Cassandra coexistence 1.1.x and 1.2.x -


we're running cassandra version 1.1.10 on 2 data centers , want upgrade 1 version 1.2.x
it's possible upgrade 1 dc , work mixed version cluster?
thanks

it possible in short term part of upgrade not beyond that. in general, streaming between different cassandra versions not supported wouldn't able run repairs or add or remove nodes.

it risky because mixed version clusters aren't tested long periods of time since mixed version support designed upgrades.


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