[
https://issues.apache.org/jira/browse/FLINK-5464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15821920#comment-15821920
]
ASF GitHub Bot commented on FLINK-5464:
---------------------------------------
Github user rmetzger commented on the issue:
https://github.com/apache/flink/pull/3103
While testing this PR, I found that the jobmanager.log is now full with
exceptions like this one:
```
java.io.EOFException
at java.io.DataInputStream.readInt(DataInputStream.java:392)
at
org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.deserializeString(MetricDumpSerialization.java:230)
at
org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.deserializeMetricInfo(MetricDumpSerialization.java:278)
at
org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.deserializeGauge(MetricDumpSerialization.java:243)
at
org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.access$800(MetricDumpSerialization.java:47)
at
org.apache.flink.runtime.metrics.dump.MetricDumpSerialization$MetricDumpDeserializer.deserialize(MetricDumpSerialization.java:214)
at
org.apache.flink.runtime.webmonitor.metrics.MetricFetcher.addMetrics(MetricFetcher.java:196)
at
org.apache.flink.runtime.webmonitor.metrics.MetricFetcher.access$500(MetricFetcher.java:58)
at
org.apache.flink.runtime.webmonitor.metrics.MetricFetcher$4.onSuccess(MetricFetcher.java:188)
at akka.dispatch.OnSuccess.internal(Future.scala:212)
at akka.dispatch.japi$CallbackBridge.apply(Future.scala:175)
at akka.dispatch.japi$CallbackBridge.apply(Future.scala:172)
at
scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
at
scala.runtime.AbstractPartialFunction.applyOrElse(AbstractPartialFunction.scala:25)
at
scala.concurrent.Future$$anonfun$onSuccess$1.apply(Future.scala:117)
at
scala.concurrent.Future$$anonfun$onSuccess$1.apply(Future.scala:115)
at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
at
java.util.concurrent.ForkJoinTask$AdaptedRunnable.exec(ForkJoinTask.java:1265)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:334)
at
java.util.concurrent.ForkJoinWorkerThread.execTask(ForkJoinWorkerThread.java:604)
at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:784)
at java.util.concurrent.ForkJoinPool.work(ForkJoinPool.java:646)
at
java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:398)
```
> 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
> Assignee: Chesnay Schepler
>
> 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}
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