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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7784) Cluster metrics is inaccurate when placement constraint is enabled
Date Fri, 26 Jan 2018 02:16:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16340465#comment-16340465

Arun Suresh commented on YARN-7784:

[~cheersyang], you are right.
I've actually included the fix as par of YARN-7819. Check [this|https://issues.apache.org/jira/secure/attachment/12907783/YARN-7819-YARN-6592.001.patch#file-1]
Maybe I should pull it out and post it here. Thoughts ?

> Cluster metrics is inaccurate when placement constraint is enabled
> ------------------------------------------------------------------
>                 Key: YARN-7784
>                 URL: https://issues.apache.org/jira/browse/YARN-7784
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: metrics, RM
>            Reporter: Weiwei Yang
>            Priority: Major
> Reproducing steps
>  # Setup a cluster and sets {{yarn.resourcemanager.placement-constraints.enabled}} to
>  # Submit a DS job with placement constraint, such as {{-placement_spec foo=2,NOTIN,NODE,foo}}
>  # Check cluster metrics from http://<RM_ADDRESS>/cluster/apps
> when job is running, {{Containers Running}}, {{Memory Used}} and {{VCore Used}} were
not updated (except AM), metrics from containers allocated by the PlacementProcessor were
not accumulated to the cluster metrics; however when job is done, the resource were deducted.
Then UI displays like following:
>  * Containers Running: -2
>  * Memory Used: -400
>  * VCores Used: -2
> Looks like {{AppSchedulingInfo#updateMetricsForAllocatedContainer}} was not called when
allocating a container.

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