I've been working with Julia (and Jupyter) for over a year. It's pretty robust and Julia is kinda addictive: certain things can be written quite elegantly, and it's hard to rephrase in other languages. Spark integration with Julia is still early stage...
I would like to see support for Julia in the Data Scientist Workbench. This may support development on Julia/Spark as well.
Thank you for your suggestion. We are hearing more and more good things about Julia. Sicne there is interest in the community we need to see how we can add it. Just have to see where it fits in the priority and resources.
This is Feature 908 in our backlog.