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From "Ryan King (JIRA)" <j...@apache.org>
Subject [jira] Created: (CASSANDRA-1015) Internal Messaging should be backwards compatible
Date Fri, 23 Apr 2010 05:20:49 GMT
Internal Messaging should be backwards compatible
-------------------------------------------------

                 Key: CASSANDRA-1015
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1015
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 0.6, 0.6.1, 0.6.2, 0.7, 0.8
            Reporter: Ryan King


Currently, incompatible changes in the node-to-node communication prevent rolling restarts
of clusters.

In order to fix this we should:

1) use a framework that makes doing compatible changes easy
2) have a policy of only making compatible changes between versions n and n+1*


* Running multiple versions should only be supported for small periods of time. Running clusters
of mixed version is not needed here.

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