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https://issues.apache.org/jira/browse/HIVE-17256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16139575#comment-16139575
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Lefty Leverenz commented on HIVE-17256:
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Okay, I added a TODOC3.0 label. Thanks.
> add a notion of a guaranteed task to LLAP
> -----------------------------------------
>
> Key: HIVE-17256
> URL: https://issues.apache.org/jira/browse/HIVE-17256
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Labels: TODOC3.0
> Fix For: 3.0.0
>
> Attachments: HIVE-17256.01.patch, HIVE-17256.patch
>
>
> Tasks are basically on two levels, guaranteed and speculative, with
> speculative being the default. As long as noone uses the new flag, the tasks
> behave the same.
> All the tasks that do have the flag also behave the same with regard to each
> other.
> The difference is that a guaranteed task is always higher priority, and
> preempts, a speculative task.
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