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From rash aroskar <rashmi.aros...@gmail.com>
Subject Re: making sure 1 copy per availability zone(rack) using EC2Snitch
Date Mon, 09 Sep 2013 18:21:15 GMT
Thanks for quick response Rob.
Are you suggesting deploying 1.2.9 only if using Cassandra "DC" outside of
EC2 or if I wish to use rack replication at all?


On Mon, Sep 9, 2013 at 12:43 PM, Robert Coli <rcoli@eventbrite.com> wrote:

> On Mon, Sep 9, 2013 at 8:56 AM, rash aroskar <rashmi.aroskar@gmail.com>wrote:
>
>> I am planning my new cassandra 1.2.5 cluster with all nodes in single
>> region but divided among 2 availablity zones equally. I want to make sure
>> with replication factor 2 I get 1 copy in every availability zone. As per
>> my knowledge using placement strategy EC2Snitch should take care of this.
>> Is this correct? Do I need to specify any strategy options?
>>
>
> https://issues.apache.org/jira/browse/CASSANDRA-3810
>
> Has background on how one must configure all rack aware snitches.
>
> If you may ever have a Cassandra "DC" outside of EC2, for example for
> Disaster Recovery, use GossipingPropertyFileSnitch.
>
> Also, deploy on 1.2.9, not 1.2.5.
>
> =Rob
>

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