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From "vinoyang (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (FLINK-8887) ClusterClient.getJobStatus can throw FencingTokenException
Date Wed, 07 Mar 2018 03:23:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-8887?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

vinoyang reassigned FLINK-8887:
-------------------------------

    Assignee: vinoyang

> ClusterClient.getJobStatus can throw FencingTokenException
> ----------------------------------------------------------
>
>                 Key: FLINK-8887
>                 URL: https://issues.apache.org/jira/browse/FLINK-8887
>             Project: Flink
>          Issue Type: Bug
>          Components: Distributed Coordination
>    Affects Versions: 1.5.0
>            Reporter: Gary Yao
>            Assignee: vinoyang
>            Priority: Blocker
>              Labels: flip-6
>             Fix For: 1.5.0
>
>
> *Description*
> Calling {{RestClusterClient.getJobStatus}} or {{MiniClusterClient.getJobStatus}} can
result in a {{FencingTokenException}}. 
> *Analysis*
> {{Dispatcher.requestJobStatus}} first looks the {{JobManagerRunner}} up by job id. If
a reference is found, {{requestJobStatus}} is called on the respective instance. If not, the
{{ArchivedExecutionGraphStore}} is queried. However, between the lookup and the method call,
the {{JobMaster}} of the respective job may have lost leadership already (job finished), and
has set the fencing token to {{null}}.
> *Stacktrace*
> {noformat}
> Caused by: org.apache.flink.runtime.rpc.exceptions.FencingTokenException: Fencing token
mismatch: Ignoring message LocalFencedMessage(null, LocalRpcInvocation(requestJobStatus(Time)))
because the fencing token null did not match the expected fencing token b8423c75bc6838244b8c93c8bd4a4f51.
> 	at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleMessage(FencedAkkaRpcActor.java:73)
> 	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$onReceive$1(AkkaRpcActor.java:132)
> 	at akka.actor.ActorCell$$anonfun$become$1.applyOrElse(ActorCell.scala:544)
> 	at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
> 	at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95)
> 	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
> 	at akka.actor.ActorCell.invoke(ActorCell.scala:495)
> 	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
> 	at akka.dispatch.Mailbox.run(Mailbox.scala:224)
> 	at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
> 	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> 	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> 	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> 	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
> {noformat}
> {noformat}
> Caused by: org.apache.flink.runtime.rpc.exceptions.FencingTokenException: Fencing token
not set: Ignoring message LocalFencedMessage(null, LocalRpcInvocation(requestJobStatus(Time)))
because the fencing token is null.
> 	at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleMessage(FencedAkkaRpcActor.java:56)
> 	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$onReceive$1(AkkaRpcActor.java:132)
> 	at akka.actor.ActorCell$$anonfun$become$1.applyOrElse(ActorCell.scala:544)
> 	at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
> 	at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95)
> 	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
> 	at akka.actor.ActorCell.invoke(ActorCell.scala:495)
> 	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
> 	at akka.dispatch.Mailbox.run(Mailbox.scala:224)
> 	at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
> 	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> 	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> 	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> 	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
> {noformat}



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