Hi All I just had a conversation with one of the FB guys (Avinash) at FB and landed up signing off as him :). He wasn't quite sure about how this works in the OSS branch. Hence the question to the broader audience. The question is more about the change in topology and reads going to a machine before data migration.
Cheers Bill On Thu, Feb 4, 2010 at 9:36 PM, Bill Hastings <bllhasti...@gmail.com> wrote: > Sorry I guess I was not clear enough. While the existing data is being > moved do requests for reads go to the new nodes? If so what if that data has > not yet migrated? There is no problem for writes. But how is the routing for > the reads handled in this situation? > > Cheers > Avinash > > > On Thu, Feb 4, 2010 at 9:07 PM, Jonathan Ellis <jbel...@gmail.com> wrote: > >> Data is moved to the new correct nodes. >> >> On Thu, Feb 4, 2010 at 10:52 PM, Bill Hastings <bllhasti...@gmail.com> >> wrote: >> > Hi All >> > >> > Could someone explain to me how the following is done - when new nodes >> are >> > added how do we read existing data since the topology changes? How does >> > Cassandra ensure that reads and writes are successful? >> > >> > Cheers >> > Bill >> > >> > >
