;
+        hash = (53 * hash) + getMessagesList().hashCode();
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Messages prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Messages}
-     *
      * <pre>
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Messages}
      */
-    public static final class Messages extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Messages)
-    MessagesOrBuilder {
-
-        // Use Messages.newBuilder() to construct.
-        private Messages(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private Messages(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final Messages defaultInstance;
-
-        public static Messages getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public Messages getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private Messages(com.google.protobuf.CodedInputStream input,
-                         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                     throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 8: {
-                            bitField0_ |= 0x00000001;
-                            batchId_ = input.readInt64();
-                            break;
-                        }
-                        case 18: {
-                            if (!((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-                                messages_ = new java.util.ArrayList<com.google.protobuf.ByteString>();
-                                mutable_bitField0_ |= 0x00000002;
-                            }
-                            messages_.add(input.readBytes());
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                if (((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-                    messages_ = java.util.Collections.unmodifiableList(messages_);
-                }
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Messages.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.Messages.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<Messages> PARSER = new com.google.protobuf.AbstractParser<Messages>() {
-
-                                                                      public Messages parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                                       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                                   throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                          return new Messages(input, extensionRegistry);
-                                                                      }
-                                                                  };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<Messages> getParserForType() {
-            return PARSER;
-        }
-
-        private int             bitField0_;
-        public static final int BATCH_ID_FIELD_NUMBER = 1;
-        private long            batchId_;
-
-        /**
-         * <code>optional int64 batch_id = 1;</code>
-         */
-        public boolean hasBatchId() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional int64 batch_id = 1;</code>
-         */
-        public long getBatchId() {
-            return batchId_;
-        }
-
-        public static final int                                MESSAGES_FIELD_NUMBER = 2;
-        private java.util.List<com.google.protobuf.ByteString> messages_;
-
-        /**
-         * <code>repeated bytes messages = 2;</code>
-         */
-        public java.util.List<com.google.protobuf.ByteString> getMessagesList() {
-            return messages_;
-        }
-
-        /**
-         * <code>repeated bytes messages = 2;</code>
-         */
-        public int getMessagesCount() {
-            return messages_.size();
-        }
-
-        /**
-         * <code>repeated bytes messages = 2;</code>
-         */
-        public com.google.protobuf.ByteString getMessages(int index) {
-            return messages_.get(index);
-        }
-
-        private void initFields() {
-            batchId_ = 0L;
-            messages_ = java.util.Collections.emptyList();
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeInt64(1, batchId_);
-            }
-            for (int i = 0; i < messages_.size(); i++) {
-                output.writeBytes(2, messages_.get(i));
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(1, batchId_);
-            }
-            {
-                int dataSize = 0;
-                for (int i = 0; i < messages_.size(); i++) {
-                    dataSize += com.google.protobuf.CodedOutputStream.computeBytesSizeNoTag(messages_.get(i));
-                }
-                size += dataSize;
-                size += 1 * getMessagesList().size();
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                          throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(com.google.protobuf.ByteString data,
-                                                                                      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                  throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(byte[] data)
-                                                                                                  throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(byte[] data,
-                                                                                      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                  throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(java.io.InputStream input)
-                                                                                                                throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(java.io.InputStream input,
-                                                                                      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                  throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                         throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseDelimitedFrom(java.io.InputStream input,
-                                                                                               com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                           throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                                 throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Messages parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                  throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Messages prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.Messages}
-         *
-         * <pre>
-         * </pre>
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Messages)
         com.alibaba.otter.canal.protocol.CanalPacket.MessagesOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.Messages.class, com.alibaba.otter.canal.protocol.CanalPacket.Messages.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Messages.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.Messages.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.Messages.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.Messages.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                batchId_ = 0L;
-                bitField0_ = (bitField0_ & ~0x00000001);
-                messages_ = java.util.Collections.emptyList();
-                bitField0_ = (bitField0_ & ~0x00000002);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Messages getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.Messages.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Messages build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Messages result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Messages buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Messages result = new com.alibaba.otter.canal.protocol.CanalPacket.Messages(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.batchId_ = batchId_;
-                if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                    messages_ = java.util.Collections.unmodifiableList(messages_);
-                    bitField0_ = (bitField0_ & ~0x00000002);
-                }
-                result.messages_ = messages_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Messages) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Messages) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Messages other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.Messages.getDefaultInstance()) return this;
-                if (other.hasBatchId()) {
-                    setBatchId(other.getBatchId());
-                }
-                if (!other.messages_.isEmpty()) {
-                    if (messages_.isEmpty()) {
-                        messages_ = other.messages_;
-                        bitField0_ = (bitField0_ & ~0x00000002);
-                    } else {
-                        ensureMessagesIsMutable();
-                        messages_.addAll(other.messages_);
-                    }
-                    onChanged();
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.Messages parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Messages) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int  bitField0_;
-
-            private long batchId_;
-
-            /**
-             * <code>optional int64 batch_id = 1;</code>
-             */
-            public boolean hasBatchId() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional int64 batch_id = 1;</code>
-             */
-            public long getBatchId() {
-                return batchId_;
-            }
-
-            /**
-             * <code>optional int64 batch_id = 1;</code>
-             */
-            public Builder setBatchId(long value) {
-                bitField0_ |= 0x00000001;
-                batchId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 batch_id = 1;</code>
-             */
-            public Builder clearBatchId() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                batchId_ = 0L;
-                onChanged();
-                return this;
-            }
-
-            private java.util.List<com.google.protobuf.ByteString> messages_ = java.util.Collections.emptyList();
-
-            private void ensureMessagesIsMutable() {
-                if (!((bitField0_ & 0x00000002) == 0x00000002)) {
-                    messages_ = new java.util.ArrayList<com.google.protobuf.ByteString>(messages_);
-                    bitField0_ |= 0x00000002;
-                }
-            }
-
-            /**
-             * <code>repeated bytes messages = 2;</code>
-             */
-            public java.util.List<com.google.protobuf.ByteString> getMessagesList() {
-                return java.util.Collections.unmodifiableList(messages_);
-            }
-
-            /**
-             * <code>repeated bytes messages = 2;</code>
-             */
-            public int getMessagesCount() {
-                return messages_.size();
-            }
-
-            /**
-             * <code>repeated bytes messages = 2;</code>
-             */
-            public com.google.protobuf.ByteString getMessages(int index) {
-                return messages_.get(index);
-            }
-
-            /**
-             * <code>repeated bytes messages = 2;</code>
-             */
-            public Builder setMessages(int index, com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                ensureMessagesIsMutable();
-                messages_.set(index, value);
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>repeated bytes messages = 2;</code>
-             */
-            public Builder addMessages(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                ensureMessagesIsMutable();
-                messages_.add(value);
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>repeated bytes messages = 2;</code>
-             */
-            public Builder addAllMessages(java.lang.Iterable<? extends com.google.protobuf.ByteString> values) {
-                ensureMessagesIsMutable();
-                com.google.protobuf.AbstractMessageLite.Builder.addAll(values, messages_);
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>repeated bytes messages = 2;</code>
-             */
-            public Builder clearMessages() {
-                messages_ = java.util.Collections.emptyList();
-                bitField0_ = (bitField0_ & ~0x00000002);
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Messages)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        batchId_ = 0L;
 
-        static {
-            defaultInstance = new Messages(true);
-            defaultInstance.initFields();
+        messages_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Messages getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.Messages.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Messages build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Messages result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Messages)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Messages buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Messages result = new com.alibaba.otter.canal.protocol.CanalPacket.Messages(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        result.batchId_ = batchId_;
+        if (((bitField0_ & 0x00000002) == 0x00000002)) {
+          messages_ = java.util.Collections.unmodifiableList(messages_);
+          bitField0_ = (bitField0_ & ~0x00000002);
+        }
+        result.messages_ = messages_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Messages) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Messages)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Messages other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.Messages.getDefaultInstance()) return this;
+        if (other.getBatchId() != 0L) {
+          setBatchId(other.getBatchId());
+        }
+        if (!other.messages_.isEmpty()) {
+          if (messages_.isEmpty()) {
+            messages_ = other.messages_;
+            bitField0_ = (bitField0_ & ~0x00000002);
+          } else {
+            ensureMessagesIsMutable();
+            messages_.addAll(other.messages_);
+          }
+          onChanged();
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.Messages parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Messages) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private long batchId_ ;
+      /**
+       * <code>int64 batch_id = 1;</code>
+       */
+      public long getBatchId() {
+        return batchId_;
+      }
+      /**
+       * <code>int64 batch_id = 1;</code>
+       */
+      public Builder setBatchId(long value) {
+        
+        batchId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 batch_id = 1;</code>
+       */
+      public Builder clearBatchId() {
+        
+        batchId_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      private java.util.List<com.google.protobuf.ByteString> messages_ = java.util.Collections.emptyList();
+      private void ensureMessagesIsMutable() {
+        if (!((bitField0_ & 0x00000002) == 0x00000002)) {
+          messages_ = new java.util.ArrayList<com.google.protobuf.ByteString>(messages_);
+          bitField0_ |= 0x00000002;
+         }
+      }
+      /**
+       * <code>repeated bytes messages = 2;</code>
+       */
+      public java.util.List<com.google.protobuf.ByteString>
+          getMessagesList() {
+        return java.util.Collections.unmodifiableList(messages_);
+      }
+      /**
+       * <code>repeated bytes messages = 2;</code>
+       */
+      public int getMessagesCount() {
+        return messages_.size();
+      }
+      /**
+       * <code>repeated bytes messages = 2;</code>
+       */
+      public com.google.protobuf.ByteString getMessages(int index) {
+        return messages_.get(index);
+      }
+      /**
+       * <code>repeated bytes messages = 2;</code>
+       */
+      public Builder setMessages(
+          int index, com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  ensureMessagesIsMutable();
+        messages_.set(index, value);
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>repeated bytes messages = 2;</code>
+       */
+      public Builder addMessages(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  ensureMessagesIsMutable();
+        messages_.add(value);
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>repeated bytes messages = 2;</code>
+       */
+      public Builder addAllMessages(
+          java.lang.Iterable<? extends com.google.protobuf.ByteString> values) {
+        ensureMessagesIsMutable();
+        com.google.protobuf.AbstractMessageLite.Builder.addAll(
+            values, messages_);
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>repeated bytes messages = 2;</code>
+       */
+      public Builder clearMessages() {
+        messages_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000002);
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Messages)
     }
 
