John Doe created MAPREDUCE-7483:
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Summary: getTask() can cause a dead lock
Key: MAPREDUCE-7483
URL: https://issues.apache.org/jira/browse/MAPREDUCE-7483
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2
Affects Versions: 2.0.0-alpha
Reporter: John Doe
Fix For: 0.23.0
If unregister() happens before getTask() in TaskAttemptListenerImpl, the
element in jvmIDToActiveAttemptMap can be already removed by unregister() and
getTask can cause a deadlock.
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