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https://issues.apache.org/jira/browse/YARN-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573184#comment-13573184
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Vinod Kumar Vavilapalli commented on YARN-236:
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I agree that the null check can hit before the app starts where redirecting is
useful.
But for crashing AMs: Shouldn't YARN-165 have already fixed the original
tracking url to point to RM web age already in case of crashing AMs? I just
checked the patch and seems so.
> RM should point tracking URL to RM web page when app fails to start
> -------------------------------------------------------------------
>
> Key: YARN-236
> URL: https://issues.apache.org/jira/browse/YARN-236
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 0.23.4
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Attachments: YARN-236.patch
>
>
> Similar to YARN-165, the RM should redirect the tracking URL to the specific
> app page on the RM web UI when the application fails to start. For example,
> if the AM completely fails to start due to bad AM config or bad job config
> like invalid queuename, then the user gets the unhelpful "The requested
> application exited before setting a tracking URL".
> Usually the diagnostic string on the RM app page has something useful, so we
> might as well point there.
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