Re: Doubt about AccessExclusiveLock in ALTER TABLE .. SET ( .. );

On Wed, Aug 5, 2015 at 9:31 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>
> On Tue, Aug 4, 2015 at 1:15 PM, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
wrote:
> > That opens up for lock escalation and deadlocks, doesn't it? You are
> > probably thinking that it's okay to ignore those but I don't necessarily
> > agree with that.
>
> Agreed. I think we're making a mountain out of a molehill here. As
> long as the locks that are actually used are monotonic, just use > and
> stick a comment in there explaining that it could need adjustment if
> we use other lock levels in the future. I presume all the lock-levels
> used for DDL are, and will always be, self-exclusive, so why all this
> hand-wringing?
>

New version attached with suggested changes.

Regards,

--
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