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https://issues.apache.org/jira/browse/YARN-4066?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Johan Gustavsson updated YARN-4066:
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Attachment: YARN-4066-2.patch
> Large number of queues choke fair scheduler
> -------------------------------------------
>
> Key: YARN-4066
> URL: https://issues.apache.org/jira/browse/YARN-4066
> Project: Hadoop YARN
> Issue Type: Bug
> Components: fairscheduler
> Affects Versions: 2.7.1
> Reporter: Johan Gustavsson
> Assignee: Johan Gustavsson
> Attachments: YARN-4066-2.patch, yarn-4066-1.patch
>
>
> Due to synchronization and all the loops performed during queue creation,
> setting a large amount of queues (12000+) will completely choke the
> scheduler. To deal with this some optimization to
> "QueueManager.updateAllocationConfiguration(AllocationConfiguration
> queueConf)" should be done to reduce the amount of unnesecary loops. The
> attached patch have been tested to work with atleast 96000 queues.
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