Re: TODO item: Allow more complex user/database default GUC settings

Bernd Helmle escribió:
>
>
> --On 30. September 2009 13:19:53 -0400 Alvaro Herrera
> <alvherre(at)commandprompt(dot)com> wrote:
>
> >>I think it would be helpful if you could post ONE patch with all the
> >>changes and all the new files in the diff. AIUI, "the" patch is now
> >>split across three separate emails. :-(
> >
> >That's correct, here it is.
>
> Some additional notes:
>
> - ALTER ROLE ... IN DATABASE is missing some documentation. If you
> want, i can work on this.

Please.

> - The patch as is has still some locking problems (AlterRoleSet()
> has a XXX about that): I've managed to create dead entries for a
> role or a database in pg_db_role_setting while altering and dropping
> a role/database in two concurrent sessions.

Yeah, I was playing with that too. I think we need a few extra
LockSharedObject calls, and not only in the new code :-( (This troubles
me in the case of databases, because we already grab a lock on it during
connection establishing, so this could cause extra contention there.)

--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support