Re: Disallow cancellation of waiting for synchronous replication

Andrey Borodin <x4mmm@yandex-team.ru> writes:
> I think proper solution here would be to add GUC to disallow cancellation of synchronous replication.

This sounds entirely insane to me.  There is no possibility that you
can prevent a failure from occurring at this step.

> Three is still a problem when backend is not canceled, but terminated [2].

Exactly.  If you don't have a fix that handles that case, you don't have
anything.  In fact, you've arguably made things worse, by increasing the
temptation to terminate or "kill -9" the nonresponsive session.

            regards, tom lane