Data scientists and data engineers like Python and Scala
Python and Scala are popular among members of several well-attended SF Bay Area Meetups
In exchange for getting personalized recommendations many Meetup members declare topics that they’re interested in. I recently looked at the topics listed by members of a few local, data Meetups that I’ve frequented. These Meetups vary in size from 600 to 2,000 total (and 400 to 1,100 active) members.
Given that it’s written in Scala it’s not surprising that Spark Meetup members expressed an interest in that language. But Scala is twice as popular than Clojure among members of the other three Meetups I examined (including the Storm users group).