title: Cassandra RandomPartitioner on version 1.2.3
body: <p>Im installing Cassandra 1.2.3 on debian using apt, I was previously using a tarball 1.1.7 install.  After install i'm changing the partitioner from Murmur3Partitioner to RandomPartitioner in cassandra.yaml as follows:</p>
  
  <p>partitioner: org.apache.cassandra.dht.RandomPartitioner</p>
  
  <p>Then on starting i'm seeing incompatible system keyspace errors as follows:</p>
  
  <p>ERROR 18:22:11,465 Cannot open /var/lib/cassandra/data/system/schema_keyspaces/system-schema_keyspaces-ib-1; partitioner org.apache.cassandra.dht.Murmur3Partitioner does not match system partitioner org.apache.cassandra.dht.RandomPartitioner.  Note that the default partitioner starting with Cassandra 1.2 is Murmur3Partitioner, so you will need to edit that to match your old partitioner if upgrading.
  Service exit with a return value of 1</p>
  
  <p>How can I set the system keyspace to be RandomPartitioner? I have tried purging the data folder, apt-get remove, also apt-get purge then re-installing, changing to RandomPartitioner then starting cassandra but it is still failing.  I've also replicated this on my ubuntu desktop so im thinking im doing something wrong here.</p>
  
  <p>Any help is appreciated!</p>
  
  <p>Cheers</p>
  
  <p>Sam</p>