i see this in the upgrade notes:

   - 0.6 network traffic is not compatible with earlier versions.  You
     will need to shut down all your nodes at once, upgrade, then restart.

is there a plan to version the protocol used so new versions should be compatible with older ones until deprecated?

Jonathan Ellis wrote:
upgrading is always covered in NEWS, e.g.
https://svn.apache.org/repos/asf/cassandra/branches/cassandra-0.6/NEWS.txt

On Wed, Mar 17, 2010 at 3:21 PM, Joseph Stein <crypt...@gmail.com> wrote:
since it looks like 0.6.X is making its way towards GA, what is the
data migration path for folks running 0.5.1? thanks....trying to
decide if to go to production with 0.6 beta3 or 0.5.1 and upgrade.

/*
Joe Stein
http://www.linkedin.com/in/charmalloc
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