ср, 28 окт. 2020 г. в 19:44, Alexander Kukushkin <cyberdemn(at)gmail(dot)com>:
> I know, nobody in their mind should do that, but, if the postmaster
> process is killed with SIGKILL signal, most backend processes
> correctly notice the fact of the postmaster process absence and exit.
> There is one exception though, when there are autovacuum worker
> processes they are continuing to run until eventually finish and exit.
>
> …
>
> I was able to reproduce it with 13.0 and 12.4, and I believe older
> versions are also affected.
>
Do you get the same behaviour also on master?
As there was some work in this area for 14, see
https://git.postgresql.org/pg/commitdiff/44fc6e259b
--
Victor Yegorov