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https://issues.apache.org/jira/browse/YARN-5342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wangda Tan updated YARN-5342:
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Attachment: YARN-5342.1.patch
Attached ver.1 patch for review
> Improve non-exclusive node partition resource allocation in Capacity Scheduler
> ------------------------------------------------------------------------------
>
> Key: YARN-5342
> URL: https://issues.apache.org/jira/browse/YARN-5342
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Wangda Tan
> Assignee: Wangda Tan
> Attachments: YARN-5342.1.patch
>
>
> In the previous implementation, one non-exclusive container allocation is
> possible when the missed-opportunity >= #cluster-nodes. And
> missed-opportunity will be reset when container allocated to any node.
> This will slow down the frequency of container allocation on non-exclusive
> node partition: *When a non-exclusive partition=x has idle resource, we can
> only allocate one container for this app in every
> X=nodemanagers.heartbeat-interval secs for the whole cluster.*
> In this JIRA, I propose a fix to reset missed-opporunity only if we have >0
> pending resource for the non-exclusive partition OR we get allocation from
> the default partition.
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