Hi, In terms of federated query, has anyone done any evaluation between spark-sql and drill and jboss-tiied. I have a very urgent requirement for creating a virtualized layer (sitting atop several databases) and am evaluating these 3 as an option.. Any help would be appreciated. I know Spark-SQL has the benefit that i can invoke MLLib algorithms on the data fetched, but apart from that, any other considerations ? Drill does not seem to have support for many data sources..
Any inputs ? thx pranay
