Re: PG 14 release notes, first draft

On Tue, May 18, 2021 at 08:34:55AM -0700, Peter Geoghegan wrote:
> In my opinion this should be interpreted as already handled by the
> backpatch to 13.3, and so not necessary to handle again now -- despite
> the GUC thing. It's possible that no users set the GUC at all, because
> it wasn't particularly well thought out. This entire situation is
> probably unprecedented (we just don't deprecate reloptions very
> often), so I defer to your judgement, Bruce.

I am thiking the vacuum_cleanup_index_scale_factor existance in a PG 14
postgresql.conf will throw an error, unlike 13.x, so I do think we need
to mention this so people will know to remove it from their
postgresql.conf before upgrades, right?  I don't think the PG 13.3
release note mention really makes it clear it has to be removed.  In a
dump/restore, so we retain the reloption
vacuum_cleanup_index_scale_factor and just ignore it, or drop it on
restore?  I am hoping it is the later.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  If only the physical world exists, free will is an illusion.