On Fri, Nov 17, 2023 at 04:36:44PM -0500, Bruce Momjian wrote:
> On Fri, Nov 17, 2023 at 01:20:46PM -0800, Andres Freund wrote:
> > On 2023-11-17 15:39:14 -0300, Euler Taveira wrote:
> >
> > I think the connection between freezing and removal of commit timestamps is a
> > lot less direct that your suggested docs suggest. There can be no freezing and
> > we'll still remove timestamps (if tuples were deleted/updated). And tuples can
> > be frozen without the committs being truncated (if other tables have an older
> > relfrozenxid).
> >
> > The relevant limiting factor is minimum of all databases datfrozenxid. Which
> > in turn is limited by relfrozenxid of each table in said database. And
> > relfrozenxid is limited by snapshots (and prepared transactions, replication
> > slots, etc).
>
> Okay, I went with more weasel-wording in the attached patch.
Patch applied back to PG 16.
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
