Well done Jarek and Iliya :)

Shahar

On Mon, Aug 11, 2025 at 5:42 PM Pavankumar Gopidesu <gopidesupa...@gmail.com>
wrote:

> Woohoo great work both. That's indeed a lot of effort :)
>
> Pavan
>
>
> On Mon, Aug 11, 2025 at 6:03 AM Dev iL <gid....@gmail.com> wrote:
>
> > Thanks for the shout-out, and your patient guidance throughout this
> > process, Jarek :)
> >
> > At multiple steps along the way this PR grew so large that parts of it
> had
> > to be split out into "sub-PRs" - so in addition to the main one, there
> were
> > also 6 sub-PRs by yours truly and another one by Jarek.
> >
> > One of the (currently undocumented) additions in this collection of PRs
> is
> > a new environment variable, SQLALCHEMY_ENGINE_DEBUG, which when set,
> > enables verbose logging for sqlalchemy, as well as dumping a snapshot of
> > the callstack once every few minutes (the delay is only configurable via
> > hard-coding currently). This was particularly helpful in diagnosing db
> > hangs/timeouts. Another PR reconfigured some unit tests, which were
> > asserting things about text appearing in stdout/stderr, to ignore logging
> > prints that come from the aforementioned verbosity - so that tests
> doesn't
> > fail due to the extra logs. As a side note, while this capability was
> made
> > with the CI in mind, I didn't get a chance to try it there, so YMMV.
> >
> > Iliya
> >
> > P.S.
> > Since we now support SQLA2 in at least one configuration, my next project
> > is adding psycopg v3 support. This is easier than I envisioned initially,
> > since v3 can be installed alongside v2 due to having a different package
> > name. We'll see how it goes...
> >
> >
> > On Mon, 11 Aug 2025, 0:16 Jarek Potiuk, <ja...@potiuk.com> wrote:
> >
> > > Thanks to Herculean work of Ilya - and with a little bit of my help we
> > now
> > > have SQLALchemy 2 tests running in our "canary builds" now.
> > >
> > > Currently (until FAB 5) they only run in "canary" builds and only in
> > Python
> > > 3,13 (because that's where we have no FAB) but it will allow us to see
> if
> > > we do not add anything "not working" for sqlalchemy 2.
> > >
> > > That was a bit of a difficult one - because SQLA2 hanged with MySQL for
> > our
> > > migrations, in a strange way that did not allow us to easily inspect
> the
> > > problem - we've worked together with Ilya and I added wya better
> > > diagnostics for this case - yet eventually Ilya solved it by adding
> > > autocommit while running the migration - which seemed to help :).
> > >
> > > More to come soon when we get to FAB 5 upgrade - we might be able to
> > > migrate to sqlalchemy 2 for 3.1 (keep fingers crossed). FAB 5 alpha 9
> has
> > > been recently released by daniel and we are about to take it for a
> spin.
> > >
> > > J.
> > >
> >
>

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