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https://issues.apache.org/jira/browse/YARN-2802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14212992#comment-14212992
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zhihai xu commented on YARN-2802:
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Hi [~jianhe] and [~vinodkv],

Could you review the patch? Since this patch change the Capacity Scheduler.
It passed the Hadoop QA.

thanks
zhihai

> add AM container launch and register delay metrics in QueueMetrics to help 
> diagnose performance issue.
> ------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-2802
>                 URL: https://issues.apache.org/jira/browse/YARN-2802
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.5.0
>            Reporter: zhihai xu
>            Assignee: zhihai xu
>         Attachments: YARN-2802.000.patch, YARN-2802.001.patch, 
> YARN-2802.002.patch
>
>
> add AM container launch and register delay metrics in QueueMetrics to help 
> diagnose performance issue.
> Added two metrics in QueueMetrics:
> aMLaunchDelay: the time spent from sending event AMLauncherEventType.LAUNCH 
> to receiving event RMAppAttemptEventType.LAUNCHED in RMAppAttemptImpl.
> aMRegisterDelay: the time waiting from receiving event 
> RMAppAttemptEventType.LAUNCHED to receiving event 
> RMAppAttemptEventType.REGISTERED(ApplicationMasterService#registerApplicationMaster)
>  in RMAppAttemptImpl.



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