Uploaded image for project: 'Flink'
  1. Flink
  2. FLINK-5464

MetricQueryService throws NullPointerException on JobManager

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.2.0, 1.3.0
    • Fix Version/s: 1.2.0, 1.3.0
    • Component/s: Metrics, Webfrontend
    • Labels:
      None

      Description

      I'm using Flink 699f4b0.

      My JobManager log contains many of these log entries:

      2017-01-11 19:42:05,778 WARN  org.apache.flink.runtime.webmonitor.metrics.MetricFetcher     - Fetching metrics failed.
      akka.pattern.AskTimeoutException: Ask timed out on [Actor[akka://flink/user/MetricQueryService#-970662317]] after [10000 ms]
      	at akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:334)
      	at akka.actor.Scheduler$$anon$7.run(Scheduler.scala:117)
      	at scala.concurrent.Future$InternalCallbackExecutor$.scala$concurrent$Future$InternalCallbackExecutor$$unbatchedExecute(Future.scala:694)
      	at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:691)
      	at akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(Scheduler.scala:474)
      	at akka.actor.LightArrayRevolverScheduler$$anon$8.executeBucket$1(Scheduler.scala:425)
      	at akka.actor.LightArrayRevolverScheduler$$anon$8.nextTick(Scheduler.scala:429)
      	at akka.actor.LightArrayRevolverScheduler$$anon$8.run(Scheduler.scala:381)
      	at java.lang.Thread.run(Thread.java:745)
      2017-01-11 19:42:07,765 WARN  org.apache.flink.runtime.metrics.dump.MetricQueryService      - An exception occurred while processing a message.
      java.lang.NullPointerException
      	at org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.serializeGauge(MetricDumpSerialization.java:162)
      	at org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.access$300(MetricDumpSerialization.java:47)
      	at org.apache.flink.runtime.metrics.dump.MetricDumpSerialization$MetricDumpSerializer.serialize(MetricDumpSerialization.java:90)
      	at org.apache.flink.runtime.metrics.dump.MetricQueryService.onReceive(MetricQueryService.java:109)
      	at akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:167)
      	at akka.actor.Actor$class.aroundReceive(Actor.scala:467)
      	at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:97)
      	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
      	at akka.actor.ActorCell.invoke(ActorCell.scala:487)
      	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
      	at akka.dispatch.Mailbox.run(Mailbox.scala:220)
      	at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
      	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
      	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
      	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
      	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
      

        Attachments

          Activity

            People

            • Assignee:
              Zentol Chesnay Schepler
              Reporter:
              rmetzger Robert Metzger
            • Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: