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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3764) CapacityScheduler should properly handle moving LeafQueue from one parent to another
Date Wed, 03 Jun 2015 18:48:38 GMT

    [ https://issues.apache.org/jira/browse/YARN-3764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14571479#comment-14571479
] 

Vinod Kumar Vavilapalli commented on YARN-3764:
-----------------------------------------------

bq. A short term fix is don't allow remove queue under parentQueue.
We never supported removing queues. So this is not just a short-term fix, this is the right
fix for now.

> CapacityScheduler should properly handle moving LeafQueue from one parent to another
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-3764
>                 URL: https://issues.apache.org/jira/browse/YARN-3764
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>            Priority: Blocker
>
> Currently CapacityScheduler doesn't handle the case well, for example:
> A queue structure:
> {code}
>     root
>       |
>       a (100)
>     /   \
>    x     y
>   (50)   (50)
> {code}
> And reinitialize using following structure:
> {code}
>      root
>      /   \ 
> (50)a     x (50)
>     |
>     y
>    (100)
> {code}
> The actual queue structure after reinitialize is:
> {code}
>      root
>     /    \
>    a (50) x (50)
>   /  \
>  x    y
> (50)  (100)
> {code}
> We should handle this case better.



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