Kuhu Shukla created TEZ-3758:
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Summary: Vertex can hang in RUNNING state when two task attempts
finish very closely and have retroactive failures
Key: TEZ-3758
URL: https://issues.apache.org/jira/browse/TEZ-3758
Project: Apache Tez
Issue Type: Bug
Affects Versions: 0.7.1, 0.9.0
Reporter: Kuhu Shukla
Assignee: Kuhu Shukla
A vertex's count of what tasks are done can go off in a case where two task
attempts finish very closely, say within a millisecond of each other. We had a
case where this task, which was marked successful, never scheduled another
attempt upon getting a retroactive failure since it thought it had one
uncompleted task attempt already. This is because the attempt that finished 1
ms later transitioned to SUCCEEDED but we don't take any action on the
taskAttempStatus data structure and it stays false. This JIRA will attempt to
solve that race.
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