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https://issues.apache.org/jira/browse/HIVE-18326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16301983#comment-16301983
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Sergey Shelukhin commented on HIVE-18326:
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Hmm, I checked on the cluster and that is actually correct... DAG info is null
everywhere including start call. That is not great cause we'd need sync to init
this elsewhere.
> LLAP Tez scheduler - only preempt tasks if there's a dependency between them
> ----------------------------------------------------------------------------
>
> Key: HIVE-18326
> URL: https://issues.apache.org/jira/browse/HIVE-18326
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-18326.patch
>
>
> It is currently possible for e.g. two sides of a union (or a join for that
> matter) to have slightly different priorities. We don't want to preempt
> running tasks on one side in favor of the other side in such cases.
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