I think this is a question specifically for Patricio Echagüe, though I welcome answers from anyone else who can contribute...
We are considering using Magnolia as a CMS. Magnolia uses Jackrabbit for its data storage. Jackrabbit is a JCR implementation. Questions: 1. Can we plug Cassandra into JCR/Jackrabbit as its data storage? 2. I see that some work has already been done on this issue (specifically, I see that Patrico was involved in this). Where does that work stand now? Is this a viable option for us? 3. How much work would it be for us? 4. What are the issues involved?