Robert Metzger created FLINK-5464: ------------------------------------- Summary: MetricQueryService throws NullPointerException on JobManager Key: FLINK-5464 URL: https://issues.apache.org/jira/browse/FLINK-5464 Project: Flink Issue Type: Bug Components: Webfrontend Affects Versions: 1.2.0 Reporter: Robert Metzger
I'm using Flink 699f4b0. My JobManager log contains many of these log entries: {code} 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) {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)