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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-20821) Update default values for YARN preemption in Ambari
Date Fri, 21 Apr 2017 15:55:04 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-20821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15978964#comment-15978964
] 

Hadoop QA commented on AMBARI-20821:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12864529/AMBARI-20821_trunk.patch
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/11447//console

This message is automatically generated.

> Update default values for YARN preemption in Ambari
> ---------------------------------------------------
>
>                 Key: AMBARI-20821
>                 URL: https://issues.apache.org/jira/browse/AMBARI-20821
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>            Reporter: Vitaly Brodetskyi
>            Assignee: Vitaly Brodetskyi
>             Fix For: 2.5.1
>
>         Attachments: AMBARI-20821_trunk.patch
>
>
> Set 1) "yarn.resourcemanager.monitor.capacity.preemption.total_preemption_per_round"
should >= 1 / #cluster-nodes. (For example, cluster has 20 nodes, total_preemption_per_round
should be at least 1 / 20 = 0.05. (By default this is 0.1)
> This really should be part of stack-advisor.
> Set 2) yarn.resourcemanager.monitor.capacity.preemption.natural_termination_factor =
1 (by default is 0.2).
> The two configs will affect preemption for large containers like LLAP. We will put these
suggestions to documentation, but it will be also good if we can update them in Ambari.



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