[jira] [Created] (FLINK-6440) Noisy logs from metric fetcher

["Stephan Ewen (JIRA)" <ji...@apache.org>]

Stephan Ewen created FLINK-6440:
-----------------------------------

             Summary: Noisy logs from metric fetcher
                 Key: FLINK-6440
                 URL: https://issues.apache.org/jira/browse/FLINK-6440
             Project: Flink
          Issue Type: Bug
          Components: Webfrontend
    Affects Versions: 1.3.0
            Reporter: Stephan Ewen
            Priority: Critical
             Fix For: 1.3.0


In cases where TaskManagers fail, the web frontend in the Job Manager starts logging the exception below every few seconds.

I labeled this as critical, because it actually makes debugging in such a situation complicated through a log that is flooded with noise.

{code}
2017-05-03 19:37:07,823 WARN  org.apache.flink.runtime.webmonitor.metrics.MetricFetcher     - Fetching metrics failed.
akka.pattern.AskTimeoutException: Ask timed out on [Actor[akka.tcp://flink@herman:52175/user/MetricQueryService_136f717a6b91e248282cb2937d22088c]] 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)
{code}



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