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https://issues.apache.org/jira/browse/TEZ-3102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15159835#comment-15159835
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Bikas Saha commented on TEZ-3102:
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+1.
I think testTaskSucceedAndRetroActiveFailure() should be covering the new code
changes in the success attempt code path. In the small chance that its not,
would you please update the test. Thanks!
> Fetch failure of a speculated task causes job hang
> --------------------------------------------------
>
> Key: TEZ-3102
> URL: https://issues.apache.org/jira/browse/TEZ-3102
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.7.0
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Priority: Critical
> Attachments: TEZ-3102.001.patch, TEZ-3102.002.patch
>
>
> If a task speculates then succeeds, one task will be marked successful and
> the other killed. Then if the task retroactively fails due to fetch failures
> the Tez AM will fail to reschedule another task. This results in a hung job.
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