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From Robert Coli <>
Subject Re: Cassandra rack awareness
Date Fri, 27 Feb 2015 21:12:59 GMT
On Fri, Feb 27, 2015 at 7:30 AM, Amlan Roy <> wrote:

> I am new to Cassandra and trying to setup a Cassandra 2.0 cluster using 4
> nodes, 2 each in 2 different racks. All are in same data centre. This is
> what I see in the documentation:
> To use racks correctly:
> Use the same number of nodes in each rack. Use one rack and place the
> nodes in different racks in an alternating pattern. This allows you to
> still get the benefits of Cassandra's rack feature, and allows for quick
> and fully functional expansions. Once the cluster is stable, you can swap
> nodes and make the appropriate moves to ensure that nodes are placed in the
> ring in an alternating fashion with respect to the racks.
> What I have understood is, in, I need to use
> single rack name even though I have 2 racks and then place the nodes in
> such an order that they are placed in an alternating fashion - RAC1-NODE1,
> Just wanted to know if this is correct. If yes, how do I enforce this
> order while adding nodes.


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