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https://issues.apache.org/jira/browse/YARN-2965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14276237#comment-14276237
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Karthik Kambatla commented on YARN-2965:
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[~vinodkv] - from what I understand, Tetris only cares about the resources 
available on the node. I understand this could be (total YARN resources - sum 
of usage of all containers), but don't think the implementation was going for 
that. In any case, I ll follow up and ensure there is no duplication. 

> Enhance Node Managers to monitor and report the resource usage on machines
> --------------------------------------------------------------------------
>
>                 Key: YARN-2965
>                 URL: https://issues.apache.org/jira/browse/YARN-2965
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Robert Grandl
>            Assignee: Robert Grandl
>         Attachments: ddoc_RT.docx
>
>
> This JIRA is about augmenting Node Managers to monitor the resource usage on 
> the machine, aggregates these reports and exposes them to the RM. 



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