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From Brandon Williams <>
Subject Re: Cassandra Database Format Compatibility
Date Mon, 23 Nov 2009 23:27:53 GMT
On Mon, Nov 23, 2009 at 4:47 PM, Jon Graham <> wrote:

> Hello Everyone,
> Will the Cassandra database format for the current Cassandra source trunk
> be compatible with the 0.5 Cassandra release?

Yes.  Only the commitlog format changes between 0.4 and 0.5, and that isn't
a problem since you can just nodeprobe flush to get around it.

> If there are database version differences, is there a migration path to
> convert older data formats to the new versions?

In the future if the format changes, there will be a migration path.

> Is there an estimated release date for the 0.5 release?

Beta should happen fairly soon -- it's up for a vote in the IPMC right now.


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