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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-5776) TaskAttempt should honor TA_KILL event when TA is in SUCCESS_CONTAINER_CLEANUP state
Date Tue, 04 Mar 2014 18:55:20 GMT
Ming Ma created MAPREDUCE-5776:
----------------------------------

             Summary: TaskAttempt should honor TA_KILL event when TA is in SUCCESS_CONTAINER_CLEANUP
state
                 Key: MAPREDUCE-5776
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5776
             Project: Hadoop Map/Reduce
          Issue Type: Bug
            Reporter: Ming Ma


In most states that a TaskAttempt goes through, such as ASSIGNED, RUNNING, SUCCEEDED etc.
If a TA receives TA_KILL, the state will transit to KILLED (if the TA is in SUCCEEDED state,
it depends on if it is a reducer task).

However, If the TA is in SUCCESS_CONTAINER_CLEANUP state, TA just ignores TA_KILL. Later on,
SUCCESS_CONTAINER_CLEANUP will move to SUCCEEDED state after the container is cleaned up.
So it is possible after a client issue a kill request, the TA will eventually be in SUCCEEDED
state. It isn't a major issue. But from consistency's point of view, it is better if TA_KILL
is handled in a similar way as how it is handled when TA is in SUCCEEDED state.



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