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From "Carlo Curino (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4360) Improve GreedyReservationAgent to support "early" allocations, and performance improvements
Date Tue, 09 Feb 2016 17:28:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-4360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15139253#comment-15139253

Carlo Curino commented on YARN-4360:

Addressed the findbugs, whitespaces, tabs, and most of the checkstyle (2-3 remain, as I think
the code is more readable as it is). [~asuresh] can you give it a look and commit if it looks

> 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-4360.6.patch,
YARN-4360.7.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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