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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3936) JobClient should work with -1/+1 version of JobTracker
Date Tue, 12 Aug 2008 11:22:44 GMT
JobClient should work with -1/+1 version of JobTracker

                 Key: HADOOP-3936
                 URL: https://issues.apache.org/jira/browse/HADOOP-3936
             Project: Hadoop Core
          Issue Type: New Feature
          Components: mapred
         Environment: all
            Reporter: Alejandro Abdelnur
            Priority: Critical

Currently there is version check on the RPC calls that enforces the same Hadoop version on
the client and the server.

To enable phased upgrades of systems using Hadoop and Hadoop itself the {{JobClient}} should
be able to interact with a {{JobTracker}} of the previous and the next version of Hadoop (or
with a range).

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