Re: Autovacuum cancellation

Tom Lane wrote:
> Gregory Stark <stark(at)enterprisedb(dot)com> writes:

> > I think there's a window where the process waiting directly on
> > autovacuum could have already fired its deadlock check before it was
> > waiting directly on autovacuum.
>
> I think you don't understand what that code is doing. If there's an
> autovac anywhere in the dependency graph, it'll find it.

Thanks for making that explicit, I was trying to build a test case where
it would lock :-)

(If we had concurrent psql we could even have it in the regression tests
...)

--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.