Various places in the code call IPartitioner.decorateKey() which returns a DecoratedKey<T> which contains both the original key and the Token<T>
The RandomPartitioner md5 to hash the key ByteBuffer and create a BigInteger. OPP converts the key into utf8 encoded String. Using the token to find which endpoints contain replicas is done by the AbstractReplicationStrategy.calculateNaturalEndpoints() implementations. Does that help? ----------------- Aaron Morton Freelance Cassandra Developer @aaronmorton http://www.thelastpickle.com On 23 Jun 2011, at 19:58, Jonathan Colby wrote: > Hi - > > I'd like to understand more how the token is hashed with the key to determine > on which node the data is stored - called decorating in cassandra speak. > > Can anyone share any documentation on this or describe this more in detail? > Yes, I could look at the code, but I was hoping to be able to read more about > how it works first. > > thanks.
