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https://issues.apache.org/jira/browse/AMBARI-19947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15860006#comment-15860006
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Hadoop QA commented on AMBARI-19947:
------------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12851920/AMBARI-19947.patch
against trunk revision .
{color:red}-1 patch{color}. Top-level trunk compilation may be broken.
Console output:
https://builds.apache.org/job/Ambari-trunk-test-patch/10499//console
This message is automatically generated.
> 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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