Currently nutchgora is set to work against gora-0.1.1. I wanted to work with a newer version of Cassandra, so used the gora trunk version. There is a slight API change in DataStoreFactory.createDataStore() - it now wants the Configuration as a parameter. Since I made this change locally anyway, thought it would be good to share to help you guys out when you decide to release a new version of nutchgora.
Patch is attached. Thanks to whoever came up with the idea of backing nutch with a database .