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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11096) Support rolling upgrade between 2.x and 3.x
Date Wed, 02 Nov 2016 22:53:58 GMT
Andrew Wang created HDFS-11096:

             Summary: Support rolling upgrade between 2.x and 3.x
                 Key: HDFS-11096
                 URL: https://issues.apache.org/jira/browse/HDFS-11096
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: rolling upgrades
    Affects Versions: 3.0.0-alpha1
            Reporter: Andrew Wang

trunk has a minimum software version of 3.0.0-alpha1. This means we can't rolling upgrade
between branch-2 and trunk.

This is a showstopper for large deployments. Unless there are very compelling reasons to break
compatibility, let's restore the ability to rolling upgrade to 3.x releases.

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