Not just that. Disco also provides a distributed storage service for locality of reference when doing Map-Reduce.
This, in turn, might be something you'd use to build a tailored distributed system where you'd call out to Python (and its ecosystem, like Pandas, etc.) to do your own data processing.
My personal interest in it is that it uses LISP Flavored Erlang (lfe.io) and might therefore be nice to use with Hy (hylang.org)