Re: [PATCH] Backport perl tests for pg_upgrade from 322becb60

On Mon, Aug 01, 2022 at 01:02:21AM +0300, Anton A. Melnikov wrote:
> As far as i understand from this thread: https://www.postgresql.org/message-id/flat/Yox1ME99GhAemMq1%40paquier.xyz,
> the aim of the perl version for the pg_upgrade tests is to achieve equality of dumps for most cross-versions cases.
> If so this is the significant improvement as previously in test.sh resulted dumps retained unequal and the user
> was asked to eyeball them manually during cross upgrades between different major versions.
> So, the backport of the perl tests also seems preferable to me.

I don't really agree with that.  These TAP tests are really new
development, and it took a few tries to get them completely right
(well, as much right as it holds for HEAD).  If we were to backport
any of this, there is a risk of introducing a bug in what we do with
any of that, potentially hiding a issue critical related to
pg_upgrade.  That's not worth taking a risk for.

Saying that, I agree that more needs to be done, but I would limit
that only to HEAD and let it mature more into the tree in an
incremental fashion.
--
Michael