the bulk loader <http://www.datastax.com/dev/blog/bulk-loading>, or

the basic and well-known tools: export & import SStable 
<http://wiki.apache.org/cassandra/Operations#Import_.2BAC8_export>

-pprun

On 2012年02月02日 15:16, Hefeng Yuan wrote:
> Hi,
>
> We need clone the data between 2 clusters. These 2 clusters have 
> different number of nodes.
>
> source: 6 nodes, RF5
> destination: 3 nodes, RF3
>
> Cassandra version is 0.8.1.
>
> Is there any suggestion on how to do this?
>
> -- 
> Thanks,
> Hefeng
>