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From "Chengbing Liu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-2997) NM keeps sending finished containers to RM until app is finished
Date Sun, 04 Jan 2015 07:54:34 GMT

     [ https://issues.apache.org/jira/browse/YARN-2997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chengbing Liu updated YARN-2997:
--------------------------------
    Attachment: YARN-2997.3.patch

Updated patch:
* fix potential pendingContainersToRemove leak.
* remove unnecessary {{pendingCompletedContainers.clear();}} and add clearPendingCompletedContainers()
for testing purpose only.
* Add comments for modified tests.
* Switch order of {{assertEquals}}. Expected value should come first to prevent confusions.

> 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-2997.2.patch, YARN-2997.3.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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