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From Tyler Hobbs <>
Subject Re: Upgrading Cassandra
Date Wed, 09 Apr 2014 22:54:30 GMT
On Tue, Apr 8, 2014 at 4:39 AM, Alain RODRIGUEZ <> wrote:

> Yet, can't we rebuild a new DC with the current C* version, upgrade it to
> the new major once it is fully part of the C* cluster, and then switch all
> the clients to the new DC once we are sure everything is ok and shut down
> the old one ?


> I mean, on a multiDC setup, while upgrading, there must be a moment that 2
> DCs haven't the same major version, this is probably supported.

It is supported, you just don't want to do add/remove nodes, run repairs,
etc with a mixed cluster.

Tyler Hobbs
DataStax <>

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