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From "Konstantinos Karanasos (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7763) Allow Constraints specified in the SchedulingRequest to override application level constraints
Date Fri, 19 Jan 2018 09:22:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-7763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331979#comment-16331979
] 

Konstantinos Karanasos commented on YARN-7763:
----------------------------------------------

Thanks [~cheersyang]. Only one minor thing: the instanceof check has to be done after we call
the transformer. If we do it before, it might be a CardinalityConstraint or a TargetConstraint,
all of which get transformed to a SingleConstraint. So we have to do it just right before
the cast. Sorry for not clarifying it properly.

> Allow Constraints specified in the SchedulingRequest to override application level constraints
> ----------------------------------------------------------------------------------------------
>
>                 Key: YARN-7763
>                 URL: https://issues.apache.org/jira/browse/YARN-7763
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Wangda Tan
>            Assignee: Weiwei Yang
>            Priority: Blocker
>         Attachments: YARN-7763-YARN-6592.001.patch, YARN-7763-YARN-6592.002.patch, YARN-7763-YARN-6592.003.patch,
YARN-7763-YARN-6592.004.patch
>
>
> As I mentioned on YARN-6599, we will add SchedulingRequest as part of the PlacementConstraintUtil
method and both of processor/scheduler implementation will use the same logic. The logic looks
like:
> {code:java}
> PlacementConstraint pc = schedulingRequest.getPlacementConstraint();
> If (pc == null) {
>   pc = PlacementConstraintMgr.getPlacementConstraint(schedulingRequest.getAllocationTags());
> }
> // Do placement constraint match ...{code}



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