-    public interface DumpOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Dump)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional string journal = 1;</code>
-         */
-        boolean hasJournal();
-
-        /**
-         * <code>optional string journal = 1;</code>
-         */
-        java.lang.String getJournal();
-
-        /**
-         * <code>optional string journal = 1;</code>
-         */
-        com.google.protobuf.ByteString getJournalBytes();
-
-        /**
-         * <code>optional int64 position = 2;</code>
-         */
-        boolean hasPosition();
-
-        /**
-         * <code>optional int64 position = 2;</code>
-         */
-        long getPosition();
-
-        /**
-         * <code>optional int64 timestamp = 3 [default = 0];</code>
-         */
-        boolean hasTimestamp();
-
-        /**
-         * <code>optional int64 timestamp = 3 [default = 0];</code>
-         */
-        long getTimestamp();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Messages)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.Messages DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.Messages();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Messages getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Messages>
+        PARSER = new com.google.protobuf.AbstractParser<Messages>() {
+      @java.lang.Override
+      public Messages parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Messages(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Messages> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Messages> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.Messages getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface DumpOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.Dump)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string journal = 1;</code>
+     */
+    java.lang.String getJournal();
+    /**
+     * <code>string journal = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getJournalBytes();
+
+    /**
+     * <code>int64 position = 2;</code>
+     */
+    long getPosition();
+
+    /**
+     * <code>int64 timestamp = 3;</code>
+     */
+    long getTimestamp();
+
+    public com.alibaba.otter.canal.protocol.CanalPacket.Dump.TimestampPresentCase getTimestampPresentCase();
+  }
+  /**
+   * <pre>
+   * TBD when new packets are required
+   * </pre>
+   *
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.Dump}
+   */
+  public  static final class Dump extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Dump)
+      DumpOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use Dump.newBuilder() to construct.
+    private Dump(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private Dump() {
+      journal_ = "";
+      position_ = 0L;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Dump(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              journal_ = s;
+              break;
+            }
+            case 16: {
+
+              position_ = input.readInt64();
+              break;
+            }
+            case 24: {
+              timestampPresentCase_ = 3;
+              timestampPresent_ = input.readInt64();
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.Dump.class, com.alibaba.otter.canal.protocol.CanalPacket.Dump.Builder.class);
+    }
+
+    private int timestampPresentCase_ = 0;
+    private java.lang.Object timestampPresent_;
+    public enum TimestampPresentCase
+        implements com.google.protobuf.Internal.EnumLite {
+      TIMESTAMP(3),
+      TIMESTAMPPRESENT_NOT_SET(0);
+      private final int value;
+      private TimestampPresentCase(int value) {
+        this.value = value;
+      }
+      /**
+       * @deprecated Use {@link #forNumber(int)} instead.
+       */
+      @java.lang.Deprecated
+      public static TimestampPresentCase valueOf(int value) {
+        return forNumber(value);
+      }
+
+      public static TimestampPresentCase forNumber(int value) {
+        switch (value) {
+          case 3: return TIMESTAMP;
+          case 0: return TIMESTAMPPRESENT_NOT_SET;
+          default: return null;
+        }
+      }
+      public int getNumber() {
+        return this.value;
+      }
+    };
+
+    public TimestampPresentCase
+    getTimestampPresentCase() {
+      return TimestampPresentCase.forNumber(
+          timestampPresentCase_);
+    }
+
+    public static final int JOURNAL_FIELD_NUMBER = 1;
+    private volatile java.lang.Object journal_;
+    /**
+     * <code>string journal = 1;</code>
+     */
+    public java.lang.String getJournal() {
+      java.lang.Object ref = journal_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        journal_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string journal = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getJournalBytes() {
+      java.lang.Object ref = journal_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        journal_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int POSITION_FIELD_NUMBER = 2;
+    private long position_;
+    /**
+     * <code>int64 position = 2;</code>
+     */
+    public long getPosition() {
+      return position_;
+    }
+
+    public static final int TIMESTAMP_FIELD_NUMBER = 3;
+    /**
+     * <code>int64 timestamp = 3;</code>
+     */
+    public long getTimestamp() {
+      if (timestampPresentCase_ == 3) {
+        return (java.lang.Long) timestampPresent_;
+      }
+      return 0L;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!getJournalBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, journal_);
+      }
+      if (position_ != 0L) {
+        output.writeInt64(2, position_);
+      }
+      if (timestampPresentCase_ == 3) {
+        output.writeInt64(
+            3, (long)((java.lang.Long) timestampPresent_));
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!getJournalBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, journal_);
+      }
+      if (position_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(2, position_);
+      }
+      if (timestampPresentCase_ == 3) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(
+              3, (long)((java.lang.Long) timestampPresent_));
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.Dump)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.Dump other = (com.alibaba.otter.canal.protocol.CanalPacket.Dump) obj;
+
+      boolean result = true;
+      result = result && getJournal()
+          .equals(other.getJournal());
+      result = result && (getPosition()
+          == other.getPosition());
+      result = result && getTimestampPresentCase().equals(
+          other.getTimestampPresentCase());
+      if (!result) return false;
+      switch (timestampPresentCase_) {
+        case 3:
+          result = result && (getTimestamp()
+              == other.getTimestamp());
+          break;
+        case 0:
+        default:
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + JOURNAL_FIELD_NUMBER;
+      hash = (53 * hash) + getJournal().hashCode();
+      hash = (37 * hash) + POSITION_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getPosition());
+      switch (timestampPresentCase_) {
+        case 3:
+          hash = (37 * hash) + TIMESTAMP_FIELD_NUMBER;
+          hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+              getTimestamp());
+          break;
+        case 0:
+        default:
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Dump prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
-     * Protobuf type {@code com.alibaba.otter.canal.protocol.Dump}
-     *
      * <pre>
      * TBD when new packets are required
      * </pre>
+     *
+     * Protobuf type {@code com.alibaba.otter.canal.protocol.Dump}
      */
-    public static final class Dump extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.Dump)
-    DumpOrBuilder {
-
-        // Use Dump.newBuilder() to construct.
-        private Dump(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private Dump(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final Dump defaultInstance;
-
-        public static Dump getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public Dump getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private Dump(com.google.protobuf.CodedInputStream input,
-                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                 throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 10: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000001;
-                            journal_ = bs;
-                            break;
-                        }
-                        case 16: {
-                            bitField0_ |= 0x00000002;
-                            position_ = input.readInt64();
-                            break;
-                        }
-                        case 24: {
-                            bitField0_ |= 0x00000004;
-                            timestamp_ = input.readInt64();
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Dump.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.Dump.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<Dump> PARSER = new com.google.protobuf.AbstractParser<Dump>() {
-
-                                                                  public Dump parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                               com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                           throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                      return new Dump(input, extensionRegistry);
-                                                                  }
-                                                              };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<Dump> getParserForType() {
-            return PARSER;
-        }
-
-        private int              bitField0_;
-        public static final int  JOURNAL_FIELD_NUMBER = 1;
-        private java.lang.Object journal_;
-
-        /**
-         * <code>optional string journal = 1;</code>
-         */
-        public boolean hasJournal() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional string journal = 1;</code>
-         */
-        public java.lang.String getJournal() {
-            java.lang.Object ref = journal_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    journal_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string journal = 1;</code>
-         */
-        public com.google.protobuf.ByteString getJournalBytes() {
-            java.lang.Object ref = journal_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                journal_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int POSITION_FIELD_NUMBER = 2;
-        private long            position_;
-
-        /**
-         * <code>optional int64 position = 2;</code>
-         */
-        public boolean hasPosition() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional int64 position = 2;</code>
-         */
-        public long getPosition() {
-            return position_;
-        }
-
-        public static final int TIMESTAMP_FIELD_NUMBER = 3;
-        private long            timestamp_;
-
-        /**
-         * <code>optional int64 timestamp = 3 [default = 0];</code>
-         */
-        public boolean hasTimestamp() {
-            return ((bitField0_ & 0x00000004) == 0x00000004);
-        }
-
-        /**
-         * <code>optional int64 timestamp = 3 [default = 0];</code>
-         */
-        public long getTimestamp() {
-            return timestamp_;
-        }
-
-        private void initFields() {
-            journal_ = "";
-            position_ = 0L;
-            timestamp_ = 0L;
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeBytes(1, getJournalBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeInt64(2, position_);
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                output.writeInt64(3, timestamp_);
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(1, getJournalBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(2, position_);
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(3, timestamp_);
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                      throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(com.google.protobuf.ByteString data,
-                                                                                  com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                              throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(byte[] data)
-                                                                                              throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(byte[] data,
-                                                                                  com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                              throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(java.io.InputStream input)
-                                                                                                            throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(java.io.InputStream input,
-                                                                                  com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                              throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                     throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseDelimitedFrom(java.io.InputStream input,
-                                                                                           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                       throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                             throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.Dump parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                  com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                              throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.Dump prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.Dump}
-         *
-         * <pre>
-         * TBD when new packets are required
-         * </pre>
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.Dump)
         com.alibaba.otter.canal.protocol.CanalPacket.DumpOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.Dump.class, com.alibaba.otter.canal.protocol.CanalPacket.Dump.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.Dump.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.Dump.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.Dump.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.Dump.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                journal_ = "";
-                bitField0_ = (bitField0_ & ~0x00000001);
-                position_ = 0L;
-                bitField0_ = (bitField0_ & ~0x00000002);
-                timestamp_ = 0L;
-                bitField0_ = (bitField0_ & ~0x00000004);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Dump getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.Dump.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Dump build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Dump result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.Dump buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.Dump result = new com.alibaba.otter.canal.protocol.CanalPacket.Dump(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.journal_ = journal_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.position_ = position_;
-                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-                    to_bitField0_ |= 0x00000004;
-                }
-                result.timestamp_ = timestamp_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Dump) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Dump) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Dump other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.Dump.getDefaultInstance()) return this;
-                if (other.hasJournal()) {
-                    bitField0_ |= 0x00000001;
-                    journal_ = other.journal_;
-                    onChanged();
-                }
-                if (other.hasPosition()) {
-                    setPosition(other.getPosition());
-                }
-                if (other.hasTimestamp()) {
-                    setTimestamp(other.getTimestamp());
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.Dump parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Dump) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int              bitField0_;
-
-            private java.lang.Object journal_ = "";
-
-            /**
-             * <code>optional string journal = 1;</code>
-             */
-            public boolean hasJournal() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional string journal = 1;</code>
-             */
-            public java.lang.String getJournal() {
-                java.lang.Object ref = journal_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        journal_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string journal = 1;</code>
-             */
-            public com.google.protobuf.ByteString getJournalBytes() {
-                java.lang.Object ref = journal_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    journal_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string journal = 1;</code>
-             */
-            public Builder setJournal(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                journal_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string journal = 1;</code>
-             */
-            public Builder clearJournal() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                journal_ = getDefaultInstance().getJournal();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string journal = 1;</code>
-             */
-            public Builder setJournalBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                journal_ = value;
-                onChanged();
-                return this;
-            }
-
-            private long position_;
-
-            /**
-             * <code>optional int64 position = 2;</code>
-             */
-            public boolean hasPosition() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional int64 position = 2;</code>
-             */
-            public long getPosition() {
-                return position_;
-            }
-
-            /**
-             * <code>optional int64 position = 2;</code>
-             */
-            public Builder setPosition(long value) {
-                bitField0_ |= 0x00000002;
-                position_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 position = 2;</code>
-             */
-            public Builder clearPosition() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                position_ = 0L;
-                onChanged();
-                return this;
-            }
-
-            private long timestamp_;
-
-            /**
-             * <code>optional int64 timestamp = 3 [default = 0];</code>
-             */
-            public boolean hasTimestamp() {
-                return ((bitField0_ & 0x00000004) == 0x00000004);
-            }
-
-            /**
-             * <code>optional int64 timestamp = 3 [default = 0];</code>
-             */
-            public long getTimestamp() {
-                return timestamp_;
-            }
-
-            /**
-             * <code>optional int64 timestamp = 3 [default = 0];</code>
-             */
-            public Builder setTimestamp(long value) {
-                bitField0_ |= 0x00000004;
-                timestamp_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 timestamp = 3 [default = 0];</code>
-             */
-            public Builder clearTimestamp() {
-                bitField0_ = (bitField0_ & ~0x00000004);
-                timestamp_ = 0L;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Dump)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        journal_ = "";
 
