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https://issues.apache.org/jira/browse/YARN-2997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jian He updated YARN-2997:
--------------------------
    Summary: NM keeps sending already-sent completed containers to RM until 
containers are removed from context  (was: NM keeps sending already-sent 
completed containers to RM until containers are acked)

> NM keeps sending already-sent completed containers to RM until containers are 
> removed from context
> --------------------------------------------------------------------------------------------------
>
>                 Key: YARN-2997
>                 URL: https://issues.apache.org/jira/browse/YARN-2997
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.6.0
>            Reporter: Chengbing Liu
>            Assignee: Chengbing Liu
>         Attachments: YARN-2997.2.patch, YARN-2997.3.patch, YARN-2997.4.patch, 
> YARN-2997.5.patch, YARN-2997.patch
>
>
> We have seen in RM log a lot of
> {quote}
> INFO 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: 
> Null container completed...
> {quote}
> It is caused by NM sending completed containers repeatedly until the app is 
> finished. On the RM side, the container is already released, hence 
> {{getRMContainer}} returns null.



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