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From David Morávek (Jira) <j...@apache.org>
Subject [jira] [Commented] (FLINK-22646) Accessing DeclarativeSlotManager metrics during unregister throws NPE
Date Wed, 12 May 2021 10:42:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-22646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17343167#comment-17343167
] 

David Morávek commented on FLINK-22646:
---------------------------------------

Portable Runner tests are failing.

> Accessing DeclarativeSlotManager metrics during unregister throws NPE
> ---------------------------------------------------------------------
>
>                 Key: FLINK-22646
>                 URL: https://issues.apache.org/jira/browse/FLINK-22646
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Metrics
>    Affects Versions: 1.13.0
>            Reporter: David Morávek
>            Priority: Major
>
> NPE is thrown when accessing DeclarativeSlotManager metrics during their un-register.
> {code:java}
> May 08, 2021 4:57:46 AM org.apache.flink.runtime.metrics.MetricRegistryImpl unregister
> WARNING: Error while unregistering metric: taskSlotsAvailable.
> java.lang.NullPointerException
> 	at org.apache.flink.runtime.resourcemanager.slotmanager.DeclarativeSlotManager.getNumberFreeSlots(DeclarativeSlotManager.java:715)
> 	at org.apache.flink.runtime.resourcemanager.slotmanager.DeclarativeSlotManager.lambda$registerSlotManagerMetrics$2(DeclarativeSlotManager.java:200)
> 	at org.apache.beam.runners.flink.metrics.Metrics.toString(Metrics.java:33)
> 	at org.apache.beam.runners.flink.metrics.FileReporter.notifyOfRemovedMetric(FileReporter.java:72)
> 	at org.apache.flink.runtime.metrics.MetricRegistryImpl.unregister(MetricRegistryImpl.java:435)
> 	at org.apache.flink.runtime.metrics.groups.AbstractMetricGroup.close(AbstractMetricGroup.java:333)
> 	at org.apache.flink.runtime.resourcemanager.slotmanager.DeclarativeSlotManager.close(DeclarativeSlotManager.java:241)
> 	at org.apache.flink.runtime.resourcemanager.ResourceManager.stopResourceManagerServices(ResourceManager.java:298)
> 	at org.apache.flink.runtime.resourcemanager.ResourceManager.onStop(ResourceManager.java:275)
> 	at org.apache.flink.runtime.rpc.RpcEndpoint.internalCallOnStop(RpcEndpoint.java:214)
> 	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor$StartedState.terminate(AkkaRpcActor.java:563)
> 	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleControlMessage(AkkaRpcActor.java:186)
> 	at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26)
> 	at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21)
> 	at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:123)
> 	at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21)
> 	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:170)
> 	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
> 	at akka.actor.Actor$class.aroundReceive(Actor.scala:517)
> 	at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225)
> 	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592)
> 	at akka.actor.ActorCell.invoke(ActorCell.scala:561)
> 	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258)
> 	at akka.dispatch.Mailbox.run(Mailbox.scala:225)
> 	at akka.dispatch.Mailbox.exec(Mailbox.scala:235)
> 	at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> 	at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> 	at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> 	at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
> {code}



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