How do you write to two versions of Cassandra from the same client? Two versions of Hector?
On Mon, Mar 14, 2011 at 6:46 PM, Robert Coli <rc...@digg.com> wrote: > On Mon, Mar 14, 2011 at 8:39 AM, Jedd Rashbrooke <j...@visualdna.com> > wrote: > > But more importantly for us it would mean we'd have just the > > one major outage, rather than two (relocation and 0.6 -> 0.7) > > Take zero major outages instead? :D > > a) Set up new cluster on new version. > b) Fork application writes, so all writes go to both clusters. > c) Backfill old data to new cluster via API writes. > d) Flip the switch to read from the new cluster. > e) Turn off old cluster. > > =Rob >
