Hi Olivier,
On Tue, Jun 10, 2014 at 6:23 PM, Olivier Mallassi <
olivier.malla...@gmail.com> wrote:
> Is that order guaranteed with zk?
>
ZooKeeper provides a single atomic ordered sequence of operations by the
means of its Paxos-like algorithm, ZAB (ZooKeeper Atomic Broadcast).
Cassanda impleme
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 <
olivier.malla...@gmail.com> wrote:
> Hum, not sure to get your point Ted
>
> If I wrtie a da
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?
Ano
On Tue, Jun 10, 2014 at 9:24 AM, Olivier Mallassi <
olivier.malla...@gmail.com> 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.
hi all
a quick question that you would find stupid but...
Looking at Zookeeper, you need 3 nodes to support 1 node failure.
Looking at in memory data grid (coherence & co...), with 2 replicas, you
can still continue working.
So "basically", you need less replica to support the same amount of
fai
