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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-18) Make locatlity in YARN's container assignment and task scheduling pluggable for other deployment topology
Date Tue, 07 May 2013 01:27:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-18?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13650346#comment-13650346
] 

Junping Du commented on YARN-18:
--------------------------------

[~acmurthy]Yes. All implementation details can be found in this doc. It is dedicated for patch
reviewers on YARN-18 and YARN-19. Hope it helps for review and welcome comment.
[~vicaya]Agree. Will replace "Elements" with "Aware" in 6.3 patch. Thanks for reviewing carefully.
                
> Make locatlity in YARN's container assignment and task scheduling pluggable for other
deployment topology
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-18
>                 URL: https://issues.apache.org/jira/browse/YARN-18
>             Project: Hadoop YARN
>          Issue Type: New Feature
>    Affects Versions: 2.0.3-alpha
>            Reporter: Junping Du
>            Assignee: Junping Du
>              Labels: features
>         Attachments: HADOOP-8474-ContainerAssignmentTaskScheduling-pluggable.patch, MAPREDUCE-4309.patch,
MAPREDUCE-4309-v2.patch, MAPREDUCE-4309-v3.patch, MAPREDUCE-4309-v4.patch, MAPREDUCE-4309-v5.patch,
MAPREDUCE-4309-v6.patch, MAPREDUCE-4309-v7.patch, Pluggable topologies with NodeGroup for
YARN.pdf, YARN-18.patch, YARN-18-v2.patch, YARN-18-v3.1.patch, YARN-18-v3.2.patch, YARN-18-v3.patch,
YARN-18-v4.1.patch, YARN-18-v4.2.patch, YARN-18-v4.3.patch, YARN-18-v4.patch, YARN-18-v5.1.patch,
YARN-18-v5.patch, YARN-18-v6.1.patch, YARN-18-v6.2.patch, YARN-18-v6.patch
>
>
> There are several classes in YARN’s container assignment and task scheduling algorithms
that relate to data locality which were updated to give preference to running a container
on other locality besides node-local and rack-local (like nodegroup-local). This propose to
make these data structure/algorithms pluggable, like: SchedulerNode, RMNodeImpl, etc. The
inner class ScheduledRequests was made a package level class to it would be easier to create
a subclass, ScheduledRequestsWithNodeGroup.

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