CumulusRDF: configuration: CumulusRDF does currently not work with Cassandra 2.x CumulusRDF has been tested with Cassandra 1.2.x and 1.1.x. The recommended version is: Cassandra 1.2.x. We use apache-cassandra-1.2.16. replace snappy-java-1.0.5.jar with snappy-java-1.1.0.1.jar.