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From Edward Ribeiro <edward.ribe...@gmail.com>
Subject Re: zookeeper needs 3 nodes to support 1 failure
Date Wed, 11 Jun 2014 11:58:16 GMT
Hi Olivier,

On Tue, Jun 10, 2014 at 6:23 PM, Olivier Mallassi <
olivier.mallassi@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 implements a Paxos-like algorithm too (
http://www.datastax.com/dev/blog/lightweight-transactions-in-cassandra-2-0 )
so you need to use it to achieve the same effect: strong consistency even
if the event of node failure and message loss.

Edward

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