flinkcdc任务老是过段时间就异常什么原因？

"flinkcdc任务老是过段时间就异常什么原因？
2023-08-11 09:51:52
java.lang.RuntimeException: One or more fetchers have encountered exception
at org.apache.flink.connector.base.source.reader.fetcher.SplitFetcherManager.checkErrors(SplitFetcherManager.java:223)
at org.apache.flink.connector.base.source.reader.SourceReaderBase.getNextFetch(SourceReaderBase.java:154)
at org.apache.flink.connector.base.source.reader.SourceReaderBase.pollNext(SourceReaderBase.java:116)
at org.apache.flink.connector.base.source.reader.SourceReaderBase.pollNext(SourceReaderBase.java:141)
at org.apache.flink.streaming.api.operators.SourceOperator.emitNext(SourceOperator.java:305)
at org.apache.flink.streaming.runtime.io.StreamTaskSourceInput.emitNext(StreamTaskSourceInput.java:69)
at org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:66)
at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:423)
at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:204)
at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:684)
at org.apache.flink.streaming.runtime.tasks.StreamTask.executeInvoke(StreamTask.java:639)
at org.apache.flink.streaming.runtime.tasks.StreamTask.runWithCleanUpOnFail(StreamTask.java:650)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:623)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:779)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:566)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.RuntimeException: SplitFetcher thread 1311 received unexpected exception while polling the records
at org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.runOnce(SplitFetcher.java:148)
at org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.run(SplitFetcher.java:103)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
... 1 more
Caused by: org.apache.kafka.connect.errors.ConnectException: An exception occurred in the change event producer. This connector will be stopped.
at io.debezium.pipeline.ErrorHandler.setProducerThrowable(ErrorHandler.java:42)
at com.ververica.cdc.connectors.mysql.debezium.task.context.MySqlErrorHandler.setProducerThrowable(MySqlErrorHandler.java:72)
at io.debezium.connector.mysql.MySqlStreamingChangeEventSource$ReaderThreadLifecycleListener.onCommunicationFailure(MySqlStreamingChangeEventSource.java:1185)
at com.github.shyiko.mysql.binlog.BinaryLogClient.listenForEventPackets(BinaryLogClient.java:973)
at com.github.shyiko.mysql.binlog.BinaryLogClient.connect(BinaryLogClient.java:606)
at com.github.shyiko.mysql.binlog.BinaryLogClient$7.run(BinaryLogClient.java:850)
... 1 more
Caused by: io.debezium.DebeziumException: Failed to deserialize data of EventHeaderV4{timestamp=1691717894000, eventType=EXT_UPDATE_ROWS, serverId=1178858340, headerLength=19, dataLength=7697, nextPosition=77512634, flags=0}
at io.debezium.connector.mysql.MySqlStreamingChangeEventSource.wrap(MySqlStreamingChangeEventSource.java:1146)
... 5 more
Caused by: com.github.shyiko.mysql.binlog.event.deserialization.EventDataDeserializationException: Failed to deserialize data of EventHeaderV4{timestamp=1691717894000, eventType=EXT_UPDATE_ROWS, serverId=1178858340, headerLength=19, dataLength=7697, nextPosition=77512634, flags=0}
at com.github.shyiko.mysql.binlog.event.deserialization.EventDeserializer.deserializeEventData(EventDeserializer.java:309)
at com.github.shyiko.mysql.binlog.event.deserialization.EventDeserializer.nextEvent(EventDeserializer.java:232)
at io.debezium.connector.mysql.MySqlStreamingChangeEventSource$1.nextEvent(MySqlStreamingChangeEventSource.java:233)
at com.github.shyiko.mysql.binlog.BinaryLogClient.listenForEventPackets(BinaryLogClient.java:945)
... 3 more
Caused by: java.io.EOFException
at com.github.shyiko.mysql.binlog.io.ByteArrayInputStream.fill(ByteArrayInputStream.java:113)
at com.github.shyiko.mysql.binlog.io.ByteArrayInputStream.read(ByteArrayInputStream.java:104)
at com.github.shyiko.mysql.binlog.event.deserialization.AbstractRowsEventDataDeserializer.deserializeJson(AbstractRowsEventDataDeserializer.java:431)
at com.github.shyiko.mysql.binlog.event.deserialization.AbstractRowsEventDataDeserializer.deserializeCell(AbstractRowsEventDataDeserializer.java:199)
at com.github.shyiko.mysql.binlog.event.deserialization.AbstractRowsEventDataDeserializer.deserializeRow(AbstractRowsEventDataDeserializer.java:143)
at com.github.shyiko.mysql.binlog.event.deserialization.UpdateRowsEventDataDeserializer.deserializeRows(UpdateRowsEventDataDeserializer.java:72)
at com.github.shyiko.mysql.binlog.event.deserialization.UpdateRowsEventDataDeserializer.deserialize(UpdateRowsEventDataDeserializer.java:58)
at com.github.shyiko.mysql.binlog.event.deserialization.UpdateRowsEventDataDeserializer.deserialize(UpdateRowsEventDataDeserializer.java:33)
at com.github.shyiko.mysql.binlog.event.deserialization.EventDeserializer.deserializeEventData(EventDeserializer.java:303)
... 6 more"