[jira] [Commented] (YARN-4360) Improve GreedyReservationAgent to support "early" allocations, and performance improvements

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-4360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15082157#comment-15082157 ] 

Hadoop QA commented on YARN-4360:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | {color:red} docker {color} | {color:red} 3m 54s {color} | {color:red} Docker failed to build yetus/hadoop:0ca8df7. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12780436/YARN-4360.5.patch |
| JIRA Issue | YARN-4360 |
| Powered by | Apache Yetus 0.2.0-SNAPSHOT   http://yetus.apache.org |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/10150/console |


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> Improve GreedyReservationAgent to support "early" allocations, and performance improvements 
> --------------------------------------------------------------------------------------------
>
>                 Key: YARN-4360
>                 URL: https://issues.apache.org/jira/browse/YARN-4360
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler, fairscheduler, resourcemanager
>    Affects Versions: 2.8.0
>            Reporter: Carlo Curino
>            Assignee: Carlo Curino
>         Attachments: YARN-4360.2.patch, YARN-4360.3.patch, YARN-4360.5.patch, YARN-4360.patch
>
>
> The GreedyReservationAgent allocates "as late as possible". Per various conversations, it seems useful to have a mirror behavior that allocates as early as possible. Also in the process we leverage improvements from YARN-4358, and implement an RLE-aware StageAllocatorGreedy(RLE), which significantly speeds up allocation.



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