-        static {
-            defaultInstance = new Dump(true);
-            defaultInstance.initFields();
+        position_ = 0L;
+
+        timestampPresentCase_ = 0;
+        timestampPresent_ = null;
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Dump getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.Dump.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Dump build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Dump result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Dump)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.Dump buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.Dump result = new com.alibaba.otter.canal.protocol.CanalPacket.Dump(this);
+        result.journal_ = journal_;
+        result.position_ = position_;
+        if (timestampPresentCase_ == 3) {
+          result.timestampPresent_ = timestampPresent_;
+        }
+        result.timestampPresentCase_ = timestampPresentCase_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.Dump) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.Dump)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.Dump other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.Dump.getDefaultInstance()) return this;
+        if (!other.getJournal().isEmpty()) {
+          journal_ = other.journal_;
+          onChanged();
+        }
+        if (other.getPosition() != 0L) {
+          setPosition(other.getPosition());
+        }
+        switch (other.getTimestampPresentCase()) {
+          case TIMESTAMP: {
+            setTimestamp(other.getTimestamp());
+            break;
+          }
+          case TIMESTAMPPRESENT_NOT_SET: {
+            break;
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.Dump parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.Dump) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int timestampPresentCase_ = 0;
+      private java.lang.Object timestampPresent_;
+      public TimestampPresentCase
+          getTimestampPresentCase() {
+        return TimestampPresentCase.forNumber(
+            timestampPresentCase_);
+      }
+
+      public Builder clearTimestampPresent() {
+        timestampPresentCase_ = 0;
+        timestampPresent_ = null;
+        onChanged();
+        return this;
+      }
+
+
+      private java.lang.Object journal_ = "";
+      /**
+       * <code>string journal = 1;</code>
+       */
+      public java.lang.String getJournal() {
+        java.lang.Object ref = journal_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          journal_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string journal = 1;</code>
+       */
+      public com.google.protobuf.ByteString
+          getJournalBytes() {
+        java.lang.Object ref = journal_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          journal_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string journal = 1;</code>
+       */
+      public Builder setJournal(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        journal_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string journal = 1;</code>
+       */
+      public Builder clearJournal() {
+        
+        journal_ = getDefaultInstance().getJournal();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string journal = 1;</code>
+       */
+      public Builder setJournalBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        journal_ = value;
+        onChanged();
+        return this;
+      }
+
+      private long position_ ;
+      /**
+       * <code>int64 position = 2;</code>
+       */
+      public long getPosition() {
+        return position_;
+      }
+      /**
+       * <code>int64 position = 2;</code>
+       */
+      public Builder setPosition(long value) {
+        
+        position_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 position = 2;</code>
+       */
+      public Builder clearPosition() {
+        
+        position_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      /**
+       * <code>int64 timestamp = 3;</code>
+       */
+      public long getTimestamp() {
+        if (timestampPresentCase_ == 3) {
+          return (java.lang.Long) timestampPresent_;
+        }
+        return 0L;
+      }
+      /**
+       * <code>int64 timestamp = 3;</code>
+       */
+      public Builder setTimestamp(long value) {
+        timestampPresentCase_ = 3;
+        timestampPresent_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 timestamp = 3;</code>
+       */
+      public Builder clearTimestamp() {
+        if (timestampPresentCase_ == 3) {
+          timestampPresentCase_ = 0;
+          timestampPresent_ = null;
+          onChanged();
+        }
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.Dump)
     }
 
-    public interface ClientRollbackOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.ClientRollback)
-    com.google.protobuf.MessageOrBuilder {
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        boolean hasDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        java.lang.String getDestination();
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        com.google.protobuf.ByteString getDestinationBytes();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        boolean hasClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        java.lang.String getClientId();
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        com.google.protobuf.ByteString getClientIdBytes();
-
-        /**
-         * <code>optional int64 batch_id = 3;</code>
-         */
-        boolean hasBatchId();
-
-        /**
-         * <code>optional int64 batch_id = 3;</code>
-         */
-        long getBatchId();
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.Dump)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.Dump DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.Dump();
     }
 
