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From "Arun C Murthy (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-3681) capacity scheduler LeafQueues calculate used capacity wrong
Date Fri, 20 Jan 2012 00:16:40 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy updated MAPREDUCE-3681:
-------------------------------------

    Attachment: MAPREDUCE-3681.patch

Findbugs caught the 'usedCapacity=0' problem... integral division! :)
                
> capacity scheduler LeafQueues calculate used capacity wrong
> -----------------------------------------------------------
>
>                 Key: MAPREDUCE-3681
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3681
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Thomas Graves
>            Assignee: Arun C Murthy
>            Priority: Critical
>         Attachments: MAPREDUCE-3681.patch, MAPREDUCE-3681.patch
>
>
> In the Capacity scheduler if you configure the queues to be hierarchical where you have
root -> parent queue -> leaf queue, the leaf queue doesn't calculate the used capacity
properly. It seems to be using the entire cluster memory rather then its parents memory capacity.

> In updateResource in LeafQueue:
>     setUsedCapacity(
>         usedResources.getMemory() / (clusterResource.getMemory() * capacity));
> I think the clusterResource.getMemory() should be something like getParentsMemory().

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