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https://issues.apache.org/jira/browse/YARN-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16308305#comment-16308305
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Arun Suresh commented on YARN-7682:
-----------------------------------
Thanks for the update [~pgaref]
It is starting to look neat now :)
Minor nits:
* Looks like changes in PlacementConstratintManager and
MemoryPlacementConstratintManager are not needed.
* The tests look good - but can you put a brief comment describing the intent
of the placementConstratint and expectation especially for the
testComplexPlacement case.
* In addition to the testProcessor, maybe we can add one more test class
-TestPlacementConstraintsUtil, which just tests {{canSatisfyConstraints}} in
isolation ? That way, we can add more complex constraint tests in future if
needed too.
+1 pending the above. [~kkaranasos], thoughts ?
> 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.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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