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From "Tao Yang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-9567) Add diagnostics for outstanding resource requests on app attempts page
Date Mon, 20 May 2019 12:49:00 GMT
Tao Yang created YARN-9567:
------------------------------

             Summary: 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
         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 risk.

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!

(2) After requesting the application activities REST API, we can see diagnostics now.

 



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