Darnit, acquired by Apple and shutdown!? I didn't even know! Thanks for the link. His critique is actually the first I've seen on their tech. He speculates quite a bit despite them giving plenty of detail and claiming to use many of same choices as Google's F1. If they failed, I'd love to know in detail how to improve on their successes. Some of his gripes have obvious work-arounds with others probably having work-arounds.

That said, I think props still go to Google's teams on GFS, Spanner, and F1 as the best techs out there. A F1 variant, which two teams are trying, is best approach given it's proven and with much published detail.