@Barak Amar you keep on complaining that there are too many execution engines. Good news! Here's another one 😇. (Actually it looks nice from a brief glance...) https://engineering.fb.com/2023/03/09/open-source/velox-open-source-execution-engine/

is it suppose to be a unified query engine? it feels like it will slowdown development/will be slow to comply with other engines versions.