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From Jonathan Ellis <>
Subject Re: Replica data distributing between racks
Date Mon, 02 May 2011 19:22:49 GMT
On Mon, May 2, 2011 at 2:18 PM, aaron morton <> wrote:
> When the NTS selects replicas in a DC it orders the tokens available in  the DC, then
(in the first pass) iterates through them placing a replica in each unique rack.  e.g. if
the RF in each DC was 2, the replicas would be put on 2 unique racks if possible. So the lowest
token in the DC will *always* get a write.

It's supposed to start w/ the node closest to the token in each DC, so
that shouldn't be the case unless you are using BOP/OPP instead of RP.

Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support

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