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From "Ahmed Radwan (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3493) Add the default mapreduce.shuffle.port property to mapred-default.xml
Date Thu, 01 Dec 2011 09:37:40 GMT
Add the default mapreduce.shuffle.port property to mapred-default.xml

                 Key: MAPREDUCE-3493
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3493
             Project: Hadoop Map/Reduce
          Issue Type: Bug
            Reporter: Ahmed Radwan
            Assignee: Ahmed Radwan
            Priority: Minor

I faced this issue when trying to run multiple Hadoop MR2 instances on the same node. The
default value for this property is hardcoded in the ShuffleHandler.java class so it results
in port conflicts. The issue is resolved if you set the property value in your conf files.
But the absence of this property from *-default.xml files is confusing. So It'll be cleaner
to move this property to mapred-default.xml, so its default value can be easily identified
and changed if needed. 

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