Re: Disallow cancellation of waiting for synchronous replication

On Sat, Dec 28, 2019 at 6:19 PM Maksim Milyutin <milyutinma(at)gmail(dot)com> wrote:
> The stuckness of backend is not deadlock here. To cancel waiting of
> backend fluently, client is enough to turn off synchronous replication
> (change synchronous_standby_names through server reload) or change
> synchronous replica to another livable one (again through changing of
> synchronous_standby_names). In first case he explicitly agrees with
> existence of local (not replicated) commits in master.

Sure, that's true. But I still maintain that responding to ^C is an
important property of the system. If you have to do some more
complicated set of steps like the ones you propose here, a decent
number of people aren't going to figure it out and will end up
unhappy. Now, as it is, you're unhappy, so I guess you can't please
everyone, but you asked for opinions so I'm giving you mine.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company