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https://issues.apache.org/jira/browse/YARN-4428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junping Du updated YARN-4428:
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Fix Version/s: 2.8.0
> Redirect RM page to AHS page when AHS turned on and RM page is not available
> ----------------------------------------------------------------------------
>
> Key: YARN-4428
> URL: https://issues.apache.org/jira/browse/YARN-4428
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Chang Li
> Assignee: Chang Li
> Fix For: 2.8.0, 2.7.3, 3.0.0-alpha1
>
> Attachments: YARN-4428.1.2.patch, YARN-4428.1.patch,
> YARN-4428.10.patch, YARN-4428.2.2.patch, YARN-4428.2.patch,
> YARN-4428.3.patch, YARN-4428.3.patch, YARN-4428.4.patch, YARN-4428.5.patch,
> YARN-4428.6.patch, YARN-4428.7.patch, YARN-4428.8.patch,
> YARN-4428.9.test.patch, YARN-4428.branch-2.7.patch
>
>
> When AHS is turned on, if we can't view application in RM page, RM page
> should redirect us to AHS page. For example, when you go to
> cluster/app/application_1, if RM no longer remember the application, we will
> simply get "Failed to read the application application_1", but it will be
> good for RM ui to smartly try to redirect to AHS ui
> /applicationhistory/app/application_1 to see if it's there. The redirect
> usage already exist for logs in nodemanager UI.
> Also, when AHS is enabled, WebAppProxyServlet should redirect to AHS page on
> fall back of RM not remembering the app. YARN-3975 tried to do this only when
> original tracking url is not set. But there are many cases, such as when app
> failed at launch, original tracking url will be set to point to RM page, so
> redirect to AHS page won't work.
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