Re: Parallel safety tagging of extension functions

Tom Lane wrote:
> Michael Paquier <michael.paquier@gmail.com> writes:
> > On Sat, May 21, 2016 at 6:16 PM, Andreas Karlsson <andreas@proxel.se> wrote:
> >> My immediate thought is first doing an UPDATE of pg_proc and then updating
> >> the catcache with CREATE OR REPLACE with the new arguments. Does that work?
> >> Is there a less ugly way to accomplish this?
> 
> > Isn't it better to just drop and recreate the function? pageinspect
> > did so for example for heap_page_items in 1.4 to update its OUT
> > arguments.
> 
> You'd have to alter the index opfamily to disconnect the function from it,
> drop/recreate the function, then re-add it to the opfamily.  Kind of icky,
> but probably better than the alternatives.

What happens if the upgraded database contains indexes using those
opfamilies?  I suppose getting such indexes dropped because of ALTER
EXTENSION UPDATE is not very nice.

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Álvaro Herrera                http://www.2ndQuadrant.com/
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