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From Gary Dusbabek <>
Subject Re: 0.6 to 0.7 upgrade assumptions
Date Tue, 02 Nov 2010 18:49:43 GMT
You'll need to convert from storage-conf.xml to cassandra.yaml and
import your schema at some point.  NEWS.txt outlines the general
approach (see Upgrading).


On Tue, Nov 2, 2010 at 13:31, Erik Onnen <> wrote:
> Hello,
> We're planning an upgrade from 0.6.7 (after it's released) to 0.7.0 (after
> it's released) and I wanted to validate my assumptions about what can be
> expected. Obviously I'll need to test my own assumptions but I was hoping
> for some guidance to make sure my understanding is correct.
> My core assumptions are:
> 1) After taking the upstream services offline and inducing a flush on 0.6
> nodes so that all data is compacted, I should be able to start 0.7 binaries
> on top of the 0.6 data files with no issue.
> 2) When upgrading, I can change from RackUnawareStrategy to a
> PropertyFileSnitch configuration. My understanding is that read repair will
> kick in for the missing facility replicas at a rate roughly equivalent to
> the read repair chance.
> 3) While read repair from #2 is occurring, the now incorrect replica nodes
> will continue to be capable of servicing requests for the data that has not
> been migrated to the correct replicas.
> Thanks!
> -erik

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