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https://issues.apache.org/jira/browse/TEZ-3758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16057948#comment-16057948
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Kuhu Shukla commented on TEZ-3758:
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Test failure is unrelated and timed out as the test ran more than a minute. I
have opened TEZ-3768 to track the minor change to the test timeout. [~jeagles],
appreciate any comments/review. Thanks a lot!
> 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
> Attachments: TEZ-3758.001.patch, TEZ-3758.002.patch,
> TEZ-3758.003.patch
>
>
> 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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