On Wed, Mar 16, 2022 at 05:43:48PM +0900, Michael Paquier wrote: > So, I have looked at this second part of the thread, and concluded > that we should not fail for empty pages. First, we fetch pages from > the buffer pool in normal mode, where empty pages are valid. There is > also a second point in favor of doing so: code paths dedicated to hash > indexes already do that, marking such pages as simply "unused". The > proposal from Julien upthread sounds cleaner to me though in the long > run, as NULL gives the user the possibility to do a full-table scan > with simple clauses to filter out anything found as NULL.
It has been a couple of weeks, but I have been able to come back to this set of issues for all-zero pages, double-checked the whole and applied a set of fixes down to 10. So we should be completely done here. -- Michael
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