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Hi All, I appreciate if someone could shed a light...
# troubleshooting
s
Hi All, I appreciate if someone could shed a light on the possible meaning or the following exception I see from time to time in one of my Jobs.
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2024-09-19 01:25:05
org.apache.flink.util.FlinkExpectedException: The TaskExecutor is shutting down.
	at org.apache.flink.runtime.taskexecutor.TaskExecutor.onStop(TaskExecutor.java:504)
	at org.apache.flink.runtime.rpc.RpcEndpoint.internalCallOnStop(RpcEndpoint.java:239)
	at org.apache.flink.runtime.rpc.pekko.PekkoRpcActor$StartedState.lambda$terminate$0(PekkoRpcActor.java:574)
	at org.apache.flink.runtime.concurrent.ClassLoadingUtils.runWithContextClassLoader(ClassLoadingUtils.java:83)
	at org.apache.flink.runtime.rpc.pekko.PekkoRpcActor$StartedState.terminate(PekkoRpcActor.java:573)
	at org.apache.flink.runtime.rpc.pekko.PekkoRpcActor.handleControlMessage(PekkoRpcActor.java:196)
	at org.apache.pekko.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:33)
	at org.apache.pekko.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:29)
	at scala.PartialFunction.applyOrElse(PartialFunction.scala:127)
	at scala.PartialFunction.applyOrElse$(PartialFunction.scala:126)
	at org.apache.pekko.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:29)
	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:175)
	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:176)
	at org.apache.pekko.actor.Actor.aroundReceive(Actor.scala:547)
	at org.apache.pekko.actor.Actor.aroundReceive$(Actor.scala:545)
	at org.apache.pekko.actor.AbstractActor.aroundReceive(AbstractActor.scala:229)
	at org.apache.pekko.actor.ActorCell.receiveMessage(ActorCell.scala:590)
	at org.apache.pekko.actor.ActorCell.invoke(ActorCell.scala:557)
	at org.apache.pekko.dispatch.Mailbox.processMailbox(Mailbox.scala:280)
	at org.apache.pekko.dispatch.Mailbox.run(Mailbox.scala:241)
	at org.apache.pekko.dispatch.Mailbox.exec(Mailbox.scala:253)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
d
The exception indicates that the TaskExecutor of your Flink job is in the process of shutting down. It’s not necessarily an error but a notification that the TaskExecutor has initiated its shutdown sequence.
This line
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org.apache.flink.util.FlinkExpectedException: The TaskExecutor is shutting down.
Tells us that an expected event in Flink’s execution model has occurred—the TaskExecutor is deliberately stopping.
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FlinkExpectedException
Suggests its part of normal operation
onStop() message in the error message indicates it received the signal to stop. So basically this exception signifies a controlled shutdown of the TaskExecutor, which is a routine operation in Flink when jobs end or the system needs to reallocate resources. To understand why this is happening in your specific case, you may want to look into the logs preceding this exception for any clues about the trigger ie job completion messages, errors leading to shutdown, or external commands to stop the service. If it’s not expected during your job’s normal operation, investigate potential issues with job configuration, resource constraints, or cluster management.
s
Thanks a lot, I’ll have a look.
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