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https://issues.apache.org/jira/browse/AMBARI-19737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15840702#comment-15840702
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Swapan Shridhar commented on AMBARI-19737:
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Validation check added.
When preemption off: [^Screen Shot 2017-01-26 at 1.28.16 PM.png]
When preemption on: [^pjimage.jpg]
> Add a validation check in HSI about Capacity Scheduler preemption requirements
> ------------------------------------------------------------------------------
>
> Key: AMBARI-19737
> URL: https://issues.apache.org/jira/browse/AMBARI-19737
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.4.2
> Reporter: Swapan Shridhar
> Assignee: Swapan Shridhar
> Fix For: 2.5.0
>
> Attachments: pjimage.jpg, Screen Shot 2017-01-26 at 1.28.16 PM.png
>
>
> Capacity Scheduler preemption is not enabled by default in HDP. Enabling it
> affects the entire cluster and LLAP is of concern in the bug.
> *Requirement:*
> - Add a validation check about CS preemption configuration, while LLAP is not
> enabled.
> *Message:*
> {noformat}
> Enabling YARN config 'yarn.resourcemanager.scheduler.monitor.enable' is
> recommended if enabling LLAP, to ensure it is able to get cluster capacity.
> {noformat}
> If CS preemption is enabled, no validation check required.
> -> Also, uncommenting and fixing the test code in
> test_stack_advisor::test_validateHiveInteractiveSiteConfigurations().
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