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https://issues.apache.org/jira/browse/YUNIKORN-790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17598602#comment-17598602
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Rainie Li commented on YUNIKORN-790:
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hi [~wilfreds] Thanks for providing feedback last week.
I merged two PRs into [https://github.com/apache/yunikorn-core/pull/429] Please
review it. I added end to end load test result into PR. It's working now :)
This time I added two major changes:
# Besides {*}tryAllocate{*}, state machine gets updated by
*tryReservedAllocate* as well. That's why I added same IfCanRun then increase
allocatingAcceptedApps number in both places.
# I am using *map* instead of int to track allocatingAcceptedApps, since both
tryAllocate and tryReservedAllocate will update this number asynchronously. To
avoid same application gets added or deleted twice, we need to use map. It's
just a set. I set appID as key, {} as value, since golang doesn't' have set.
Feel free to let me know if you have any question or suggestion.
> Implement MaxApplications enforcement
> -------------------------------------
>
> Key: YUNIKORN-790
> URL: https://issues.apache.org/jira/browse/YUNIKORN-790
> Project: Apache YuniKorn
> Issue Type: New Feature
> Components: core - scheduler
> Reporter: Wilfred Spiegelenburg
> Assignee: Rainie Li
> Priority: Major
> Labels: pull-request-available
>
> Queues have an option to set the MaxApplications that can run in a queue.
> There is currently no code in the scheduler that checks this setting.
> As a new feature we should add the enforcement for this setting:
> * enforce the setting on a leaf queue
> * enforce the setting on a parent, the apps running in a parent queue is
> defined as the sum of all the apps running in all leaf queues of the parent.
> As a side note from a config check: we need to make sure that the parent
> setting cannot be lower than any of the child queues it has. We _must not_
> enforce that the parent setting must be larger than sum of all leafs.
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