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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: About the replication strategy of Cassandra
Date Sat, 13 Mar 2010 21:50:21 GMT
On Sat, Mar 13, 2010 at 3:47 PM, Kauzki Aranami
<kazuki.aranami@gmail.com> wrote:
> Does each replication strategy of "Rack Unaware" "Rack Aware(within a
> datacenter)" "Datacenter Aware" in Cassandra depend by the algorithm
> adopted respectively?

I still don't understand, sorry.

> For instance, what is the strategy recommended when Zookeeper is
> adopted?A minimum speed of the line in the data center is anxious,
> too.

For ZK you should stick to one datacenter.  (you can still use
RackAware for the, well, rack aware parts.)  ZK does multiple round
trips for each write (think of it as 2pc) so it really does poorly
across a wan.

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