+    public static com.alibaba.otter.canal.protocol.CanalPacket.Dump getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<Dump>
+        PARSER = new com.google.protobuf.AbstractParser<Dump>() {
+      @java.lang.Override
+      public Dump parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Dump(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<Dump> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Dump> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.Dump getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface ClientRollbackOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:com.alibaba.otter.canal.protocol.ClientRollback)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string destination = 1;</code>
+     */
+    java.lang.String getDestination();
+    /**
+     * <code>string destination = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getDestinationBytes();
+
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    java.lang.String getClientId();
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getClientIdBytes();
+
+    /**
+     * <code>int64 batch_id = 3;</code>
+     */
+    long getBatchId();
+  }
+  /**
+   * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientRollback}
+   */
+  public  static final class ClientRollback extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.ClientRollback)
+      ClientRollbackOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use ClientRollback.newBuilder() to construct.
+    private ClientRollback(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private ClientRollback() {
+      destination_ = "";
+      clientId_ = "";
+      batchId_ = 0L;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private ClientRollback(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              destination_ = s;
+              break;
+            }
+            case 18: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              clientId_ = s;
+              break;
+            }
+            case 24: {
+
+              batchId_ = input.readInt64();
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.class, com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.Builder.class);
+    }
+
+    public static final int DESTINATION_FIELD_NUMBER = 1;
+    private volatile java.lang.Object destination_;
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public java.lang.String getDestination() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        destination_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string destination = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDestinationBytes() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        destination_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int CLIENT_ID_FIELD_NUMBER = 2;
+    private volatile java.lang.Object clientId_;
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public java.lang.String getClientId() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        clientId_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string client_id = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getClientIdBytes() {
+      java.lang.Object ref = clientId_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        clientId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int BATCH_ID_FIELD_NUMBER = 3;
+    private long batchId_;
+    /**
+     * <code>int64 batch_id = 3;</code>
+     */
+    public long getBatchId() {
+      return batchId_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!getDestinationBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, clientId_);
+      }
+      if (batchId_ != 0L) {
+        output.writeInt64(3, batchId_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!getDestinationBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, destination_);
+      }
+      if (!getClientIdBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, clientId_);
+      }
+      if (batchId_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(3, batchId_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback)) {
+        return super.equals(obj);
+      }
+      com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback other = (com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback) obj;
+
+      boolean result = true;
+      result = result && getDestination()
+          .equals(other.getDestination());
+      result = result && getClientId()
+          .equals(other.getClientId());
+      result = result && (getBatchId()
+          == other.getBatchId());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + DESTINATION_FIELD_NUMBER;
+      hash = (53 * hash) + getDestination().hashCode();
+      hash = (37 * hash) + CLIENT_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getClientId().hashCode();
+      hash = (37 * hash) + BATCH_ID_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getBatchId());
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
     /**
      * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientRollback}
      */
-    public static final class ClientRollback extends com.google.protobuf.GeneratedMessage implements
-    // @@protoc_insertion_point(message_implements:com.alibaba.otter.canal.protocol.ClientRollback)
-    ClientRollbackOrBuilder {
-
-        // Use ClientRollback.newBuilder() to construct.
-        private ClientRollback(com.google.protobuf.GeneratedMessage.Builder<?> builder){
-            super(builder);
-            this.unknownFields = builder.getUnknownFields();
-        }
-
-        private ClientRollback(boolean noInit){
-            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-        }
-
-        private static final ClientRollback defaultInstance;
-
-        public static ClientRollback getDefaultInstance() {
-            return defaultInstance;
-        }
-
-        public ClientRollback getDefaultInstanceForType() {
-            return defaultInstance;
-        }
-
-        private final com.google.protobuf.UnknownFieldSet unknownFields;
-
-        @java.lang.Override
-        public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
-            return this.unknownFields;
-        }
-
-        private ClientRollback(com.google.protobuf.CodedInputStream input,
-                               com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                           throws com.google.protobuf.InvalidProtocolBufferException{
-            initFields();
-            int mutable_bitField0_ = 0;
-            com.google.protobuf.UnknownFieldSet.Builder unknownFields = com.google.protobuf.UnknownFieldSet.newBuilder();
-            try {
-                boolean done = false;
-                while (!done) {
-                    int tag = input.readTag();
-                    switch (tag) {
-                        case 0:
-                            done = true;
-                            break;
-                        default: {
-                            if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
-                                done = true;
-                            }
-                            break;
-                        }
-                        case 10: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000001;
-                            destination_ = bs;
-                            break;
-                        }
-                        case 18: {
-                            com.google.protobuf.ByteString bs = input.readBytes();
-                            bitField0_ |= 0x00000002;
-                            clientId_ = bs;
-                            break;
-                        }
-                        case 24: {
-                            bitField0_ |= 0x00000004;
-                            batchId_ = input.readInt64();
-                            break;
-                        }
-                    }
-                }
-            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                throw e.setUnfinishedMessage(this);
-            } catch (java.io.IOException e) {
-                throw new com.google.protobuf.InvalidProtocolBufferException(e.getMessage()).setUnfinishedMessage(this);
-            } finally {
-                this.unknownFields = unknownFields.build();
-                makeExtensionsImmutable();
-            }
-        }
-
-        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor;
-        }
-
-        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-            return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.class,
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.Builder.class);
-        }
-
-        public static com.google.protobuf.Parser<ClientRollback> PARSER = new com.google.protobuf.AbstractParser<ClientRollback>() {
-
-                                                                            public ClientRollback parsePartialFrom(com.google.protobuf.CodedInputStream input,
-                                                                                                                   com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                                               throws com.google.protobuf.InvalidProtocolBufferException {
-                                                                                return new ClientRollback(input,
-                                                                                    extensionRegistry);
-                                                                            }
-                                                                        };
-
-        @java.lang.Override
-        public com.google.protobuf.Parser<ClientRollback> getParserForType() {
-            return PARSER;
-        }
-
-        private int              bitField0_;
-        public static final int  DESTINATION_FIELD_NUMBER = 1;
-        private java.lang.Object destination_;
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public boolean hasDestination() {
-            return ((bitField0_ & 0x00000001) == 0x00000001);
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public java.lang.String getDestination() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    destination_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string destination = 1;</code>
-         */
-        public com.google.protobuf.ByteString getDestinationBytes() {
-            java.lang.Object ref = destination_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                destination_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int  CLIENT_ID_FIELD_NUMBER = 2;
-        private java.lang.Object clientId_;
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public boolean hasClientId() {
-            return ((bitField0_ & 0x00000002) == 0x00000002);
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public java.lang.String getClientId() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                return (java.lang.String) ref;
-            } else {
-                com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                java.lang.String s = bs.toStringUtf8();
-                if (bs.isValidUtf8()) {
-                    clientId_ = s;
-                }
-                return s;
-            }
-        }
-
-        /**
-         * <code>optional string client_id = 2;</code>
-         */
-        public com.google.protobuf.ByteString getClientIdBytes() {
-            java.lang.Object ref = clientId_;
-            if (ref instanceof java.lang.String) {
-                com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                clientId_ = b;
-                return b;
-            } else {
-                return (com.google.protobuf.ByteString) ref;
-            }
-        }
-
-        public static final int BATCH_ID_FIELD_NUMBER = 3;
-        private long            batchId_;
-
-        /**
-         * <code>optional int64 batch_id = 3;</code>
-         */
-        public boolean hasBatchId() {
-            return ((bitField0_ & 0x00000004) == 0x00000004);
-        }
-
-        /**
-         * <code>optional int64 batch_id = 3;</code>
-         */
-        public long getBatchId() {
-            return batchId_;
-        }
-
-        private void initFields() {
-            destination_ = "";
-            clientId_ = "";
-            batchId_ = 0L;
-        }
-
-        private byte memoizedIsInitialized = -1;
-
-        public final boolean isInitialized() {
-            byte isInitialized = memoizedIsInitialized;
-            if (isInitialized == 1) return true;
-            if (isInitialized == 0) return false;
-
-            memoizedIsInitialized = 1;
-            return true;
-        }
-
-        public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-            getSerializedSize();
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                output.writeBytes(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                output.writeBytes(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                output.writeInt64(3, batchId_);
-            }
-            getUnknownFields().writeTo(output);
-        }
-
-        private int memoizedSerializedSize = -1;
-
-        public int getSerializedSize() {
-            int size = memoizedSerializedSize;
-            if (size != -1) return size;
-
-            size = 0;
-            if (((bitField0_ & 0x00000001) == 0x00000001)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(1, getDestinationBytes());
-            }
-            if (((bitField0_ & 0x00000002) == 0x00000002)) {
-                size += com.google.protobuf.CodedOutputStream.computeBytesSize(2, getClientIdBytes());
-            }
-            if (((bitField0_ & 0x00000004) == 0x00000004)) {
-                size += com.google.protobuf.CodedOutputStream.computeInt64Size(3, batchId_);
-            }
-            size += getUnknownFields().getSerializedSize();
-            memoizedSerializedSize = size;
-            return size;
-        }
-
-        private static final long serialVersionUID = 0L;
-
-        @java.lang.Override
-        protected java.lang.Object writeReplace() throws java.io.ObjectStreamException {
-            return super.writeReplace();
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(com.google.protobuf.ByteString data)
-                                                                                                                                throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(com.google.protobuf.ByteString data,
-                                                                                            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                        throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(byte[] data)
-                                                                                                        throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(byte[] data,
-                                                                                            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                        throws com.google.protobuf.InvalidProtocolBufferException {
-            return PARSER.parseFrom(data, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(java.io.InputStream input)
-                                                                                                                      throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(java.io.InputStream input,
-                                                                                            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                        throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseDelimitedFrom(java.io.InputStream input)
-                                                                                                                               throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseDelimitedFrom(java.io.InputStream input,
-                                                                                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                                 throws java.io.IOException {
-            return PARSER.parseDelimitedFrom(input, extensionRegistry);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(com.google.protobuf.CodedInputStream input)
-                                                                                                                                       throws java.io.IOException {
-            return PARSER.parseFrom(input);
-        }
-
-        public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parseFrom(com.google.protobuf.CodedInputStream input,
-                                                                                            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                                                                        throws java.io.IOException {
-            return PARSER.parseFrom(input, extensionRegistry);
-        }
-
-        public static Builder newBuilder() {
-            return Builder.create();
-        }
-
-        public Builder newBuilderForType() {
-            return newBuilder();
-        }
-
-        public static Builder newBuilder(com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback prototype) {
-            return newBuilder().mergeFrom(prototype);
-        }
-
-        public Builder toBuilder() {
-            return newBuilder(this);
-        }
-
-        @java.lang.Override
-        protected Builder newBuilderForType(com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-            Builder builder = new Builder(parent);
-            return builder;
-        }
-
-        /**
-         * Protobuf type {@code com.alibaba.otter.canal.protocol.ClientRollback}
-         */
-        public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:com.alibaba.otter.canal.protocol.ClientRollback)
         com.alibaba.otter.canal.protocol.CanalPacket.ClientRollbackOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor;
+      }
 
-            public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor;
-            }
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.class, com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.Builder.class);
+      }
 
-            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_fieldAccessorTable.ensureFieldAccessorsInitialized(com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.class,
-                    com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.Builder.class);
-            }
+      // Construct using com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
 
-            // Construct using
-            // com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.newBuilder()
-            private Builder(){
-                maybeForceBuilderInitialization();
-            }
-
-            private Builder(com.google.protobuf.GeneratedMessage.BuilderParent parent){
-                super(parent);
-                maybeForceBuilderInitialization();
-            }
-
-            private void maybeForceBuilderInitialization() {
-                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
-                }
-            }
-
-            private static Builder create() {
-                return new Builder();
-            }
-
-            public Builder clear() {
-                super.clear();
-                destination_ = "";
-                bitField0_ = (bitField0_ & ~0x00000001);
-                clientId_ = "";
-                bitField0_ = (bitField0_ & ~0x00000002);
-                batchId_ = 0L;
-                bitField0_ = (bitField0_ & ~0x00000004);
-                return this;
-            }
-
-            public Builder clone() {
-                return create().mergeFrom(buildPartial());
-            }
-
-            public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback getDefaultInstanceForType() {
-                return com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.getDefaultInstance();
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback build() {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback result = buildPartial();
-                if (!result.isInitialized()) {
-                    throw newUninitializedMessageException(result);
-                }
-                return result;
-            }
-
-            public com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback buildPartial() {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback result = new com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback(this);
-                int from_bitField0_ = bitField0_;
-                int to_bitField0_ = 0;
-                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-                    to_bitField0_ |= 0x00000001;
-                }
-                result.destination_ = destination_;
-                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-                    to_bitField0_ |= 0x00000002;
-                }
-                result.clientId_ = clientId_;
-                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-                    to_bitField0_ |= 0x00000004;
-                }
-                result.batchId_ = batchId_;
-                result.bitField0_ = to_bitField0_;
-                onBuilt();
-                return result;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.Message other) {
-                if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback) {
-                    return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback) other);
-                } else {
-                    super.mergeFrom(other);
-                    return this;
-                }
-            }
-
-            public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback other) {
-                if (other == com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.getDefaultInstance()) return this;
-                if (other.hasDestination()) {
-                    bitField0_ |= 0x00000001;
-                    destination_ = other.destination_;
-                    onChanged();
-                }
-                if (other.hasClientId()) {
-                    bitField0_ |= 0x00000002;
-                    clientId_ = other.clientId_;
-                    onChanged();
-                }
-                if (other.hasBatchId()) {
-                    setBatchId(other.getBatchId());
-                }
-                this.mergeUnknownFields(other.getUnknownFields());
-                return this;
-            }
-
-            public final boolean isInitialized() {
-                return true;
-            }
-
-            public Builder mergeFrom(com.google.protobuf.CodedInputStream input,
-                                     com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-                                                                                                 throws java.io.IOException {
-                com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parsedMessage = null;
-                try {
-                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-                    parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback) e.getUnfinishedMessage();
-                    throw e;
-                } finally {
-                    if (parsedMessage != null) {
-                        mergeFrom(parsedMessage);
-                    }
-                }
-                return this;
-            }
-
-            private int              bitField0_;
-
-            private java.lang.Object destination_ = "";
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public boolean hasDestination() {
-                return ((bitField0_ & 0x00000001) == 0x00000001);
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public java.lang.String getDestination() {
-                java.lang.Object ref = destination_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        destination_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public com.google.protobuf.ByteString getDestinationBytes() {
-                java.lang.Object ref = destination_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    destination_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestination(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder clearDestination() {
-                bitField0_ = (bitField0_ & ~0x00000001);
-                destination_ = getDefaultInstance().getDestination();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string destination = 1;</code>
-             */
-            public Builder setDestinationBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000001;
-                destination_ = value;
-                onChanged();
-                return this;
-            }
-
-            private java.lang.Object clientId_ = "";
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public boolean hasClientId() {
-                return ((bitField0_ & 0x00000002) == 0x00000002);
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public java.lang.String getClientId() {
-                java.lang.Object ref = clientId_;
-                if (!(ref instanceof java.lang.String)) {
-                    com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-                    java.lang.String s = bs.toStringUtf8();
-                    if (bs.isValidUtf8()) {
-                        clientId_ = s;
-                    }
-                    return s;
-                } else {
-                    return (java.lang.String) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public com.google.protobuf.ByteString getClientIdBytes() {
-                java.lang.Object ref = clientId_;
-                if (ref instanceof String) {
-                    com.google.protobuf.ByteString b = com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-                    clientId_ = b;
-                    return b;
-                } else {
-                    return (com.google.protobuf.ByteString) ref;
-                }
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientId(java.lang.String value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder clearClientId() {
-                bitField0_ = (bitField0_ & ~0x00000002);
-                clientId_ = getDefaultInstance().getClientId();
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional string client_id = 2;</code>
-             */
-            public Builder setClientIdBytes(com.google.protobuf.ByteString value) {
-                if (value == null) {
-                    throw new NullPointerException();
-                }
-                bitField0_ |= 0x00000002;
-                clientId_ = value;
-                onChanged();
-                return this;
-            }
-
-            private long batchId_;
-
-            /**
-             * <code>optional int64 batch_id = 3;</code>
-             */
-            public boolean hasBatchId() {
-                return ((bitField0_ & 0x00000004) == 0x00000004);
-            }
-
-            /**
-             * <code>optional int64 batch_id = 3;</code>
-             */
-            public long getBatchId() {
-                return batchId_;
-            }
-
-            /**
-             * <code>optional int64 batch_id = 3;</code>
-             */
-            public Builder setBatchId(long value) {
-                bitField0_ |= 0x00000004;
-                batchId_ = value;
-                onChanged();
-                return this;
-            }
-
-            /**
-             * <code>optional int64 batch_id = 3;</code>
-             */
-            public Builder clearBatchId() {
-                bitField0_ = (bitField0_ & ~0x00000004);
-                batchId_ = 0L;
-                onChanged();
-                return this;
-            }
-
-            // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.ClientRollback)
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
         }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        destination_ = "";
 
