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https://issues.apache.org/jira/browse/TEZ-3893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16364346#comment-16364346
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Jason Lowe commented on TEZ-3893:
---------------------------------

Thanks for updating the patch!

+1 lgtm.  Committing this.


> Tez Local Mode can hang for cases
> ---------------------------------
>
>                 Key: TEZ-3893
>                 URL: https://issues.apache.org/jira/browse/TEZ-3893
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Jonathan Eagles
>            Assignee: Jonathan Eagles
>            Priority: Major
>         Attachments: TEZ-3893.002.patch, TEZ-3893.003.patch, 
> TEZ-3893.004.patch, TEZ-3893.1.patch
>
>
> The scheduler has a race condition where events that notify can be added 
> while the blocking queue is not waiting, but just before waiting. In this 
> case, we can wait forever.



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