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From "Vitaly Brodetskyi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-19947) To make sure LLAP preemption happens correctly, should enable priority-utilization.underutilized-preemption.enabled=true when YARN preemption is enabled
Date Thu, 09 Feb 2017 22:51:41 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-19947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vitaly Brodetskyi updated AMBARI-19947:
---------------------------------------
    Attachment:     (was: AMBARI-19947.patch)

> To make sure LLAP preemption happens correctly, should enable priority-utilization.underutilized-preemption.enabled=true
when YARN preemption is enabled
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-19947
>                 URL: https://issues.apache.org/jira/browse/AMBARI-19947
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>            Reporter: Vitaly Brodetskyi
>            Assignee: Vitaly Brodetskyi
>            Priority: Critical
>             Fix For: 2.5.0
>
>         Attachments: AMBARI-19947.patch
>
>
> We requires admin enables YARN preemption to make sure LLAP daemon can be launched in
a shared cluster.
> And yarn.scheduler.capacity.ordering-policy.priority-utilization.underutilized-preemption.enabled=true
need to be set to make preemption can happen under a fragmented cluster.
> So once admin enables preemption, we can automatically set yarn.scheduler.capacity.ordering-policy.priority-utilization.underutilized-preemption.enabled
to true.
> This option (yarn.scheduler.capacity.ordering-policy.priority-utilization.underutilized-preemption.enabled)
only supported by HDP-2.6 and after, it has no effect on HDP 2.5 and before.



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