-        static {
-            defaultInstance = new ClientRollback(true);
-            defaultInstance.initFields();
+        clientId_ = "";
+
+        batchId_ = 0L;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor;
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback getDefaultInstanceForType() {
+        return com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback build() {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
         }
+        return result;
+      }
 
-        // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.ClientRollback)
+      @java.lang.Override
+      public com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback buildPartial() {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback result = new com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback(this);
+        result.destination_ = destination_;
+        result.clientId_ = clientId_;
+        result.batchId_ = batchId_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback) {
+          return mergeFrom((com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback other) {
+        if (other == com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback.getDefaultInstance()) return this;
+        if (!other.getDestination().isEmpty()) {
+          destination_ = other.destination_;
+          onChanged();
+        }
+        if (!other.getClientId().isEmpty()) {
+          clientId_ = other.clientId_;
+          onChanged();
+        }
+        if (other.getBatchId() != 0L) {
+          setBatchId(other.getBatchId());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private java.lang.Object destination_ = "";
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public java.lang.String getDestination() {
+        java.lang.Object ref = destination_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          destination_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public com.google.protobuf.ByteString
+          getDestinationBytes() {
+        java.lang.Object ref = destination_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          destination_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestination(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder clearDestination() {
+        
+        destination_ = getDefaultInstance().getDestination();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string destination = 1;</code>
+       */
+      public Builder setDestinationBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        destination_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object clientId_ = "";
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public java.lang.String getClientId() {
+        java.lang.Object ref = clientId_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          clientId_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public com.google.protobuf.ByteString
+          getClientIdBytes() {
+        java.lang.Object ref = clientId_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          clientId_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientId(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder clearClientId() {
+        
+        clientId_ = getDefaultInstance().getClientId();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string client_id = 2;</code>
+       */
+      public Builder setClientIdBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        clientId_ = value;
+        onChanged();
+        return this;
+      }
+
+      private long batchId_ ;
+      /**
+       * <code>int64 batch_id = 3;</code>
+       */
+      public long getBatchId() {
+        return batchId_;
+      }
+      /**
+       * <code>int64 batch_id = 3;</code>
+       */
+      public Builder setBatchId(long value) {
+        
+        batchId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 batch_id = 3;</code>
+       */
+      public Builder clearBatchId() {
+        
+        batchId_ = 0L;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:com.alibaba.otter.canal.protocol.ClientRollback)
     }
 
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_Packet_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_HeartBeat_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_Handshake_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_ClientAuth_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_Ack_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_ClientAck_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_Sub_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_Unsub_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_Get_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_Get_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_Messages_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_Dump_fieldAccessorTable;
-    private static final com.google.protobuf.Descriptors.Descriptor        internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor;
-    private static com.google.protobuf.GeneratedMessage.FieldAccessorTable internal_static_com_alibaba_otter_canal_protocol_ClientRollback_fieldAccessorTable;
-
-    public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
-        return descriptor;
-    }
-
-    private static com.google.protobuf.Descriptors.FileDescriptor descriptor;
+    // @@protoc_insertion_point(class_scope:com.alibaba.otter.canal.protocol.ClientRollback)
+    private static final com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback DEFAULT_INSTANCE;
     static {
-        java.lang.String[] descriptorData = {
-            "\n\023CanalProtocol.proto\022 com.alibaba.otter"
-                    + ".canal.protocol\"\312\001\n\006Packet\022\030\n\014magic_numb"
-                    + "er\030\001 \001(\005:\00217\022\022\n\007version\030\002 \001(\005:\0011\022:\n\004type"
-                    + "\030\003 \001(\0162,.com.alibaba.otter.canal.protoco"
-                    + "l.PacketType\022H\n\013compression\030\004 \001(\0162-.com."
-                    + "alibaba.otter.canal.protocol.Compression"
-                    + ":\004NONE\022\014\n\004body\030\005 \001(\014\"<\n\tHeartBeat\022\026\n\016sen"
-                    + "d_timestamp\030\001 \001(\003\022\027\n\017start_timestamp\030\002 \001"
-                    + "(\003\"\217\001\n\tHandshake\022$\n\026communication_encodi"
-                    + "ng\030\001 \001(\t:\004utf8\022\r\n\005seeds\030\002 \001(\014\022M\n\026support",
-            "ed_compressions\030\003 \003(\0162-.com.alibaba.otte"
-                    + "r.canal.protocol.Compression\"\274\001\n\nClientA"
-                    + "uth\022\020\n\010username\030\001 \001(\t\022\020\n\010password\030\002 \001(\014\022"
-                    + "\033\n\020net_read_timeout\030\003 \001(\005:\0010\022\034\n\021net_writ"
-                    + "e_timeout\030\004 \001(\005:\0010\022\023\n\013destination\030\005 \001(\t\022"
-                    + "\021\n\tclient_id\030\006 \001(\t\022\016\n\006filter\030\007 \001(\t\022\027\n\017st"
-                    + "art_timestamp\030\010 \001(\003\"3\n\003Ack\022\025\n\nerror_code"
-                    + "\030\001 \001(\005:\0010\022\025\n\rerror_message\030\002 \001(\t\"E\n\tClie"
-                    + "ntAck\022\023\n\013destination\030\001 \001(\t\022\021\n\tclient_id\030"
-                    + "\002 \001(\t\022\020\n\010batch_id\030\003 \001(\003\"=\n\003Sub\022\023\n\013destin",
-            "ation\030\001 \001(\t\022\021\n\tclient_id\030\002 \001(\t\022\016\n\006filter"
-                    + "\030\007 \001(\t\"?\n\005Unsub\022\023\n\013destination\030\001 \001(\t\022\021\n\t"
-                    + "client_id\030\002 \001(\t\022\016\n\006filter\030\007 \001(\t\"\200\001\n\003Get\022"
-                    + "\023\n\013destination\030\001 \001(\t\022\021\n\tclient_id\030\002 \001(\t\022"
-                    + "\022\n\nfetch_size\030\003 \001(\005\022\023\n\007timeout\030\004 \001(\003:\002-1"
-                    + "\022\017\n\004unit\030\005 \001(\005:\0012\022\027\n\010auto_ack\030\006 \001(\010:\005fal"
-                    + "se\".\n\010Messages\022\020\n\010batch_id\030\001 \001(\003\022\020\n\010mess"
-                    + "ages\030\002 \003(\014\"?\n\004Dump\022\017\n\007journal\030\001 \001(\t\022\020\n\010p"
-                    + "osition\030\002 \001(\003\022\024\n\ttimestamp\030\003 \001(\003:\0010\"J\n\016C"
-                    + "lientRollback\022\023\n\013destination\030\001 \001(\t\022\021\n\tcl",
-            "ient_id\030\002 \001(\t\022\020\n\010batch_id\030\003 \001(\003*4\n\013Compr"
-                    + "ession\022\010\n\004NONE\020\001\022\010\n\004ZLIB\020\002\022\010\n\004GZIP\020\003\022\007\n\003"
-                    + "LZF\020\004*\305\001\n\nPacketType\022\r\n\tHANDSHAKE\020\001\022\030\n\024C"
-                    + "LIENTAUTHENTICATION\020\002\022\007\n\003ACK\020\003\022\020\n\014SUBSCR"
-                    + "IPTION\020\004\022\022\n\016UNSUBSCRIPTION\020\005\022\007\n\003GET\020\006\022\014\n"
-                    + "\010MESSAGES\020\007\022\r\n\tCLIENTACK\020\010\022\014\n\010SHUTDOWN\020\t"
-                    + "\022\010\n\004DUMP\020\n\022\r\n\tHEARTBEAT\020\013\022\022\n\016CLIENTROLLB"
-                    + "ACK\020\014B1\n com.alibaba.otter.canal.protoco" + "lB\013CanalPacketH\001" };
-        com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner = new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
-
-            public com.google.protobuf.ExtensionRegistry assignDescriptors(com.google.protobuf.Descriptors.FileDescriptor root) {
-                descriptor = root;
-                return null;
-            }
-        };
-        com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(descriptorData,
-            new com.google.protobuf.Descriptors.FileDescriptor[] {},
-            assigner);
-        internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor = getDescriptor().getMessageTypes().get(0);
-        internal_static_com_alibaba_otter_canal_protocol_Packet_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor,
-            new java.lang.String[] { "MagicNumber", "Version", "Type", "Compression", "Body", });
-        internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor = getDescriptor().getMessageTypes()
-            .get(1);
-        internal_static_com_alibaba_otter_canal_protocol_HeartBeat_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor,
-            new java.lang.String[] { "SendTimestamp", "StartTimestamp", });
-        internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor = getDescriptor().getMessageTypes()
-            .get(2);
-        internal_static_com_alibaba_otter_canal_protocol_Handshake_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor,
-            new java.lang.String[] { "CommunicationEncoding", "Seeds", "SupportedCompressions", });
-        internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor = getDescriptor().getMessageTypes()
-            .get(3);
-        internal_static_com_alibaba_otter_canal_protocol_ClientAuth_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor,
-            new java.lang.String[] { "Username", "Password", "NetReadTimeout", "NetWriteTimeout", "Destination",
-            "ClientId", "Filter", "StartTimestamp", });
-        internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor = getDescriptor().getMessageTypes().get(4);
-        internal_static_com_alibaba_otter_canal_protocol_Ack_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor,
-            new java.lang.String[] { "ErrorCode", "ErrorMessage", });
-        internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor = getDescriptor().getMessageTypes()
-            .get(5);
-        internal_static_com_alibaba_otter_canal_protocol_ClientAck_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor,
-            new java.lang.String[] { "Destination", "ClientId", "BatchId", });
-        internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor = getDescriptor().getMessageTypes().get(6);
-        internal_static_com_alibaba_otter_canal_protocol_Sub_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor,
-            new java.lang.String[] { "Destination", "ClientId", "Filter", });
-        internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor = getDescriptor().getMessageTypes().get(7);
-        internal_static_com_alibaba_otter_canal_protocol_Unsub_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor,
-            new java.lang.String[] { "Destination", "ClientId", "Filter", });
-        internal_static_com_alibaba_otter_canal_protocol_Get_descriptor = getDescriptor().getMessageTypes().get(8);
-        internal_static_com_alibaba_otter_canal_protocol_Get_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_Get_descriptor,
-            new java.lang.String[] { "Destination", "ClientId", "FetchSize", "Timeout", "Unit", "AutoAck", });
-        internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor = getDescriptor().getMessageTypes().get(9);
-        internal_static_com_alibaba_otter_canal_protocol_Messages_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor,
-            new java.lang.String[] { "BatchId", "Messages", });
-        internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor = getDescriptor().getMessageTypes().get(10);
-        internal_static_com_alibaba_otter_canal_protocol_Dump_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor,
-            new java.lang.String[] { "Journal", "Position", "Timestamp", });
-        internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor = getDescriptor().getMessageTypes()
-            .get(11);
-        internal_static_com_alibaba_otter_canal_protocol_ClientRollback_fieldAccessorTable = new com.google.protobuf.GeneratedMessage.FieldAccessorTable(internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor,
-            new java.lang.String[] { "Destination", "ClientId", "BatchId", });
+      DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback();
     }
 
