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From "Ryan Hennig (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-5726) Remove pre-emption from the capacity scheduler code base
Date Fri, 22 Jun 2012 17:48:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13399476#comment-13399476
] 

Ryan Hennig commented on HADOOP-5726:
-------------------------------------

Are there any plans to re-add pre-emption to the Capacity Scheduler?  Or any best practices
for using the CS in a way that allows high-priority, time-sensitive jobs to have adequate
resources when needed, without sacrificing utilization at other times?
                
> Remove pre-emption from the capacity scheduler code base
> --------------------------------------------------------
>
>                 Key: HADOOP-5726
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5726
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Hemanth Yamijala
>            Assignee: rahul k singh
>             Fix For: 0.20.1
>
>         Attachments: cs-without-preemption-23-1-2009.patch
>
>
> In an effort to simplify the code base, we would like to remove the pre-emption related
code in the capacity scheduler. We would reintroduce this (possibly with some revisions to
the original design) after a while. This will be an incompatible change. Any objections ?

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