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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4862) Handle duplicate completed containers in RMNodeImpl
Date Tue, 21 Jun 2016 16:52:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-4862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15342162#comment-15342162
] 

Rohith Sharma K S commented on YARN-4862:
-----------------------------------------

Thanks [~jlowe] for looking into the issue and for the comments on the patch! 

In order to prevent any leak from new set i.e completedContainers, currently I do not see
any other way to do sanity check other than fixing YARN-5279. If any alternatives it can be
achieved, kindly suggest.

> Handle duplicate completed containers in RMNodeImpl
> ---------------------------------------------------
>
>                 Key: YARN-4862
>                 URL: https://issues.apache.org/jira/browse/YARN-4862
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Rohith Sharma K S
>            Assignee: Rohith Sharma K S
>         Attachments: 0001-YARN-4862.patch, 0002-YARN-4862.patch
>
>
> As per [comment|https://issues.apache.org/jira/browse/YARN-4852?focusedCommentId=15209689&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15209689]
from [~sharadag], there should be safe guard for duplicated container status in RMNodeImpl
before creating UpdatedContainerInfo. 
> Or else in heavily loaded cluster where event processing is gradually slow, if any duplicated
container are sent to RM(may be bug in NM also), there is significant impact that RMNodImpl
always create UpdatedContainerInfo for duplicated containers. This result in increase in the
heap memory and causes problem like YARN-4852.
> This is an optimization for issue kind YARN-4852



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