-    // @@protoc_insertion_point(outer_class_scope)
+    public static com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<ClientRollback>
+        PARSER = new com.google.protobuf.AbstractParser<ClientRollback>() {
+      @java.lang.Override
+      public ClientRollback parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new ClientRollback(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<ClientRollback> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<ClientRollback> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.alibaba.otter.canal.protocol.CanalPacket.ClientRollback getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_Packet_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_HeartBeat_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_Handshake_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_ClientAuth_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_Ack_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_ClientAck_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_Sub_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_Unsub_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_Get_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_Get_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_Messages_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_Dump_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_com_alibaba_otter_canal_protocol_ClientRollback_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\023CanalProtocol.proto\022 com.alibaba.otter" +
+      ".canal.protocol\"\205\002\n\006Packet\022\026\n\014magic_numb" +
+      "er\030\001 \001(\005H\000\022\021\n\007version\030\002 \001(\005H\001\022:\n\004type\030\003 " +
+      "\001(\0162,.com.alibaba.otter.canal.protocol.P" +
+      "acketType\022D\n\013compression\030\004 \001(\0162-.com.ali" +
+      "baba.otter.canal.protocol.CompressionH\002\022" +
+      "\014\n\004body\030\005 \001(\014B\026\n\024magic_number_presentB\021\n" +
+      "\017version_presentB\025\n\023compression_present\"" +
+      "<\n\tHeartBeat\022\026\n\016send_timestamp\030\001 \001(\003\022\027\n\017" +
+      "start_timestamp\030\002 \001(\003\"\255\001\n\tHandshake\022 \n\026c" +
+      "ommunication_encoding\030\001 \001(\tH\000\022\r\n\005seeds\030\002" +
+      " \001(\014\022M\n\026supported_compressions\030\003 \001(\0162-.c" +
+      "om.alibaba.otter.canal.protocol.Compress" +
+      "ionB \n\036communication_encoding_present\"\363\001" +
+      "\n\nClientAuth\022\020\n\010username\030\001 \001(\t\022\020\n\010passwo" +
+      "rd\030\002 \001(\014\022\032\n\020net_read_timeout\030\003 \001(\005H\000\022\033\n\021" +
+      "net_write_timeout\030\004 \001(\005H\001\022\023\n\013destination" +
+      "\030\005 \001(\t\022\021\n\tclient_id\030\006 \001(\t\022\016\n\006filter\030\007 \001(" +
+      "\t\022\027\n\017start_timestamp\030\010 \001(\003B\032\n\030net_read_t" +
+      "imeout_presentB\033\n\031net_write_timeout_pres" +
+      "ent\"H\n\003Ack\022\024\n\nerror_code\030\001 \001(\005H\000\022\025\n\rerro" +
+      "r_message\030\002 \001(\tB\024\n\022error_code_present\"E\n" +
+      "\tClientAck\022\023\n\013destination\030\001 \001(\t\022\021\n\tclien" +
+      "t_id\030\002 \001(\t\022\020\n\010batch_id\030\003 \001(\003\"=\n\003Sub\022\023\n\013d" +
+      "estination\030\001 \001(\t\022\021\n\tclient_id\030\002 \001(\t\022\016\n\006f" +
+      "ilter\030\007 \001(\t\"?\n\005Unsub\022\023\n\013destination\030\001 \001(" +
+      "\t\022\021\n\tclient_id\030\002 \001(\t\022\016\n\006filter\030\007 \001(\t\"\257\001\n" +
+      "\003Get\022\023\n\013destination\030\001 \001(\t\022\021\n\tclient_id\030\002" +
+      " \001(\t\022\022\n\nfetch_size\030\003 \001(\005\022\021\n\007timeout\030\004 \001(" +
+      "\003H\000\022\016\n\004unit\030\005 \001(\005H\001\022\022\n\010auto_ack\030\006 \001(\010H\002B" +
+      "\021\n\017timeout_presentB\016\n\014unit_presentB\022\n\020au" +
+      "to_ack_present\".\n\010Messages\022\020\n\010batch_id\030\001" +
+      " \001(\003\022\020\n\010messages\030\002 \003(\014\"S\n\004Dump\022\017\n\007journa" +
+      "l\030\001 \001(\t\022\020\n\010position\030\002 \001(\003\022\023\n\ttimestamp\030\003" +
+      " \001(\003H\000B\023\n\021timestamp_present\"J\n\016ClientRol" +
+      "lback\022\023\n\013destination\030\001 \001(\t\022\021\n\tclient_id\030" +
+      "\002 \001(\t\022\020\n\010batch_id\030\003 \001(\003*U\n\013Compression\022\037" +
+      "\n\033COMPRESSIONCOMPATIBLEPROTO2\020\000\022\010\n\004NONE\020" +
+      "\001\022\010\n\004ZLIB\020\002\022\010\n\004GZIP\020\003\022\007\n\003LZF\020\004*\346\001\n\nPacke" +
+      "tType\022\037\n\033PACKAGETYPECOMPATIBLEPROTO2\020\000\022\r" +
+      "\n\tHANDSHAKE\020\001\022\030\n\024CLIENTAUTHENTICATION\020\002\022" +
+      "\007\n\003ACK\020\003\022\020\n\014SUBSCRIPTION\020\004\022\022\n\016UNSUBSCRIP" +
+      "TION\020\005\022\007\n\003GET\020\006\022\014\n\010MESSAGES\020\007\022\r\n\tCLIENTA" +
+      "CK\020\010\022\014\n\010SHUTDOWN\020\t\022\010\n\004DUMP\020\n\022\r\n\tHEARTBEA" +
+      "T\020\013\022\022\n\016CLIENTROLLBACK\020\014B1\n com.alibaba.o" +
+      "tter.canal.protocolB\013CanalPacketH\001b\006prot" +
+      "o3"
+    };
+    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
+        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
+          public com.google.protobuf.ExtensionRegistry assignDescriptors(
+              com.google.protobuf.Descriptors.FileDescriptor root) {
+            descriptor = root;
+            return null;
+          }
+        };
+    com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        }, assigner);
+    internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_com_alibaba_otter_canal_protocol_Packet_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_Packet_descriptor,
+        new java.lang.String[] { "MagicNumber", "Version", "Type", "Compression", "Body", "MagicNumberPresent", "VersionPresent", "CompressionPresent", });
+    internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor =
+      getDescriptor().getMessageTypes().get(1);
+    internal_static_com_alibaba_otter_canal_protocol_HeartBeat_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_HeartBeat_descriptor,
+        new java.lang.String[] { "SendTimestamp", "StartTimestamp", });
+    internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor =
+      getDescriptor().getMessageTypes().get(2);
+    internal_static_com_alibaba_otter_canal_protocol_Handshake_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_Handshake_descriptor,
+        new java.lang.String[] { "CommunicationEncoding", "Seeds", "SupportedCompressions", "CommunicationEncodingPresent", });
+    internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor =
+      getDescriptor().getMessageTypes().get(3);
+    internal_static_com_alibaba_otter_canal_protocol_ClientAuth_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_ClientAuth_descriptor,
+        new java.lang.String[] { "Username", "Password", "NetReadTimeout", "NetWriteTimeout", "Destination", "ClientId", "Filter", "StartTimestamp", "NetReadTimeoutPresent", "NetWriteTimeoutPresent", });
+    internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor =
+      getDescriptor().getMessageTypes().get(4);
+    internal_static_com_alibaba_otter_canal_protocol_Ack_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_Ack_descriptor,
+        new java.lang.String[] { "ErrorCode", "ErrorMessage", "ErrorCodePresent", });
+    internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor =
+      getDescriptor().getMessageTypes().get(5);
+    internal_static_com_alibaba_otter_canal_protocol_ClientAck_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_ClientAck_descriptor,
+        new java.lang.String[] { "Destination", "ClientId", "BatchId", });
+    internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor =
+      getDescriptor().getMessageTypes().get(6);
+    internal_static_com_alibaba_otter_canal_protocol_Sub_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_Sub_descriptor,
+        new java.lang.String[] { "Destination", "ClientId", "Filter", });
+    internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor =
+      getDescriptor().getMessageTypes().get(7);
+    internal_static_com_alibaba_otter_canal_protocol_Unsub_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_Unsub_descriptor,
+        new java.lang.String[] { "Destination", "ClientId", "Filter", });
+    internal_static_com_alibaba_otter_canal_protocol_Get_descriptor =
+      getDescriptor().getMessageTypes().get(8);
+    internal_static_com_alibaba_otter_canal_protocol_Get_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_Get_descriptor,
+        new java.lang.String[] { "Destination", "ClientId", "FetchSize", "Timeout", "Unit", "AutoAck", "TimeoutPresent", "UnitPresent", "AutoAckPresent", });
+    internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor =
+      getDescriptor().getMessageTypes().get(9);
+    internal_static_com_alibaba_otter_canal_protocol_Messages_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_Messages_descriptor,
+        new java.lang.String[] { "BatchId", "Messages", });
+    internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor =
+      getDescriptor().getMessageTypes().get(10);
+    internal_static_com_alibaba_otter_canal_protocol_Dump_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_Dump_descriptor,
+        new java.lang.String[] { "Journal", "Position", "Timestamp", "TimestampPresent", });
+    internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor =
+      getDescriptor().getMessageTypes().get(11);
+    internal_static_com_alibaba_otter_canal_protocol_ClientRollback_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_com_alibaba_otter_canal_protocol_ClientRollback_descriptor,
+        new java.lang.String[] { "Destination", "ClientId", "BatchId", });
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
 }
diff --git a/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalProtocol.proto b/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalProtocol.proto
index 80f03439..e4e35b6d 100644
--- a/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalProtocol.proto
+++ b/protocol/src/main/java/com/alibaba/otter/canal/protocol/CanalProtocol.proto
@@ -1,3 +1,4 @@
+syntax = "proto3";
 package com.alibaba.otter.canal.protocol;
 
