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https://issues.apache.org/jira/browse/YARN-2868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14288431#comment-14288431
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Anubhav Dhoot commented on YARN-2868:
-------------------------------------

volatile cannot be used for thread synchronization instead of AtomicLong. Lets 
revert those changes back to previous patch.

> Add metric for initial container launch time
> --------------------------------------------
>
>                 Key: YARN-2868
>                 URL: https://issues.apache.org/jira/browse/YARN-2868
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Ray Chiang
>            Assignee: Ray Chiang
>              Labels: metrics, supportability
>         Attachments: YARN-2868-01.patch, YARN-2868.002.patch, 
> YARN-2868.003.patch, YARN-2868.004.patch, YARN-2868.005.patch, 
> YARN-2868.006.patch
>
>
> Add a metric to measure the latency between "starting container allocation" 
> and "first container actually allocated".



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