Excerpts from Robert Haas's message of mié nov 23 12:15:55 -0300 2011:
> > And it effects shared catalogs only, which are all low traffic anyway.
>
> I think "low traffic" is the key point. I understand that you're not
> changing the VACUUM behavior, but you are making heap_page_prune_opt()
> not do anything when a shared catalog is involved. That would be
> unacceptable if we expected shared catalogs to be updated frequently,
> either now or in the future, but I guess we don't expect that.
Maybe not pg_database or pg_tablespace and such, but I'm not so sure
about pg_shdepend. (Do we record pg_shdepend entries for temp tables?)
--
Álvaro Herrera <alvherre@commandprompt.com>
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