On 2019-Sep-20, Tom Lane wrote: > Actually, what I did was as attached [1], and I am getting traces like > [2]. The problem seems to occur only when there are two or three > processes concurrently creating the same snapshot file. It's not > obvious from the debug trace, but the snapshot file *does* exist > after the music stops.
Uh .. I didn't think it was possible that we would build the same snapshot file more than once. Isn't that a waste of time anyway? Maybe we can fix the symptom by just not doing that in the first place? I don't have a strategy to do that, but seems worth considering before retiring the bf animals. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services