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https://issues.apache.org/jira/browse/YARN-9879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17009845#comment-17009845
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Peter Bacsko commented on YARN-9879:
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Alternatively, we can have {{Map<String, CSQueue> fullToCSQueue}} and
{{Map<String, CSQueue> leafToCSQueue}}, so we can avoid the double lookup (not
that it's really that expensive).
Also it's probably better to have {{Map<String, Integer>}} to check whether a
leaf is unique. When we add/remove a queue, we increase/decrease a counter, so
upon removal, we know whether it has became unique or not.
> Allow multiple leaf queues with the same name in CS
> ---------------------------------------------------
>
> Key: YARN-9879
> URL: https://issues.apache.org/jira/browse/YARN-9879
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Gergely Pollak
> Assignee: Gergely Pollak
> Priority: Major
> Attachments: DesignDoc_v1.pdf
>
>
> Currently the leaf queue's name must be unique regardless of its position in
> the queue hierarchy.
> Design doc and first proposal is being made, I'll attach it as soon as it's
> done.
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