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https://issues.apache.org/jira/browse/YARN-2965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14247469#comment-14247469
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Karthik Kambatla commented on YARN-2965:
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Super useful. The design makes sense. Relaying the utilization information
through NM-RM heartbeat should be okay.
bq. potential timing overhead in waiting for RT Client to provide a ResourceObj
on every heartbeat invocation, which might be expensive if the RT Client
implementation is slow
The NM heartbeat should just send the latest update it has from the RTClient
without waiting.
> Enhance Node Managers to monitor and report the resource usage on the 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
> 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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