On Mon, Jan 24, 2022 at 10:45:48PM +0100, Tomas Vondra wrote: > On 1/24/22 22:28, Bossart, Nathan wrote: >>> Attached patch is fixing this by just sorting the XIDs logically. The >>> xidComparator is meant for places that can't do logical ordering. But >>> these XIDs come from RUNNING_XACTS, so they actually come from the same >>> wraparound epoch (so sorting logically seems perfectly fine). >> >> The patch looks reasonable to me. > > Thanks!
Could it be possible to add a TAP test? One idea would be to rely on pg_resetwal -x and -e close to the 4B limit to set up a node before stressing the scenario of this bug, so that would be rather cheap. -- Michael
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