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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6599) Support rich placement constraints in scheduler
Date Tue, 16 Jan 2018 18:22:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-6599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16327517#comment-16327517
] 

Arun Suresh commented on YARN-6599:
-----------------------------------

Thanks for the update [~leftnoteasy]

I just have couple of minor comments:
As we discussed offline, to maintain consistency with the processor approach, atleast at an
API level, can we do the following: Currently, the processor expects all placement constraints
for the app to sent in the register call. Any placement constraint specified in the SchedulingRequest
should be an override of the constraints specified in the mapping provided in the registerAM
call. The mapping that is sent in the register call is of the form {{Map<Set<String>,
PlaccementConstrint>}}, where the key is a set of allocation tags. Then in the specific
schedulingRequest, we refer to the PlacementConstraint using the allocation tags (The PlacementConstraintsManager
holds the mapping). This means you need to set the allocation tags in the scheduling request.
If the SchedulingRequest contains a PlacementRequest, then it will first replace the mapping
in the PlacementConstraintsManager and then apply the constraints to the SchedulingRequest.

Am +1 after that 


> Support rich placement constraints in scheduler
> -----------------------------------------------
>
>                 Key: YARN-6599
>                 URL: https://issues.apache.org/jira/browse/YARN-6599
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>            Priority: Major
>         Attachments: YARN-6599-YARN-6592.003.patch, YARN-6599-YARN-6592.004.patch, YARN-6599-YARN-6592.005.patch,
YARN-6599-YARN-6592.006.patch, YARN-6599-YARN-6592.007.patch, YARN-6599-YARN-6592.008.patch,
YARN-6599-YARN-6592.009.patch, YARN-6599-YARN-6592.010.patch, YARN-6599-YARN-6592.wip.002.patch,
YARN-6599.poc.001.patch
>
>




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