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https://issues.apache.org/jira/browse/YARN-9567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17029648#comment-17029648
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Tao Yang commented on YARN-9567:
--------------------------------
Thanks [~cheersyang] for the review.
It seems that wrong file was taken as the new patch, some information in
console output: YARN-9567 patch is being downloaded at Mon Feb 3 20:38:28 UTC
2020 from
https://issues.apache.org/jira/secure/attachment/12991343/scheduler-activities-example.png
-> Downloaded
Attached v4 patch (same as v3 patch) to re-trigger the jenkins job.
> Add diagnostics for outstanding resource requests on app attempts page
> ----------------------------------------------------------------------
>
> Key: YARN-9567
> URL: https://issues.apache.org/jira/browse/YARN-9567
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: capacityscheduler
> Reporter: Tao Yang
> Assignee: Tao Yang
> Priority: Major
> Attachments: YARN-9567.001.patch, YARN-9567.002.patch,
> YARN-9567.003.patch, YARN-9567.004.patch, app-activities-example.png,
> image-2019-06-04-17-29-29-368.png, image-2019-06-04-17-31-31-820.png,
> image-2019-06-04-17-58-11-886.png, image-2019-06-14-11-21-41-066.png,
> no_diagnostic_at_first.png, scheduler-activities-example.png,
> show_diagnostics_after_requesting_app_activities_REST_API.png
>
>
> Currently on app attempt page we can see outstanding resource requests, it
> will be helpful for users to know why if we can join diagnostics of this app
> with these.
> Discussed with [~cheersyang], we can passively load diagnostics from cache of
> completed app activities instead of actively triggering which may bring
> uncontrollable risks.
> For example:
> (1) At first we can see no diagnostic in cache if app activities not
> triggered below the outstanding requests.
> !no_diagnostic_at_first.png|width=793,height=248!
> (2) After requesting the application activities REST API, we can see
> diagnostics now.
> !show_diagnostics_after_requesting_app_activities_REST_API.png|width=1046,height=276!
>
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