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https://issues.apache.org/jira/browse/YARN-2997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14269885#comment-14269885
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Jian He commented on YARN-2997:
-------------------------------
patch looks good to me.
> 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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