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https://issues.apache.org/jira/browse/YARN-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16309217#comment-16309217
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Arun Suresh commented on YARN-7682:
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[~kkaranasos], I understand why it might be better to swap Long::min / max as
the op - and yes, it makses sense, but did not get why we need to assert that
minScopeCardinality <= maxScopeCardinality. Can you give an example perhaps ?
Since those two values are just the max and min cardinally of the set of tags
for that scope at that given moment anyway.
> 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-YARN-6592.001.patch,
> YARN-7682-YARN-6592.002.patch, YARN-7682-YARN-6592.003.patch,
> 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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