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https://issues.apache.org/jira/browse/HADOOP-5884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hemanth Yamijala updated HADOOP-5884:
-------------------------------------
Release Note:
Fixes Capacity scheduler to account more capacity of a queue for a high memory
job. Done by considering these jobs to
take more slots proportionally with respect to a slot's default memory size.
> 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
> Fix For: 0.20.1
>
> Attachments: HADOOP-5884-20090529.1.txt, HADOOP-5884-20090602.1.txt,
> HADOOP-5884-20090603.txt, HADOOP-5884-20090605-branch-20.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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