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From "Gunther Hagleitner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12623) Add an option to force allocation of fragments on requested nodes
Date Sat, 19 Dec 2015 00:07:46 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15065022#comment-15065022
] 

Gunther Hagleitner commented on HIVE-12623:
-------------------------------------------

Change and test LGTM +1. Submitted the patch to HiveQA. This add a new config: hive.llap.task.scheduler.locality.delay.
The value is used once at AM startup, which means it's best to change it before starting HS2.

> Add an option to force allocation of fragments on requested nodes
> -----------------------------------------------------------------
>
>                 Key: HIVE-12623
>                 URL: https://issues.apache.org/jira/browse/HIVE-12623
>             Project: Hive
>          Issue Type: Improvement
>          Components: llap
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>         Attachments: HIVE-12623.1.txt, HIVE-12623.1.wip.txt
>
>
> Currently, fragments are sent to random nodes if the requested node does not have capacity.
In certain situations there's more to be gained by sending the fragments to the requested
node only.



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