On Wed, Oct 7, 2020 at 7:48 PM Peter Geoghegan <p...@bowt.ie> wrote: > To be blunt: It may be controversial that we're accessing multiple > heap pages while holding an exclusive lock on a leaf page, in the > hopes that we can avoid a page split, but without any certainty that > it'll work out.
That certainly isn't great. I mean, it might be not be too terrible, because it's a leaf index page isn't nearly as potentially hot as a VM page or a clog page, but it hurts interruptibility and risks hurting concurrency, but if it were possible to arrange to hold only a pin on the page during all this rather than a lock, it would be better. I'm not sure how realistic that is, though. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
