The basic Dask-like functionality is in Dagger.jl, we have plans to move out the distributed array functionality out of it and keep just the scheduler in there.

I'm working on a set of functions to work with many DataFrames (or anything) in parallel and do it out of core if possible, it's basically like JuliaDB but with a FileTree abstraction rather than a table abstraction.

http://shashi.biz/FileTrees.jl/lazy-parallel/