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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HIVE-18326) LLAP Tez scheduler - only preempt tasks if there's a dependency between them
Date Thu, 21 Dec 2017 22:25:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16300650#comment-16300650
] 

Sergey Shelukhin edited comment on HIVE-18326 at 12/21/17 10:24 PM:
--------------------------------------------------------------------

A patch. I didn't have time to test it cause I have to run an errand now :) It does compile.
 WIll test later :)
[~ewohlstadter]  can you take a look?
[~sseth] [~gopalv]  I'd also need a binding plus-one, or you could even review :P


was (Author: sershe):
A patch. I didn't have time to test it cause I have to run an errand now :) It does compile.
[~ewohlstadter]  can you take a look?
[~sseth] [~gopalv]  I'd also need a binding plus-one, or you could even review :P

> 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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