Yeah, README.HOT should have been updated, and I see no reason not to backpatch this to v16. Barring objections, I'll do that tomorrow.
I have two suggesting regarding the README.HOT changes: 1) I'm not entirely sure it's very clear what "referential integrity of indexes across tuple updates" actually means. I'm afraid "referential integrity" may lead readers to think about foreign keys. Maybe it'd be better to explain this is about having index pointers to the new tuple version, etc. 2) Wouldn't it be good to make it a bit more explicit we now have three "levels" of HOT: (a) no indexes need update (b) update only summarizing indexes (c) update all indexes The original text was really about on/off, and I'm not quite sure the part about "exception" makes this very clear. regards -- Tomas Vondra EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
