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From Alain RODRIGUEZ <>
Subject Re: Upgrading Cassandra
Date Tue, 08 Apr 2014 09:39:21 GMT
Hi, thanks for this information Rob.

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.

With this process, won't I get rid of potential issue ?


2014-04-03 23:52 GMT+02:00 Robert Coli <>:

>   On Thu, Apr 3, 2014 at 8:56 AM, Alain RODRIGUEZ <>wrote:
>> Since we use AWS EC2 instances, Is it possible to upgrade Cassandra
>> through a new DC as it is recommended while switching to vnodes ?
> No, because bootstrapping (and rebuilding/repairing/etc.) on a
> split-major-version cluster is not supported.
> =Rob

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