> On 26 Aug 2021, at 15:09, Bruce Momjian <br...@momjian.us> wrote: > On Thu, Aug 26, 2021 at 03:24:33PM +0800, Julien Rouhaud wrote:
>> .. I still think that >> changing bgworker_should_start_now() is a better option. > > I am not sure. We have a lot of pg_upgrade code that turns off things > like autovacuum and that has worked fine: True, but there are also conditionals on IsBinaryUpgrade for starting the autovacuum launcher in the postmaster, so there is some precedent. > Basically, pg_upgrade has avoided any backend changes that could be > controlled by GUCs and I am not sure we want to start adding such > changes for just this. In principle I think it’s sound to try to avoid backend changes where possible without sacrificing robustness. -- Daniel Gustafsson https://vmware.com/
