On Fri, Apr 3, 2020 at 4:18 PM Peter Geoghegan <p...@bowt.ie> wrote: > OTOH, I wonder if it's possible that vacuum_defer_cleanup_age was > deliberately intended to affect the behavior of > XLogWalRcvSendHSFeedback(), which is probably one of the most common > reasons why GetOldestXmin() is called on standbys.
Pressed "send" too soon. vacuum_defer_cleanup_age *doesn't* get applied when recovery is in progress, so that definitely can't be true. Another hint that vacuum_defer_cleanup_age is only really supposed to be used on the primary is the fact that it appears under "18.6.1. Master Server" in the 9.1 docs. -- Peter Geoghegan
