On Tue, Apr 22, 2025 at 11:03:29PM +0200, Christoph Berg wrote:
> Re: Nathan Bossart
>> In any case, IMO it's unfortunate
>> that we might end up recommending roughly the same post-upgrade steps as
>> before even though the optimizer statistics are carried over.
>
> Maybe the docs (and the pg_upgrade scripts) should recommend the old
> procedure by default until this gap is closed? People could then still
> opt to use the new procedure in specific cases.
I think we'd still want to modify the --analyze-in-stages recommendation
(from what is currently recommended for supported versions). If we don't,
you'll wipe out the optimizer stats you brought over from the old version.
Here is a rough draft of what I am thinking.
--
nathan