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From Apache Wiki <>
Subject [Cassandra Wiki] Update of "RandomPartitioner" by SarahBaker
Date Mon, 03 Oct 2011 21:19:05 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Cassandra Wiki" for change notification.

The "RandomPartitioner" page has been changed by SarahBaker:

  Describe RandomPartitioner here.
+ Random Partitioner (RP) is a scheme to organize how to place the keys in the cassandra cluster
node ring.  This in turn impacts how information is spread across the cluster and impacts
range query efficiency.  Random partitioning will spread keys fairly evenly across the cluster.
+ The scheme is to use a BigInteger token and MD5 hash to determine placement.
+ This is the default partitioner 
+ Partitioning cannot change without serious impact to data, and so it does not change after
setting with the initial 
+ configuration.
+ There are other partitions schemes such as Order Preserving Partitioning (OPP), Collating
Order Preserving Partitioning and Byte-Ordered Partitioning.

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