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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5077) Fix FSLeafQueue#getFairShare() for queues with weight 0.0
Date Fri, 17 Jun 2016 02:14:05 GMT

    [ https://issues.apache.org/jira/browse/YARN-5077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15335226#comment-15335226
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Karthik Kambatla commented on YARN-5077:
----------------------------------------

The javac warning appears to be due to the changes introduced by YARN-4844. Can you update
the call to getMemory to use getMemorySize instead? 

> Fix FSLeafQueue#getFairShare() for queues with weight 0.0
> ---------------------------------------------------------
>
>                 Key: YARN-5077
>                 URL: https://issues.apache.org/jira/browse/YARN-5077
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Yufei Gu
>            Assignee: Yufei Gu
>         Attachments: YARN-5077.001.patch, YARN-5077.002.patch, YARN-5077.003.patch, YARN-5077.004.patch,
YARN-5077.005.patch, YARN-5077.006.patch, YARN-5077.007.patch, YARN-5077.008.patch, YARN-5077.009.patch
>
>
> 1) When a queue's weight is set to 0.0, FSLeafQueue#getFairShare() returns <memory:0,
vCores:0> 
> 2) When a queue's weight is nonzero, FSLeafQueue#getFairShare() returns <memory:16384,
vCores:8>
> In case 1), that means no container ever gets allocated for an AM because from the viewpoint
of the RM, there is never any headroom to allocate a container on that queue.
> For example, we have a pool with the following weights: 
> - root.dev 0.0 
> - root.product 1.0
> The root.dev is a best effort pool and should only get resources if root.product is not
running. In our tests, with no jobs running under root.product, jobs started in root.dev queue
stay stuck in ACCEPT phase and never start.



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