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https://issues.apache.org/jira/browse/YARN-6599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16327670#comment-16327670
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Wangda Tan commented on YARN-6599:
----------------------------------
Thanks comments from [~sunilg] / [~asuresh],
For comments from [~sunilg] ,
# Removed all APP_ID_TAG_PREFIX, it should be replaced by
allocationTagIntraApp already.
# The reason is we want to make sure: a. Since this is a new code, we will not
accept SchedulingRequest as it may cause damages to RM. b. PlacementProcessor
is doing the same thing with a different approach, user needs to enable one of
them to work.
# Currently, intra-app anti-affinity is not mutual, which means if
SchedulRequest_A (with allocation tag x) want to anti-affinity to allocation
tags=y, the other SchedulingRequest_B (with allocation tag y) need explicitly
specify anti-affinity to allocation tag=x.
# Since this involves PlacementProcessor, let's move the change to a different
Jira.
For comments from [~asuresh] ,
As we discussed offline, 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}
Let's move it to a separate Jira.
Attached ver.11 patch with changes mentioned.
> 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-6592.011.patch,
> YARN-6599-YARN-6592.wip.002.patch, YARN-6599.poc.001.patch
>
>
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