In case anyone is interested in the topic in general or DataFusion in particular, I plan a tech talk [1] next week about "Query Engine Design and the Rust based DataFusion in Apache Arrow."
If you are curious how (SQL) query engines in general are structured, I plan to describe the typical high level architecture, using DataFusion as an exemplar. It will be held next Wednesday, March 10, 2021 at 8:00 am PST | 4:00 pm GMT, and posted publicly afterwards. Andrew [1] https://www.influxdata.com/community-showcase/influxdb-tech-talks/
