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From "Wilfred Spiegelenburg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8967) Change FairScheduler to use PlacementRule interface
Date Fri, 22 Mar 2019 02:35:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16798645#comment-16798645
] 

Wilfred Spiegelenburg commented on YARN-8967:
---------------------------------------------

Junit test failure is not related.
The checkstyle is from this patch but it makes the internal class RuleMap so much simpler
that I propose we leave it like it is. [~yufeigu]: the checkstyle was why I introduced the
getters etc which is the basis for your comment number 5) before.

> Change FairScheduler to use PlacementRule interface
> ---------------------------------------------------
>
>                 Key: YARN-8967
>                 URL: https://issues.apache.org/jira/browse/YARN-8967
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacityscheduler, fairscheduler
>            Reporter: Wilfred Spiegelenburg
>            Assignee: Wilfred Spiegelenburg
>            Priority: Major
>         Attachments: YARN-8967.001.patch, YARN-8967.002.patch, YARN-8967.003.patch, YARN-8967.004.patch,
YARN-8967.005.patch, YARN-8967.006.patch, YARN-8967.007.patch, YARN-8967.008.patch, YARN-8967.009.patch,
YARN-8967.010.patch
>
>
> The PlacementRule interface was introduced to be used by all schedulers as per YARN-3635.
The CapacityScheduler is using it but the FairScheduler is not and is using its own rule definition.
> YARN-8948 cleans up the implementation and removes the CS references which should allow
this change to go through.
> This would be the first step in using one placement rule engine for both schedulers.



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