Mit Desai created YARN-3967:
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Summary: 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
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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