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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5593) Cleanup code for AssignMapsWithLocality() in RMContainerAllocator
Date Wed, 13 Nov 2013 04:02:20 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13820906#comment-13820906
] 

Junping Du commented on MAPREDUCE-5593:
---------------------------------------

The test failure seems to be unrelated with the patch (also failed on clean trunk branch in
my local env) and may caused by MAPREDUCE-5427. Will do more investigation soon.

> Cleanup code for AssignMapsWithLocality() in RMContainerAllocator
> -----------------------------------------------------------------
>
>                 Key: MAPREDUCE-5593
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5593
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: applicationmaster
>            Reporter: Junping Du
>            Assignee: Junping Du
>            Priority: Minor
>         Attachments: MAPREDUCE-5593-v3.patch, MAPREDUCE-5593-v4.patch, YARN-1163-v1.patch,
YARN-1163-v2.patch
>
>
> In RMContainerAllocator, AssignMapsWithLocality() is a very important method to assign
map tasks on allocated containers with conforming different level of locality (dataLocal,
rackLocal, etc.). However, this method messed with different code logic to handle different
type of locality but have lots of similar behaviours. This is hard to maintain as well as
do extension with other locality type, so we need some more clear code here.



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