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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5884) Capacity scheduler should account high memory jobs as using more capacity of the queue
Date Thu, 04 Jun 2009 14:03:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12716285#action_12716285
] 

Hemanth Yamijala commented on HADOOP-5884:
------------------------------------------

Vinod, can you please upload a patch for Hadoop 0.20, so I can commit it to the 0.20 branch
as well ? I will commit both together.

> Capacity scheduler should account high memory jobs as using more capacity of the queue
> --------------------------------------------------------------------------------------
>
>                 Key: HADOOP-5884
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5884
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/capacity-sched
>            Reporter: Hemanth Yamijala
>            Assignee: Vinod K V
>         Attachments: HADOOP-5884-20090529.1.txt, HADOOP-5884-20090602.1.txt, HADOOP-5884-20090603.txt,
HADOOP-5884.patch
>
>
> Currently, when a high memory job is scheduled by the capacity scheduler, each task scheduled
counts only once in the capacity of the queue, though it may actually be preventing other
jobs from using spare slots on that node because of its higher memory requirements. In order
to be fair, the capacity scheduler should proportionally (with respect to default memory)
account high memory jobs as using a larger capacity of the queue.

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