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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Multi-DC Deployment
Date Mon, 18 Apr 2011 16:13:47 GMT
They will timeout until failure detector realizes the DC1 nodes are
down (~10 seconds). After that they will immediately return
UnavailableException until DC1 comes back up.

On Mon, Apr 18, 2011 at 10:43 AM, Baskar Duraikannu
<baskar.duraikannu.db@gmail.com> wrote:
> We are planning to deploy Cassandra on two data centers.   Let us say that
> we went with three replicas with 2 being in one data center and last replica
> in 2nd Data center.
>
> What will happen to Quorum Reads and Writes when DC1 goes down (2 of 3
> replicas are unreachable)?  Will they timeout?
>
>
> Regards,
> Baskar



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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