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From "Omkar Vinit Joshi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-552) Expose resource metrics as part of YarnClusterMetrics
Date Wed, 29 May 2013 21:06:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13669745#comment-13669745
] 

Omkar Vinit Joshi commented on YARN-552:
----------------------------------------

This is related to YARN-435 .. There are certain things which client and AM both want. It
would be useful if we go ahead and expose the common interfaces in both protocols thereby
we don't need to worry about tokens too.
[see comment|https://issues.apache.org/jira/browse/YARN-435?focusedCommentId=13669570&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13669570]
                
> Expose resource metrics as part of YarnClusterMetrics
> -----------------------------------------------------
>
>                 Key: YARN-552
>                 URL: https://issues.apache.org/jira/browse/YARN-552
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.0.3-alpha
>            Reporter: Harsh J
>            Assignee: Omkar Vinit Joshi
>            Priority: Minor
>
> Right now, the YarnClusterMetrics just has the total number of node managers returned
in it (when queried from a Client -> RM).
> It would be useful to also expose NodeManager resource capacities and scheduler max/min
resource limits over it to allow clients to pre-determine or pre-compute runtime feasibility
without having to request an Application first to get some of this information.
> This does not need to be an incompatible change, and we can continue exposing the same
values as part of the GetNewApplicationResponse too.

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