Wow, thats:
https://github.com/bloomberg/comdb2
Looks interesting. Any experience using it in real projects?
Yeah it works well. I also sometimes push code into the db for faster execution (sorry on mobile, can't detail now).
Haven't tested out Geo replication though, but it's pretty straightforward. Clock drift maximum and all that.
By using Sqlite as the SQL frontend, it retains features other NewSQL engines struggle with (recursive CTE, deep optimization, compatibility with existing queries etc)