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https://issues.apache.org/jira/browse/YARN-9464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16812993#comment-16812993
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Prabhu Joseph commented on YARN-9464:
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[~tangzhankun] If you are okay, I will work on this.
> Support "Pending Resource" metrics in RM's RESTful API
> ------------------------------------------------------
>
> Key: YARN-9464
> URL: https://issues.apache.org/jira/browse/YARN-9464
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Zhankun Tang
> Priority: Major
>
> Knowing only the "available", "used" resource is not enough for YARN
> management tools like auto-scaler. It would be helpful to diagnose the
> cluster resource utilization if it gets "Pending Resource" from RM RESTful
> APIs. In a certain extent, it represents how starving the applications are.
> Initially, we can add "pending resource" information in below two RM REST
> APIs:
> {code:java}
> RMnode:port/ws/v1/cluster/metrics
> RMnode:port/ws/v1/cluster/metrics/nodes
> {code}
>
>
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