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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2997) NM keeps sending finished containers to RM until app is finished
Date Wed, 31 Dec 2014 00:06:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-2997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14261682#comment-14261682
] 

Jian He commented on YARN-2997:
-------------------------------

bq.  add code to identify them duplicates and then ignore.
I think it is now ignored. perhaps we should clarify the logging and move it to debug level.

> NM keeps sending finished containers to RM until app is finished
> ----------------------------------------------------------------
>
>                 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
>         Attachments: 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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