ZK provides strong ordering guarantees even under partition scenarios. See http://aphyr.com/ for more information about how Cassandra fails in this.
On Tue, Jun 10, 2014 at 2:23 PM, Olivier Mallassi < [email protected]> wrote: > Hum, not sure to get your point Ted > > If I wrtie a data into coherence, the next read Will be consistent > If I wrtie a data into cassandra with the quorum, idem > > I can yet have "race condition" if processA writes A end processB writes A' > order is not guaranteed > > Is that order guaranteed with zk? > > Another point is : is it for split brain? > > Thx > > Le mardi 10 juin 2014, Ted Dunning <[email protected]> a écrit : > > > On Tue, Jun 10, 2014 at 9:24 AM, Olivier Mallassi < > > [email protected] <javascript:;>> wrote: > > > > > What are the guarantees zookeeper provide and a data grid does not > > provide? > > > the lock? a sequential consistency? > > > > > > > You said it. Consistency is what you lose. > > >
