Andres Freund <andres@anarazel.de> writes:
> On April 15, 2022 2:14:47 PM EDT, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> I could use some help filling in the XXX comments, because it's far
>> from clear to me *why* walsenders need this to happen.
> If you want to commit before: The reason is that walsenders use their xmin to represent the xmin of standbys when
usinghot_standby_feedback. Since we're only transmitting global horizons up from standbys, it has to influence globally
(andit would be hard to represent per db horizons anyway).
Got it. I rewrote the comments and pushed. Noah, it should be safe
to turn wrasse back on.
regards, tom lane