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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4889) AM should have a diagnostics message for invalid state transitions
Date Wed, 19 Dec 2012 02:26:13 GMT
Jason Lowe created MAPREDUCE-4889:
-------------------------------------

             Summary: AM should have a diagnostics message for invalid state transitions
                 Key: MAPREDUCE-4889
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4889
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mr-am
    Affects Versions: 0.23.5, 2.0.2-alpha
            Reporter: Jason Lowe


When the ApplicationMaster encounters an invalid state transition in one of its many state
machines (JobImpl, TaskImpl, TaskAttemptImpl, etc.) the job will fail with the ERROR state
but the diagnostics string doesn't have any information about the failure.  The diagnostics
string should contain a message indicating the job is failing because of an invalid state
transition and, preferably, details on the nature of the internal error.

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