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https://issues.apache.org/jira/browse/TEZ-3897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16378845#comment-16378845
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Jonathan Eagles commented on TEZ-3897:
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[~jlowe], can you please review this patch adding preemption to local mode?
> Tez Local Mode hang for vertices with broadcast input
> -----------------------------------------------------
>
> Key: TEZ-3897
> URL: https://issues.apache.org/jira/browse/TEZ-3897
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Jonathan Eagles
> Assignee: Jonathan Eagles
> Priority: Major
> Attachments: TEZ-3897.001.patch
>
>
> Broadcast edges are not taken into consideration for slow-start edges so
> downstream tasks in local mode can start before upstream tasks. Without
> preemption in the scheduler, there will be a hang.
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