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https://issues.apache.org/jira/browse/YUNIKORN-2840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17876912#comment-17876912
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Tzu-Hua Lan commented on YUNIKORN-2840:
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Hi, would like to take this issue. Thank you.
> sortQueues: fair max performance and correctness change
> -------------------------------------------------------
>
> Key: YUNIKORN-2840
> URL: https://issues.apache.org/jira/browse/YUNIKORN-2840
> Project: Apache YuniKorn
> Issue Type: Improvement
> Components: core - scheduler
> Reporter: Wilfred Spiegelenburg
> Priority: Major
>
> In YUNIKORN-2678 the fair queue sorting was improved to take guaranteed quota
> into account correctly. During the review there were two minor points left
> over that would need improving:
> * performance
> * correctness on change
> Currently {{GetFairMaxResource()}} gets called for each child this does a
> recursive call back up the queue hierarchy. This is a performance loss
> specially when sorting a deep hierarchy or a larger number of children.
> The parent details for a real fair comparison between the children should
> also not change. When they do, as in the current implementation, two children
> might use different inputs when sorted.
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