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From "Ahmed Radwan (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4105) Yarn RackResolver ignores rack configurations
Date Thu, 05 Apr 2012 02:27:18 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ahmed Radwan updated MAPREDUCE-4105:
------------------------------------

    Attachment: MAPREDUCE-4105.patch

Attaching a patch. Basically the problem is that RackResolver.java when initialized, it doesn't
set the conf for the created dnsToSwitchMapping object. So the ScriptBasedMapping doesn't
find the scriptName.

I have also added a a testcase to the patch and also manually verified that the web ui is
now showing the correct mappings.
                
> Yarn RackResolver ignores rack configurations
> ---------------------------------------------
>
>                 Key: MAPREDUCE-4105
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4105
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.1
>            Reporter: Ahmed Radwan
>            Assignee: Ahmed Radwan
>             Fix For: 0.23.2
>
>         Attachments: MAPREDUCE-4105.patch
>
>
> Incorrect mappings because the Yarn RackResolver ignores rack configurations. This can
be verified by inspecting the resource manager web ui that lists all the nodes, all of them
show up with /default-rack regardless of the output from the script specified using net.topology.script.file.name
configuration property.

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