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From "Prabhu Joseph (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (YARN-6052) Yarn RM UI % of Queue at application level is wrong
Date Fri, 06 Jan 2017 07:35:58 GMT

     [ https://issues.apache.org/jira/browse/YARN-6052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Prabhu Joseph resolved YARN-6052.
---------------------------------
    Resolution: Duplicate

> Yarn RM UI % of Queue at application level is wrong
> ---------------------------------------------------
>
>                 Key: YARN-6052
>                 URL: https://issues.apache.org/jira/browse/YARN-6052
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.3
>            Reporter: Prabhu Joseph
>            Assignee: Prabhu Joseph
>            Priority: Minor
>         Attachments: RM_UI.png
>
>
> Test Case:
> yarn.scheduler.capacity.root.capacity=100
> yarn.scheduler.capacity.root.queues=default,dummy
> yarn.scheduler.capacity.root.default.capacity=20
> yarn.scheduler.capacity.root.dummy.capacity=80
> yarn.scheduler.capacity.root.dummy.child.capacity=50
> yarn.scheduler.capacity.root.dummy.child2.capacity=50
> Memory Total is 20GB, default queue share is 4GB and dummy queue share is 16GB. Child
and Child1 queue gets 8GB share each.
> A map reduce job is submitted  to child2 queue which asks 2 containers of 512 MB. Now
cluster Memory Used is 1GB.
> Root queue usage = 100 / (total memory / used memory)  = 100 / (20 / 1) =  5%
> Dummy queue usage = 100 / (16 /1) = 6.3%
> Dummy.Child2 queue usage = 100 / (8/1) = 12.5%
> At application level, % of queue is calculated as 100 / (50% of root queue capacity)
= 100 / (50% of 20GB) = 10.0 instead of 
> 100 / (50% of dummy queue capacity) = 100 / (50% of 16GB) = 100 / 8 = 12.5
> Where 50% is dummy.child2 capacity
> Attached RM UI screenshot.



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