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From "Amithsha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-7123) AM Failed with Communication error to RM
Date Tue, 17 Jul 2018 04:55:00 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-7123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16546017#comment-16546017
] 

Amithsha commented on MAPREDUCE-7123:
-------------------------------------

[~jlowe], [~wangda] 

> AM Failed with Communication error to RM
> ----------------------------------------
>
>                 Key: MAPREDUCE-7123
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7123
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 2.9.0
>            Reporter: Amithsha
>            Priority: Major
>
> During the restart of nodemanagers in 300 node cluster some jobs failed with the following
exceptions.
> But the nodes where the AM launched is not the part of cluster.
> FATAL [AsyncDispatcher event handler] org.apache.hadoop.yarn.event.AsyncDispatcher: Error
in dispatcher thread java.lang.NullPointerException at org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl$UpdatedNodesTransition.transition(JobImpl.java:2146)
at org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl$UpdatedNodesTransition.transition(JobImpl.java:2139)
at org.apache.hadoop.yarn.state.StateMachineFactory$SingleInternalArc.doTransition(StateMachineFactory.java:362)
at org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
at org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:46)
at org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:448)
at org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl.handle(JobImpl.java:998) at org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl.handle(JobImpl.java:138)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$JobEventDispatcher.handle(MRAppMaster.java:1346)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$JobEventDispatcher.handle(MRAppMaster.java:1342)
at org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:183) at org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:109)
at java.lang.Thread.run(Thread.java:745) 2018-07-14 12:34:53,425 ERROR [RMCommunicator Allocator]
org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator: ERROR IN CONTACTING RM. java.lang.NullPointerException
at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.handleUpdatedNodes(RMContainerAllocator.java:875)
at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.getResources(RMContainerAllocator.java:776)
at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.heartbeat(RMContainerAllocator.java:256)
at org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator$AllocatorRunnable.run(RMCommunicator.java:281)
at java.lang.Thread.run(Thread.java:745) 2018-07-14 12:34:53,427 INFO [AsyncDispatcher ShutDown
handler] org.apache.hadoop.yarn.event.AsyncDispatcher: Exiting, bbye..



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