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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6152) Used queue percentage not accurate in UI for 2.7 and below when using DominantResourceCalculator
Date Tue, 07 Feb 2017 15:32:41 GMT

    [ https://issues.apache.org/jira/browse/YARN-6152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15856203#comment-15856203
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Eric Payne commented on YARN-6152:
----------------------------------

Thanks [~jhung], I will review today.

> Used queue percentage not accurate in UI for 2.7 and below when using DominantResourceCalculator
> ------------------------------------------------------------------------------------------------
>
>                 Key: YARN-6152
>                 URL: https://issues.apache.org/jira/browse/YARN-6152
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.3
>            Reporter: Jonathan Hung
>            Assignee: Jonathan Hung
>         Attachments: dominantRC.png, YARN-6152-branch-2.7.001.patch, YARN-6152-branch-2.7.002.patch
>
>
> YARN-4751 adds the {{getUsedCapacity}} and {{getAbsoluteUsedCapacity}} methods to {{AbstractCSQueue}}
which is used to display queue usage in UI for branch-2.7 and below. However if there is more
than one partition in the cluster, with different dominant resources, then queue usage may
not be displayed as expected.
> Contrived example: Default partition has <90GB, 10vcores>, and "test" partition
has <10GB, 90vcores>. {{root}} queue in default partition uses <30GB, 10vcores>.
Here we expect queue usage to be 100 since it is using all vcores in default partition. But
the displayed usage will be (30GB/100GB)/(90GB/100GB) = 33%.



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