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https://issues.apache.org/jira/browse/YARN-3967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mit Desai reassigned YARN-3967:
-------------------------------

    Assignee: Mit Desai

> Fetch the application report from the AHS if the RM does not know about it
> --------------------------------------------------------------------------
>
>                 Key: YARN-3967
>                 URL: https://issues.apache.org/jira/browse/YARN-3967
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.1
>            Reporter: Mit Desai
>            Assignee: Mit Desai
>
> If the application history service has been enabled and RM has forgotten 
> anout an application, try and fetch the app report form the AHS.
> On larger clusters, the RM can forget about the applications in about 30 
> minutes. The proxy url generated during the job submission will try to fetch 
> the app report from the RM and will fail to get anything from there. If the 
> app is not found in the RM, we will need to get the application report from 
> the Application History Server  (if it is enabled) to see if we can get any 
> information on that application before throwing an exception.



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