[FLINK-9838] Slot request failed Exceptions after completing a job

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5.1, 1.6.0
• Fix Version/s: 1.5.2, 1.6.0
• Component/s: Runtime / Coordination
• Labels: pull-request-available
• Assignee: Till Rohrmann
• Reporter: Nico Kruber
• Created: 12/Jul/18 14:49
• Updated: 23/Jul/18 22:11
• Resolved: 23/Jul/18 22:11

Description

Currently, after a job finished, e.g. the following one, several exceptions are logged (at INFO level) about failed slot requests although the job has run successfully.

StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
env.fromElements(1, 2, 3, 4).print();
env.execute();

16:28:16,106 INFO  org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager  - Closing the SlotManager.
16:28:16,106 INFO  org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager  - Suspending the SlotManager.
16:28:16,106 INFO  org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager  - Unregister TaskManager aa20e76adb9aee0cdadc50dbc06ea208 from the SlotManager.
16:28:16,107 INFO  org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - Slot request with allocation id f99ff6d66f7bc618a9ee6e9470e0cdb1 for job 1bdaafd1072e210790790b99e7741b6a failed.
org.apache.flink.util.FlinkException: The assigned slot b21f8807-5d0a-4e53-9e55-b6522b4a41c0_0 was removed.
	at org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager.removeSlot(SlotManager.java:786)
	at org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager.removeSlots(SlotManager.java:756)
	at org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager.internalUnregisterTaskManager(SlotManager.java:948)
	at org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager.unregisterTaskManager(SlotManager.java:372)
	at org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager.suspend(SlotManager.java:234)
	at org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager.close(SlotManager.java:251)
	at org.apache.flink.runtime.resourcemanager.ResourceManager.postStop(ResourceManager.java:224)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.postStop(AkkaRpcActor.java:105)
	at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.postStop(FencedAkkaRpcActor.java:40)
	at akka.actor.Actor$class.aroundPostStop(Actor.scala:515)
	at akka.actor.UntypedActor.aroundPostStop(UntypedActor.scala:95)
	at akka.actor.dungeon.FaultHandling$class.akka$actor$dungeon$FaultHandling$$finishTerminate(FaultHandling.scala:210)
	at akka.actor.dungeon.FaultHandling$class.terminate(FaultHandling.scala:172)
	at akka.actor.ActorCell.terminate(ActorCell.scala:374)
	at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:467)
	at akka.actor.ActorCell.systemInvoke(ActorCell.scala:483)
	at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:282)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:260)
	at akka.dispatch.Mailbox.run(Mailbox.scala:224)
	at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
16:28:16,109 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor            - Stopping TaskExecutor akka://flink/user/taskmanager_0.
16:28:16,110 INFO  org.apache.flink.runtime.state.TaskExecutorLocalStateStoresManager  - Shutting down TaskExecutorLocalStateStoresManager.
16:28:16,109 INFO  org.apache.flink.runtime.dispatcher.StandaloneDispatcher      - Stopping dispatcher akka://flink/user/dispatcher421f3c27-5248-40d4-b219-f0c23480bd6f.
16:28:16,111 INFO  org.apache.flink.runtime.dispatcher.StandaloneDispatcher      - Stopping all currently running jobs of dispatcher akka://flink/user/dispatcher421f3c27-5248-40d4-b219-f0c23480bd6f.
...

Issue Links

• links to: GitHub Pull Request #6373