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https://issues.apache.org/jira/browse/YARN-9185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16737830#comment-16737830
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Zac Zhou commented on YARN-9185:
--------------------------------

[~eyang]

Thanks a lot for fixing it~

> TimelineServiceV2Publisher throws NPE when app is finished before container 
> metrics updated
> -------------------------------------------------------------------------------------------
>
>                 Key: YARN-9185
>                 URL: https://issues.apache.org/jira/browse/YARN-9185
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Zac Zhou
>            Assignee: Zac Zhou
>            Priority: Major
>
> When the dominant component feature is enabled. Resourcemanager throws NPE 
> after the app is finished.
> The stack is as follows:
> 2019-01-08 19:54:48,788 FATAL org.apache.hadoop.yarn.event.AsyncDispatcher: 
> Error in dispatcher thread
> java.lang.NullPointerException
>  at 
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TimelineServiceV2Publisher.putEntity(Timel
> ineServiceV2Publisher.java:459)
>  at 
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TimelineServiceV2Publisher.access$100(Time
> lineServiceV2Publisher.java:73)
>  at 
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TimelineServiceV2Publisher$TimelineV2Event
> Handler.handle(TimelineServiceV2Publisher.java:494)
>  at 
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TimelineServiceV2Publisher$TimelineV2Event
> Handler.handle(TimelineServiceV2Publisher.java:483)
>  at 
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:197)
>  at 
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:126)
>  at java.lang.Thread.run(Thread.java:745)



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