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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4212) FairScheduler: Parent queues with 'Fair' policy should compute shares of all resources for its children during a recompute
Date Tue, 17 May 2016 22:40:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-4212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15287789#comment-15287789
] 

Hadoop QA commented on YARN-4212:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s {color} | {color:blue}
Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 4s {color} | {color:red}
YARN-4212 does not apply to trunk. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute
for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12764429/YARN-4212.1.patch
|
| JIRA Issue | YARN-4212 |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/11517/console |
| Powered by | Apache Yetus 0.2.0   http://yetus.apache.org |


This message was automatically generated.



> FairScheduler: Parent queues with 'Fair' policy should compute shares of all resources
for its children during a recompute
> --------------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-4212
>                 URL: https://issues.apache.org/jira/browse/YARN-4212
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Arun Suresh
>            Assignee: Yufei Gu
>              Labels: fairscheduler
>         Attachments: YARN-4212.1.patch
>
>
> The Fair Scheduler, while performing a {{recomputeShares()}} during an {{update()}} call,
uses the parent queues policy to distribute shares to its children.
> If the parent queues policy is 'fair', it only computes weight for memory and sets the
vcores fair share of its children to 0.
> Assuming a situation where we have 1 parent queue with policy 'fair' and multiple leaf
queues with policy 'drf', Any app submitted to the child queues with vcore requirement >
1 will always be above fairshare, since during the recomputeShare process, the child queues
were all assigned 0 for fairshare vcores.



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