[jira] [Updated] (MAPREDUCE-4105) Yarn RackResolver ignores rack configurations

["Ahmed Radwan (Updated) (JIRA)" <ji...@apache.org>]

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

Ahmed Radwan updated MAPREDUCE-4105:
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    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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