Hi,
On 2023-06-26 21:53:12 -0700, Peter Geoghegan wrote:
> It should be safe to allow searchers to see a version of the root page
> that is out of date. The Lehman & Yao design is very permissive about
> these things. There aren't any special cases where the general rules
> are weakened in some way that might complicate this approach.
> Searchers need to check the high key to determine if they need to move
> right -- same as always.
Wouldn't we at least need a pin on the root page, or hold a snapshot, to
defend against page deletions?
Greetings,
Andres Freund