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https://issues.apache.org/jira/browse/YARN-10504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17241173#comment-17241173
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Wangda Tan commented on YARN-10504:
-----------------------------------

[~epayne], This is a feature to allow flexibly add and remove queues. You can 
take a look at problem statement of 
[https://docs.google.com/document/d/1r_UU1OXCjvvxudNMH-KGwK0gwyt7swUSn62eKQXQOAg/edit#heading=h.ufvkgjf6tzq2]

And if you can review it and let us know if you have any other questions that 
will be greatly helpful! 

> Implement weight mode in Capacity Scheduler
> -------------------------------------------
>
>                 Key: YARN-10504
>                 URL: https://issues.apache.org/jira/browse/YARN-10504
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Benjamin Teke
>            Assignee: Benjamin Teke
>            Priority: Major
>
> To allow the possibility to flexibly create queues in Capacity Scheduler a 
> weight mode should be introduced. The existing \{{capacity }}property should 
> be used with a different syntax, i.e:
> root.users.capacity = (1.0) or ~1.0 or ^1.0 or @1.0
> root.users.capacity = 1.0w
> root.users.capacity = w:1.0
> Weight support should not impact the existing functionality.
>  
> The new functionality should: 
>  * accept and validate the new weight values
>  * enforce a singular mode on the whole queue tree
>  * (re)calculate the relative (percentage-based) capacities based on the 
> weights during launch and every time the queue structure changes



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