Ming Ma created MAPREDUCE-5776:
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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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