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From "Konstantinos Karanasos (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7682) Expose canAssign method in the PlacementConstraintManager
Date Tue, 26 Dec 2017 22:05:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16304038#comment-16304038
] 

Konstantinos Karanasos commented on YARN-7682:
----------------------------------------------

bq. Cool. What do you think about putting method in the PlacementConstraints utility class
that we already have for creating Placement Constraints ?
I think this makes sense.

> Expose canAssign method in the PlacementConstraintManager
> ---------------------------------------------------------
>
>                 Key: YARN-7682
>                 URL: https://issues.apache.org/jira/browse/YARN-7682
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Arun Suresh
>            Assignee: Panagiotis Garefalakis
>         Attachments: YARN-7682.wip.patch
>
>
> As per discussion in YARN-7613. Lets expose {{canAssign}} method in the PlacementConstraintManager
that takes a sourceTags, applicationId, SchedulerNode and AllocationTagsManager and returns
true if constraints are not violated by placing the container on the node.
> I prefer not passing in the SchedulingRequest, since it can have > 1 numAllocations.
We want this api to be called for single allocations.



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