Re: BUG #17255: Server crashes in index_delete_sort_cmp() due to race condition with vacuum - Mailing list pgsql-bugs

Hi,

On 2021-11-12 13:11:54 -0800, Peter Geoghegan wrote:
> Attached revision does it that way.

I wonder if we should try to go for something considerably simpler for 14. How
about having a new array that just stores the HTSV state for every
ItemIdIsNormal(). For simplicity, we could populate that array eagerly in a
separate loop.

That'd fix the known bugs, and yield better efficiency (because we'd not
re-compute HTSV all the time). Then for HEAD go for something that fixes
pruning more fundamentally.

Greetings,

Andres Freund