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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7920) Cleanup configuration of PlacementConstraints
Date Thu, 15 Feb 2018 08:46:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16365246#comment-16365246

Wangda Tan commented on YARN-7920:

Attached ver.6 patch for the ASF warning, failed test case is not related, which is tracked
by YARN-7918.

> Cleanup configuration of PlacementConstraints
> ---------------------------------------------
>                 Key: YARN-7920
>                 URL: https://issues.apache.org/jira/browse/YARN-7920
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>            Priority: Blocker
>         Attachments: YARN-7920.001.patch, YARN-7920.002.patch, YARN-7920.003.patch, YARN-7920.004.patch,
YARN-7920.005.patch, YARN-7920.006.patch
> Currently it is very confusing to have the two configs in two different files (yarn-site.xml
and capacity-scheduler.xml). 
> Maybe a better approach is: we can delete the scheduling-request.allowed in CS, and update
placement-constraints configs in yarn-site.xml a bit: 
> - Remove placement-constraints.enabled, and add a new placement-constraints.handler,
by default is none, and other acceptable values are a. external-processor (since algorithm
is too generic to me), b. scheduler. 
> - And add a new PlacementProcessor just to pass SchedulingRequest to scheduler without
any modifications.

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