Hi, I'm a technical lead on Procella. You are correct that Artus shows a significant benefit over Capacitor primarily for point lookups and where indexes can b

Hi, I'm a technical lead on Procella. You are correct that Artus shows a significant benefit over Capacitor primarily for point lookups and where indexes can be used. However, we also see better scan performance with Artus today for a few reasons: 1) general purpose compression is used only on disk, not in memory. This decompression cost is then paid only at cache miss time, not on every scan, at the cost of larger in-cache sizes. 2) tighter integration with our evaluation engine allows us to, for example, directly use the on-disk dictionary and run-length encoding at evaluation time rather than just for pushdowns. This could be addressed as we continue to work with the Capacitor team. 3) Artus offers a much wider API surface (beyond just #2 above) and many more on-disk encodings (to some degree, forced by #1), allowing for more optimization opportunities at the cost of increased implementation and client complexity.