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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4711) NPE in NMTimelinePublisher
Date Mon, 22 Feb 2016 14:40:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-4711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15157069#comment-15157069
] 

Naganarasimha G R commented on YARN-4711:
-----------------------------------------

Seems like this is caused due to YARN-3367, Once the Timeline client is closed, exception
is thrown for the sync calls, and hence the AsyncDispatcher receiver in NMTimelinePublisher
receives the exception and the NM goes down. will Further check and confirm.  

> NPE in NMTimelinePublisher
> --------------------------
>
>                 Key: YARN-4711
>                 URL: https://issues.apache.org/jira/browse/YARN-4711
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Naganarasimha G R
>            Assignee: Naganarasimha G R
>            Priority: Critical
>
> While testing the latest 2928 branch came across a NPE which is shutting down the NM
> {code}
> 2016-02-21 23:19:54,078 FATAL org.apache.hadoop.yarn.event.AsyncDispatcher: Error in
dispatcher thread
> java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.nodemanager.timelineservice.NMTimelinePublisher$ContainerEventHandler.handle(NMTimelinePublisher.java:306)
>         at org.apache.hadoop.yarn.server.nodemanager.timelineservice.NMTimelinePublisher$ContainerEventHandler.handle(NMTimelinePublisher.java:296)
>         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)
> {code}
> Seems to be a race condition ...



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