On 2020-Aug-05, Andres Freund wrote: > I'm mildly against that, because I'd really like to start making use of > the flag. Not so much for cancellations, but to avoid the drastic impact > analyze has on bloat. In OLTP workloads with big tables, and without > disabled cost limiting for analyze (or slow IO), the snapshot that > analyze holds is often by far the transaction with the oldest xmin.
I pushed despite the objection because it seemed that downstream discussion was largely favorable to the change, and there's a different proposal to solve the bloat problem for analyze; and also: > Only mildly against because it'd not be hard to reintroduce once we need > it. Thanks for the discussion! -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
