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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Different KeySpaces for different nodes in the same ring
Date Tue, 25 May 2010 01:24:01 GMT
DatacenterShardSnitch in 0.7 allows something like this:

#   DatacenterShardStrategy is a generalization of RackAwareStrategy.
#   For each datacenter, you can specify (in `datacenter.properties`)
#   how many replicas you want on a per-keyspace basis.  Replicas are
#   placed on different racks within each DC, if possible.

(DSS is present in 0.6 but incomplete, which is why it is not documented there.)

On Mon, May 24, 2010 at 7:26 PM, Mishail <mishail.mishail@gmail.com> wrote:
> Greetings,
>
> Is it possible to spread the particular keyspace only to the part of the
> ring?
>
> For example:
>
> Node    | Keyspaces
> --------------------
> node1   | KS1
> node2   | KS2
> node3   | KS1, KS2
>
> Each KeySpace has ReplicationFactor == 2, so, node3 would store data
> from all keyspaces.
>
>



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

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