[jira] [Created] (MAPREDUCE-5956) MapReduce AM should not

["Vinod Kumar Vavilapalli (JIRA)" <ji...@apache.org>]

Vinod Kumar Vavilapalli created MAPREDUCE-5956:
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             Summary: MapReduce AM should not 
                 Key: MAPREDUCE-5956
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5956
             Project: Hadoop Map/Reduce
          Issue Type: Sub-task
            Reporter: Vinod Kumar Vavilapalli
            Assignee: Vinod Kumar Vavilapalli
            Priority: Blocker


Found this while reviewing YARN-2074. The problem is that after YARN-2074, we don't count AM preemption towards AM failures on RM side, but MapReduce AM itself checks the attempt id against the max-attempt count to determine if this is the last attempt.
{code}
    public void computeIsLastAMRetry() {
      isLastAMRetry = appAttemptID.getAttemptId() >= maxAppAttempts;
    }
{code}
This causes issues w.r.t deletion of staging directory etc..



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