For those interested in Titan 1.0 roadmap and the evolution of the Titan OLTP/OLAP story. Titan will be implementing TinkerPop3 API http://www.tinkerpop.com/docs/current/ ... Currently, Titan 0.5.0 leverages the Faunus Gremlin compiler (http://faunus.thinkaurelius.com), but with TinkerPop3, TinkerPop3 provides an OLAP compiler for Gremlin that will make things easier for Titan as well as other graph computing engines implementing the stack http://www.tinkerpop.com/docs/current/#traversalvertexprogra...