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https://issues.apache.org/jira/browse/YARN-3481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14503333#comment-14503333
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Vinod Kumar Vavilapalli commented on YARN-3481:
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We should decouple the records exchanged between servers from the ones used by 
the users. Tying them together inhibits decoupled evolution.

> Report NM aggregated container resource utilization in heartbeat
> ----------------------------------------------------------------
>
>                 Key: YARN-3481
>                 URL: https://issues.apache.org/jira/browse/YARN-3481
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager, resourcemanager
>    Affects Versions: 2.7.0
>            Reporter: Inigo Goiri
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> To allow the RM take better scheduling decisions, it should be aware of the 
> actual utilization of the containers. The NM would aggregate the 
> ContainerMetrics and report it in every heartbeat.
> Related to YARN-1012 but aggregated to reduce the heartbeat overhead.



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