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https://issues.apache.org/jira/browse/YARN-3920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14725729#comment-14725729
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Anubhav Dhoot commented on YARN-3920:
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[~asuresh] appreciate your review.
> FairScheduler Reserving a node for a container should be configurable to
> allow it used only for large containers
> ----------------------------------------------------------------------------------------------------------------
>
> Key: YARN-3920
> URL: https://issues.apache.org/jira/browse/YARN-3920
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Reporter: Anubhav Dhoot
> Assignee: Anubhav Dhoot
> Attachments: YARN-3920.004.patch, YARN-3920.004.patch,
> YARN-3920.004.patch, YARN-3920.004.patch, YARN-3920.005.patch,
> yARN-3920.001.patch, yARN-3920.002.patch, yARN-3920.003.patch
>
>
> Reserving a node for a container was designed for preventing large containers
> from starvation from small requests that keep getting into a node. Today we
> let this be used even for a small container request. This has a huge impact
> on scheduling since we block other scheduling requests until that reservation
> is fulfilled. We should make this configurable so its impact can be minimized
> by limiting it for large container requests as originally intended.
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