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https://issues.apache.org/jira/browse/YARN-10124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17034266#comment-17034266
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Wilfred Spiegelenburg commented on YARN-10124:
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Based on what I read here is that you expect a stopped queue to not have a
capacity and thus return 0 when calculating the correct distributing. If that
is the use case then why can't we implement that. In other words: why not turn
this around, only return or take into account the capacity of a queue when it
is not in a stopped state? So you return 0 for all stopped queues. You do not
have to go further than that.
No need to (re)calculate below the parent that is stopped 0 (as that is all
ignored) and turning the queue back on will trigger the existing settings to be
applied again without further changes.
> Remove restriction of ParentQueue capacity zero when childCapacities > 0
> ------------------------------------------------------------------------
>
> Key: YARN-10124
> URL: https://issues.apache.org/jira/browse/YARN-10124
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Affects Versions: 3.3.0
> Reporter: Prabhu Joseph
> Assignee: Prabhu Joseph
> Priority: Major
> Attachments: YARN-10124-001.patch
>
>
> ParentQueue capacity cannot be set to 0 when child capacities > 0. To disable
> a parent queue temporarily, user can only STOP the queue but the capacity of
> the queue cannot be used for other queues. Allowing 0 capacity for parent
> queue will allow user to use the capacity for other queues and also to retain
> the child queue capacity values. (else user has to set all child queue
> capacities to 0)
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