[voctor]

Yes, but Citus can also parallelize on multiple cores when used on a single machine ("If you’re running Citus on a single machine, this will scale queries across multiple CPU cores. and create the impression of sharding across databases."). Will this functionality becomes obsolete with the 9.6 ?

[lfittl]

Fair point - I assume this will be merged together in some way (i.e. the Citus stuff building on top of the parallel scan infrastructure), but probably a better question to ask on #citus IRC / open a Github issue.

Some Postgres committers work on Citus as well (e.g. Andres Freud), so I'm sure this has been thought through before.