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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2393) No total min share limitation of all pools
Date Sat, 02 May 2015 04:24:07 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14524589#comment-14524589
] 

Hadoop QA commented on MAPREDUCE-2393:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch |   0m  0s | The patch command could not apply the patch during
dryrun. |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12490803/MAPREDUCE-2393.patch
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| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / f1a152c |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5503/console |


This message was automatically generated.

> No total min share limitation of all pools
> ------------------------------------------
>
>                 Key: MAPREDUCE-2393
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2393
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: contrib/fair-share
>    Affects Versions: 0.21.0
>            Reporter: Denny Ye
>              Labels: fair, scheduler
>         Attachments: MAPREDUCE-2393.patch
>
>
> hi, there is no limitation about min share of all pools with cluster total shares. User
can define arbitrary amount of min share for each pool. It has such description in <fair
scheduler design document>, but no regular code. 
> It may critical for slot distribution. One pool can hold all cluster slots to meet it's
min share that greater than cluster total slots very much.
> If that case has happened, we should scaled down proportionally.



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