> In theory, until any tuple on the page is inserted/updated/deleted
> again. However, we've been operating on the assumption that it's always
> safe to clear any bit in the visibility map, without affecting
> correctness. I would not like to give up that assumption, it makes life
> easier.
It wouldn't affect correctness, it would just force that page to be
vacuumed-and-frozen. I think I can make this work, let me just hammer
it out.
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com
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