Depends on the replication strategy used. http://www.datastax.com/docs/0.8/cluster_architecture/replication
On Mon, Oct 3, 2011 at 4:06 PM, Ramesh Natarajan <rames...@gmail.com> wrote: > > I have 6 nodes in a cluster running RandonPartitioner with SimpleStrategy > and replication factor 3. Lets say we insert a column with > a QUORUM consistency. > Based on the md5 hash it decides to go to node 10.19.104.11. How does > cassandra pick the other 2 nodes? Is it sequential ( .12 and .13 ) or any > random node? > thanks > Ramesh > > > root@CAP4-CNode4 apache-cassandra-0.8.6]# ./bin/nodetool -h 127.0.0.1 ring > Address DC Rack Status State Load Owns > Token > > 141784319550391026443072753096570088105 > 10.19.104.11 datacenter1 rack1 Up Normal 19.92 GB > 16.67% 0 > 10.19.104.12 datacenter1 rack1 Up Normal 19.3 GB > 16.67% 28356863910078205288614550619314017621 > 10.19.104.13 datacenter1 rack1 Up Normal 18.57 GB > 16.67% 56713727820156410577229101238628035242 > 10.19.104.14 datacenter1 rack1 Up Normal 19.34 GB > 16.67% 85070591730234615865843651857942052863 > 10.19.105.11 datacenter1 rack1 Up Normal 19.88 GB > 16.67% 113427455640312821154458202477256070484 > 10.19.105.12 datacenter1 rack1 Up Normal 20 GB > 16.67% 141784319550391026443072753096570088105 > [root@CAP4-CNode4 apache-cassandra-0.8.6]# -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
