(I am one of the authors of Crane) The thing that happened with Crane is that it grew a lot of Twitter-specific cruft and separating that from the generally-useful bits is a serious undertaking -- and I'm not sure how much useful stuff would be left once we cut the twittery bits out. Now and then I chat with the Sqoop folks about how we can merge the two but that path isn't clear either.. so it's in a bit of a limbo, as far as being open-sourced. Sorry about that.