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https://issues.apache.org/jira/browse/YARN-10938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18015804#comment-18015804
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ASF GitHub Bot commented on YARN-10938:
---------------------------------------
zheng-weihao closed pull request #3414: YARN-10938. Support reservation
scheduling enabled switch for capacity scheduler
URL: https://github.com/apache/hadoop/pull/3414
> Support reservation scheduling enabled switch for capacity scheduler
> --------------------------------------------------------------------
>
> Key: YARN-10938
> URL: https://issues.apache.org/jira/browse/YARN-10938
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: capacity scheduler
> Reporter: Weihao Zheng
> Assignee: Weihao Zheng
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Currently the CapacityScheduler uses reservations in order to handle requests
> for large containers and the fact there might not currently be enough space
> available on a single host. But this algorithm is not suitable for small
> cluster which only have very limited resources. So we can add a switch
> property in capacity scheduler's configuration to avoid reservation
> scheduling in these use cases.
> CHANGES:
> Add {{"yarn.scheduler.capacity.reservation.enabled"}} in capacity scheduler's
> configuration.
>
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