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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5262) Optimize sending RMNodeFinishedContainersPulledByAMEvent for every AM heartbeat
Date Mon, 27 Jun 2016 22:50:57 GMT

    [ https://issues.apache.org/jira/browse/YARN-5262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15351995#comment-15351995
] 

Jian He commented on YARN-5262:
-------------------------------

lgtm,  good findings !

> Optimize sending RMNodeFinishedContainersPulledByAMEvent for every AM heartbeat
> -------------------------------------------------------------------------------
>
>                 Key: YARN-5262
>                 URL: https://issues.apache.org/jira/browse/YARN-5262
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Rohith Sharma K S
>            Assignee: Rohith Sharma K S
>         Attachments: 0001-YARN-5262.patch, 0002-YARN-5262.patch
>
>
> It is observed that RM triggers an one event for every ApplicationMaster#allocate request
in the following trace. This is not necessarily required and it can be optimized such that
send only if any containers are there to acknowledge to NodeManager. 
> {code}
> 	RMAppAttemptImpl.sendFinishedContainersToNM() line: 1871	
> 	RMAppAttemptImpl.pullJustFinishedContainers() line: 805	
> 	ApplicationMasterService.allocate(AllocateRequest) line: 567
> {code}



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