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https://issues.apache.org/jira/browse/YARN-9567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16844506#comment-16844506
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Tan, Wangda commented on YARN-9567:
-----------------------------------
This looks great! Huge thanks to [~Tao Yang] for pushing it! How can user
request activities? Only through REST API? It might be better if we can make it
as part of the UI.
cc: [~akhilpb], [[email protected]]: This might be easier to support in
UI2 than UI1, and users can get a more integrated experience from the new UI.
+ Other folks might be interested: [~vinodkv], [~aiden_zhang], [~jeffreyz],
[~yzhangal], [~liuxun323].
> 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: no_diagnostic_at_first.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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