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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 02:10:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-2997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14261797#comment-14261797
] 

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

bq. The uploaded patch will let the normal heartbeat
The intention was to let NM remove containers from its context only after RM acks it has received
these containers. More context in YARN-1372

> 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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