 option java_package = "com.alibaba.otter.canal.protocol";
@@ -5,6 +6,7 @@ option java_outer_classname = "CanalPacket";
 option optimize_for = SPEED;
 
 enum Compression {
+    COMPRESSIONCOMPATIBLEPROTO2 = 0;
     NONE = 1;
     ZLIB = 2;
     GZIP = 3;
@@ -12,6 +14,8 @@ enum Compression {
 }
 
 enum PacketType {
+    //compatible
+    PACKAGETYPECOMPATIBLEPROTO2 = 0;
     HANDSHAKE = 1;
     CLIENTAUTHENTICATION = 2;
     ACK = 3;
@@ -29,86 +33,122 @@ enum PacketType {
 }
 
 message Packet {
-    optional int32 magic_number = 1 [default = 17];
-    optional int32 version = 2 [default = 1];
-    optional PacketType type = 3;
-    optional Compression compression = 4 [default = NONE];
-    optional bytes body = 5;
+     //[default = 17];
+     oneof magic_number_present {
+         int32 magic_number = 1;
+     }
+     //[default = 1];
+     oneof version_present {
+          int32 version = 2;
+     };
+     PacketType type = 3;
+     //[default = NONE];
+     oneof compression_present {
+          Compression compression = 4;
+     }
+
+     bytes body = 5;
 }
 
 message HeartBeat {
-    optional int64 send_timestamp = 1;
-    optional int64 start_timestamp = 2;
+     int64 send_timestamp = 1;
+     int64 start_timestamp = 2;
 }
 
 message Handshake {
-    optional string communication_encoding = 1 [default = "utf8"];
-    optional bytes seeds = 2;
-    repeated Compression supported_compressions = 3;
+    //  [default = "utf8"];
+    oneof communication_encoding_present {
+        string communication_encoding = 1;
+    }
+     bytes seeds = 2;
+     Compression supported_compressions = 3;
 }
 
 // client authentication
 message ClientAuth {
-    optional string username = 1;
-    optional bytes password = 2; // hashed password with seeds from Handshake message
-    optional int32 net_read_timeout = 3 [default = 0]; // in seconds
-    optional int32 net_write_timeout = 4 [default = 0]; // in seconds
-    optional string destination = 5;
-    optional string client_id = 6;
-    optional string filter = 7;
-    optional int64 start_timestamp = 8;
+    string username = 1;
+    bytes password = 2; // hashed password with seeds from Handshake message
+    // [default = 0]
+    oneof net_read_timeout_present {
+         int32 net_read_timeout = 3; // in seconds
+    }
+    // [default = 0];
+    oneof net_write_timeout_present {
+        int32 net_write_timeout = 4; // in seconds
+    }
+    string destination = 5;
+    string client_id = 6;
+    string filter = 7;
+    int64 start_timestamp = 8;
 }
 
 message Ack {
-    optional int32 error_code = 1 [default = 0];
-    optional string error_message = 2; // if something like compression is not supported, erorr_message will tell about it.
+    //[default = 0]
+    oneof error_code_present {
+        int32 error_code = 1;
+    }
+    string error_message = 2; // if something like compression is not supported, erorr_message will tell about it.
 }
 
 message ClientAck {
-    optional string destination = 1;
-    optional string client_id = 2;
-    optional int64 batch_id = 3;
+    string destination = 1;
+    string client_id = 2;
+    int64 batch_id = 3;
 }
 
 // subscription
 message Sub {
-    optional string destination = 1;
-    optional string client_id = 2;
-    optional string filter = 7;
+    string destination = 1;
+    string client_id = 2;
+    string filter = 7;
 }
 
 // Unsubscription
 message Unsub {
-    optional string destination = 1;
-    optional string client_id = 2;
-    optional string filter = 7;
+    string destination = 1;
+    string client_id = 2;
+    string filter = 7;
 }
 
 //  PullRequest
 message Get {
-    optional string destination = 1;
-    optional string client_id = 2;
-    optional int32 fetch_size = 3;
-    optional int64 timeout = 4 [default = -1]; // 默认-1时代表不控制
-    optional int32 unit = 5 [default = 2];// 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
-    optional bool auto_ack = 6 [default = false]; // 是否自动ack
+    string destination = 1;
+    string client_id = 2;
+    int32 fetch_size = 3;
+    //[default = -1]
+    oneof timeout_present {
+        int64 timeout = 4; // 默认-1时代表不控制
+    }
+    //[default = 2]
+    oneof unit_present {
+        int32 unit = 5;// 数字类型，0:纳秒,1:毫秒,2:微秒,3:秒,4:分钟,5:小时,6:天
+    }
+    //[default = false]
+    oneof auto_ack_present {
+        bool auto_ack = 6; // 是否自动ack
+    }
+
 }
 
 //
 message Messages {
-	optional int64 batch_id = 1;
+	int64 batch_id = 1;
     repeated bytes messages = 2;
 }
 
 // TBD when new packets are required
 message Dump{
-    optional string journal = 1;
-    optional int64  position = 2;
-    optional int64 timestamp = 3 [default = 0];
+    string journal = 1;
+    int64  position = 2;
+    // [default = 0]
+    oneof timestamp_present {
+        int64 timestamp = 3;
+    }
+
 }
 
 message ClientRollback{
-    optional string destination = 1;
-    optional string client_id = 2;
-    optional int64 batch_id = 3;
+    string destination = 1;
+    string client_id = 2;
+    int64 batch_id = 3;
 }
\ No newline at end of file
diff --git a/protocol/src/main/java/com/alibaba/otter/canal/protocol/EntryProtocol.proto b/protocol/src/main/java/com/alibaba/otter/canal/protocol/EntryProtocol.proto
index 526db41f..1330bbc7 100644
--- a/protocol/src/main/java/com/alibaba/otter/canal/protocol/EntryProtocol.proto
+++ b/protocol/src/main/java/com/alibaba/otter/canal/protocol/EntryProtocol.proto
@@ -1,3 +1,4 @@
+syntax = "proto3";
 package com.alibaba.otter.canal.protocol;
 
 option java_package = "com.alibaba.otter.canal.protocol";
@@ -10,88 +11,101 @@ option optimize_for = SPEED;
  ****************************************************************/
 message Entry {
 	/**协议头部信息**/
-	optional Header						header 				= 1;
-	
-	/**打散后的事件类型**/
-	optional EntryType					entryType			= 2 [default = ROWDATA];
-	
+     Header						header 				= 1;
+	///**打散后的事件类型**/ [default = ROWDATA]
+	oneof entryType_present{
+		EntryType					entryType			= 2;
+	}
+
 	/**传输的二进制数组**/
-	optional bytes						storeValue			= 3;
+	bytes						storeValue			= 3;
 }
 
 /**message Header**/
 message Header {
-	/**协议的版本号**/
-	optional int32 					version				= 1 [default = 1];	
-	
+	/**协议的版本号**/  //[default = 1]
+	oneof version_present {
+		int32 					version				= 1;
+	}
+
+
 	/**binlog/redolog 文件名**/
-	optional string					logfileName			= 2;
-	
+	string					logfileName			= 2;
+
 	/**binlog/redolog 文件的偏移位置**/
-	optional int64 					logfileOffset		= 3;
-	
+	int64 					logfileOffset		= 3;
+
 	/**服务端serverId**/
-	optional 	int64				serverId         	= 4;	
-	
+	int64				serverId         	= 4;
+
 	/** 变更数据的编码 **/
-	optional string					serverenCode		= 5;
-	
+	string					serverenCode		= 5;
+
 	/**变更数据的执行时间 **/
-	optional int64					executeTime			= 6;
-	
-	/** 变更数据的来源**/
-	optional Type					sourceType			= 7 [default = MYSQL];
-	
+	int64					executeTime			= 6;
+
+	/** 变更数据的来源**/ //[default = MYSQL]
+	oneof sourceType_present {
+		Type					sourceType			= 7;
+	}
+
+
 	/** 变更数据的schemaname**/
-	optional string					schemaName			= 8;
-	
+	string					schemaName			= 8;
+
 	/**变更数据的tablename**/
-	optional string					tableName			= 9;	
-	
+	string					tableName			= 9;
+
 	/**每个event的长度**/
-	optional int64					eventLength         = 10;
-	
-	/**数据变更类型**/
-	optional EventType 				eventType			= 11 [default = UPDATE];
-	
+	int64					eventLength         = 10;
+
+	/**数据变更类型**/  // [default = UPDATE]
+	oneof eventType_present {
+		EventType 				eventType			= 11;
+	}
+
+
 	/**预留扩展**/
 	repeated Pair					props				= 12;
 
