Riptano has posted Cassandra documentation at http://www.riptano.com/docs/, starting with 0.6.5. We're working to add sections on Hadoop integration and on troubleshooting, as well as a version for 0.7. Feedback is welcome!
-- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
