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Posted to yarn-issues@hadoop.apache.org by "Tan, Wangda (JIRA)" <ji...@apache.org> on 2019/05/21 05:14:00 UTC

[jira] [Commented] (YARN-9567) Add diagnostics for outstanding resource requests on app attempts page

    [ https://issues.apache.org/jira/browse/YARN-9567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16844506#comment-16844506 ] 

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], [~sunil.govind@gmail.com]: 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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