cluster replication and version compatibility

[Ted <r6...@gmail.com>]

Hi I'm thinking of setting up cluster replication in hbase, I didn't find
any information on version compatibility though, as in between the
clusters. Is there any information on that?

i.e. can i replicate from 0.94 to a 1.2.1 cluster?

The reason I'd want to is to perform an upgrade at the same time adverse to
an import / export which would be my other option.

Also for maintenance reasons it would be good to know if I always had to
upgrade both clusters at the exact same time or if they can be delayed.

anyone know anything about this?
Cheers.
-- 
Ted.