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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HIVE-17256) add a notion of a guaranteed task to LLAP
Date Wed, 16 Aug 2017 20:07:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergey Shelukhin resolved HIVE-17256.
-------------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.0

Committed to master. Thanks for the review!
I will write up something in HS2 patch.

> 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
>             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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