On 2015-07-13 15:50:44 -0500, Jim Nasby wrote:
> Another possibility is some kind of a page-level indicator of what binary
> format is in use on a given page. For checksums maybe a single bit would
> suffice (indicating that you should verify the page checksum). Another use
> case is using this to finally ditch all the old VACUUM FULL code in
> HeapTupleSatisfies*().
That's a bad idea, because that bit then'd not be protected by the
checksum.
