On Thu, May 24, 2012 at 1:50 PM, Henrik Schröder <skro...@gmail.com> wrote: > Ok. It's important for us to not have any downtime, so how about this > solution: > > We startup the Linux cluster independently. > We configure our application to send all Cassandra writes to both clusters, > but only read from the Windows cluster. > We run sstableloader on each windows server (Is it possible to do in > parallell?), sending whatever it has to the Linux cluster. > When it's done on all Windows servers, we configure our application to only > talk to the Linux cluster.
That sounds fine, with the caveat that you can't run sstableloader from a machine running Cassandra before 1.1, so copying the sstables manually (assuming both clusters are the same size and have the same tokens) might be better. > The only issue with this is the timestamps of the data and tombstones in > each sstable, will they be preserved by sstableloader? What about deletes of > non-existing keys? Will they be stored in the Linux cluster so that when > sstableloader inserts the key later, it's resolved as being deleted? None of that should be a problem. -Brandon
