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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