     /**当前事务的gitd**/
-	optional string                 gtid                = 13;
+	string                 gtid                = 13;
 }
 
 /**每个字段的数据结构**/
 message Column {
 	/**字段下标**/
-	optional int32		index			= 		1;
-	
+	int32		index			= 		1;
+
 	/**字段java中类型**/
-	optional int32 		sqlType			= 		2;
-	
+	int32 		sqlType			= 		2;
+
 	/**字段名称(忽略大小写)，在mysql中是没有的**/
-	optional string		name			=		3;
-	
+	string		name			=		3;
+
 	/**是否是主键**/
-	optional bool 		isKey			= 		4;
-	
+	bool 		isKey			= 		4;
+
 	/**如果EventType=UPDATE,用于标识这个字段值是否有修改**/
-	optional bool		updated			= 		5;
-	
-	/** 标识是否为空  **/
-	optional bool		isNull			= 		6 [default = false];
-	
+	bool		updated			= 		5;
+
+	/** 标识是否为空  **/ //[default = false]
+	oneof isNull_present {
+		bool		isNull			= 		6;
+	}
+
+
 	/**预留扩展**/
-	repeated Pair		props			=		7;	
-	
+	repeated Pair		props			=		7;
+
 	/** 字段值,timestamp,Datetime是一个时间格式的文本 **/
-	optional string		value			= 		8;
-	
+	string		value			= 		8;
+
 	/** 对应数据对象原始长度 **/
-	optional int32		length			= 		9;
-	
+	int32		length			= 		9;
+
 	/**字段mysql类型**/
-	optional string		mysqlType		= 		10;
+	string		mysqlType		= 		10;
 }
 
 message RowData {
@@ -101,73 +115,81 @@ message RowData {
 
 	/** 字段信息，增量数据(修改后,新增后)  **/
 	repeated Column			afterColumns	= 		2;
-	
+
 	/**预留扩展**/
-	repeated Pair			props			=		3;	
+	repeated Pair			props			=		3;
 }
 
 /**message row 每行变更数据的数据结构**/
 message RowChange {
 
 	/**tableId,由数据库产生**/
-	optional int64	 		tableId			=		1;
-	
-	/**数据变更类型**/
-	optional EventType 		eventType		= 		2 [default = UPDATE];
-	
-	/** 标识是否是ddl语句  **/
-	optional bool			isDdl			= 		10 [default = false];
+	int64	 		tableId			=		1;
+
+
+	/**数据变更类型**/ //[default = UPDATE]
+	oneof eventType_present {
+		EventType 		eventType		= 		2;
+	}
+
+
+	/** 标识是否是ddl语句  **/ // [default = false]
+	oneof isDdl_present {
+		bool			isDdl			= 		10;
+	}
+
 
 	/** ddl/query的sql语句  **/
-	optional string			sql 			= 		11;
-	
+	string			sql 			= 		11;
+
 	/** 一次数据库变更可能存在多行  **/
 	repeated RowData		rowDatas		= 		12;
-	
+
 	/**预留扩展**/
-	repeated Pair			props			=		13;	
-	
+	repeated Pair			props			=		13;
+
 	/** ddl/query的schemaName，会存在跨库ddl，需要保留执行ddl的当前schemaName  **/
-	optional string			ddlSchemaName 	= 		14;
+	string			ddlSchemaName 	= 		14;
 }
 
 /**开始事务的一些信息**/
 message TransactionBegin{
-	
+
 	/**已废弃，请使用header里的executeTime**/
-	optional int64			executeTime		=		1;
-	
+	int64			executeTime		=		1;
+
 	/**已废弃，Begin里不提供事务id**/
-	optional string			transactionId	=		2;
-	
+	string			transactionId	=		2;
+
 	/**预留扩展**/
-	repeated Pair			props			=		3;	
-	
+	repeated Pair			props			=		3;
+
 	/**执行的thread Id**/
-	optional int64			threadId		=		4;
+	int64			threadId		=		4;
 }
 
 /**结束事务的一些信息**/
 message TransactionEnd{
-	
+
 	/**已废弃，请使用header里的executeTime**/
-	optional int64			executeTime		=		1;
-	
+	int64			executeTime		=		1;
+
 	/**事务号**/
-	optional string			transactionId	=		2;
-	
+	string			transactionId	=		2;
+
 	/**预留扩展**/
-	repeated Pair			props			=		3;	
+	repeated Pair			props			=		3;
 }
 
 /**预留扩展**/
 message Pair{
-	optional string 		key				= 			1;	
-	optional string 		value			= 			2;	
+	string 		key				= 			1;
+	string 		value			= 			2;
 }
 
 /**打散后的事件类型，主要用于标识事务的开始，变更数据，结束**/
 enum EntryType{
+	ENTRYTYPECOMPATIBLEPROTO2 = 0;
 	TRANSACTIONBEGIN 		=		1;
 	ROWDATA					=		2;
 	TRANSACTIONEND			=		3;
@@ -178,6 +200,7 @@ enum EntryType{
 
 /** 事件类型 **/
 enum EventType {
+	EVENTTYPECOMPATIBLEPROTO2 = 0;
     INSERT 		= 		1;
     UPDATE 		= 		2;
     DELETE 		= 		3;
@@ -200,6 +223,7 @@ enum EventType {
 
 /**数据库类型**/
 enum Type {
+	TYPECOMPATIBLEPROTO2 = 0;
     ORACLE		= 		1;
     MYSQL		= 		2;
     PGSQL		= 		3;
diff --git a/server/src/main/java/com/alibaba/otter/canal/server/netty/listener/ChannelFutureAggregator.java b/server/src/main/java/com/alibaba/otter/canal/server/netty/listener/ChannelFutureAggregator.java
index 923001d1..e4793640 100644
--- a/server/src/main/java/com/alibaba/otter/canal/server/netty/listener/ChannelFutureAggregator.java
+++ b/server/src/main/java/com/alibaba/otter/canal/server/netty/listener/ChannelFutureAggregator.java
@@ -2,7 +2,7 @@ package com.alibaba.otter.canal.server.netty.listener;
 
 import com.alibaba.otter.canal.protocol.CanalPacket;
 import com.google.common.base.Preconditions;
-import com.google.protobuf.GeneratedMessage;
+import com.google.protobuf.GeneratedMessageV3;
 import org.jboss.netty.channel.ChannelFuture;
 import org.jboss.netty.channel.ChannelFutureListener;
 
@@ -16,19 +16,19 @@ public class ChannelFutureAggregator implements ChannelFutureListener {
 
     private ClientRequestResult result;
 
-    public ChannelFutureAggregator(String destination, GeneratedMessage request, CanalPacket.PacketType type, int amount, long latency, boolean empty) {
+    public ChannelFutureAggregator(String destination, GeneratedMessageV3 request, CanalPacket.PacketType type, int amount, long latency, boolean empty) {
         this(destination, request, type, amount, latency, empty, (short) 0);
     }
 
-    public ChannelFutureAggregator(String destination, GeneratedMessage request, CanalPacket.PacketType type, int amount, long latency) {
+    public ChannelFutureAggregator(String destination, GeneratedMessageV3 request, CanalPacket.PacketType type, int amount, long latency) {
         this(destination, request, type, amount, latency, false, (short) 0);
     }
 
-    public ChannelFutureAggregator(String destination, GeneratedMessage request, CanalPacket.PacketType type, int amount, long latency, short errorCode) {
+    public ChannelFutureAggregator(String destination, GeneratedMessageV3 request, CanalPacket.PacketType type, int amount, long latency, short errorCode) {
         this(destination, request, type, amount, latency, false, errorCode);
     }
 
-    private ChannelFutureAggregator(String destination, GeneratedMessage request, CanalPacket.PacketType type, int amount, long latency, boolean empty, short errorCode) {
+    private ChannelFutureAggregator(String destination, GeneratedMessageV3 request, CanalPacket.PacketType type, int amount, long latency, boolean empty, short errorCode) {
         this.result = new ClientRequestResult.Builder()
                 .destination(destination)
                 .type(type)
@@ -56,7 +56,7 @@ public class ChannelFutureAggregator implements ChannelFutureListener {
 
         private String                 destination;
         private CanalPacket.PacketType type;
-        private GeneratedMessage       request;
+        private GeneratedMessageV3       request;
         private int                    amount;
         private long                   latency;
         private short                  errorCode;
@@ -81,7 +81,7 @@ public class ChannelFutureAggregator implements ChannelFutureListener {
 
             private String                 destination;
             private CanalPacket.PacketType type;
-            private GeneratedMessage       request;
+            private GeneratedMessageV3       request;
             private int                    amount;
             private long                   latency;
             private short                  errorCode;
@@ -98,7 +98,7 @@ public class ChannelFutureAggregator implements ChannelFutureListener {
                 return this;
             }
 
-            Builder request(GeneratedMessage request) {
+            Builder request(GeneratedMessageV3 request) {
                 this.request = request;
                 return this;
             }
@@ -153,7 +153,7 @@ public class ChannelFutureAggregator implements ChannelFutureListener {
             return type;
         }
 
-        public GeneratedMessage getRequest() {
+        public GeneratedMessageV3 getRequest() {
             return request;
         }
 
diff --git a/server/src/test/java/com/alibaba/otter/canal/server/CanalServerWithNettyTest.java b/server/src/test/java/com/alibaba/otter/canal/server/CanalServerWithNettyTest.java
index 3b3c0ee0..673918fe 100644
--- a/server/src/test/java/com/alibaba/otter/canal/server/CanalServerWithNettyTest.java
+++ b/server/src/test/java/com/alibaba/otter/canal/server/CanalServerWithNettyTest.java
@@ -66,6 +66,8 @@ public class CanalServerWithNettyTest {
 
     @Test
     public void testAuth() {
+
+
         try {
             SocketChannel channel = SocketChannel.open();
             channel.connect(new InetSocketAddress("127.0.0.1", 1088));
@@ -80,7 +82,7 @@ public class CanalServerWithNettyTest {
             }
             //
             Handshake handshake = Handshake.parseFrom(p.getBody());
-            System.out.println(handshake.getSupportedCompressionsList());
+            System.out.println(handshake.getSupportedCompressions());
             //
             ClientAuth ca = ClientAuth.newBuilder()
                 .setUsername("")