handleTaskAttemptCompletion() called twice for same task attempt from
KillWaitAttemptKilledTransition & AttemptKilledTransition
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Key: MAPREDUCE-3985
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3985
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mr-am
Affects Versions: 0.23.0
Reporter: Bikas Saha
Assignee: Bikas Saha
Fix For: 0.23.2
TaskImpl state changes to KILL_WAIT after an AttemptKilledTransition. When the
attempt reports that it has actually been killed then KILL_WAIT transitions out
via the KillWaitAttemptKilledTransition. Both these transitions send task
completion events to Job with the same Killed state.
The handler simply puts them in a list and so nothing bad has happened till now.
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