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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-165) RM should point tracking URL to RM web page for app when AM fails
Date Wed, 17 Oct 2012 19:32:03 GMT
Jason Lowe created YARN-165:

             Summary: RM should point tracking URL to RM web page for app when AM fails
                 Key: YARN-165
                 URL: https://issues.apache.org/jira/browse/YARN-165
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: resourcemanager
    Affects Versions: 2.0.3-alpha, 0.23.5
            Reporter: Jason Lowe

Currently when an ApplicationMaster fails the ResourceManager is updating the tracking URL
to an empty string, see RMAppAttemptImpl.ContainerFinishedTransition.  Unfortunately when
the client attempts to follow the proxy URL it results in a web page showing an HTTP 500 error
and an ugly backtrace because "http://" isn't a very helpful tracking URL.

It would be much more helpful if the proxy URL redirected to the RM webapp page for the specific
application.  That page shows the various AM attempts and pointers to their logs which will
be useful for debugging the problems that caused the AM attempts to fail.

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