Let's make this official. CEP: https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-30%3A+Approximate+Nearest+Neighbor%28ANN%29+Vector+Search+via+Storage-Attached+Indexes
POC that demonstrates all the big rocks, including distributed queries: https://github.com/datastax/cassandra/tree/cep-vsearch -- Jonathan Ellis co-founder, http://www.datastax.com @spyced
