Looks like #18672 has already been merged. It'll take a look nonetheless
and also catch up on #18671.
I'm also a fan of the FFI work :)

Best,
Kevin Liu

On Sun, Nov 23, 2025 at 6:36 PM Dewey Dunnington <[email protected]>
wrote:

> Thank you for taking this on!
>
> Apologies for catching this message late, but I'm a huge fan of the FFI
> work and I'm happy to review any of this (just give me a ping).
>
> Cheers,
>
> -dewey
>
> On Thu, Nov 20, 2025 at 3:23 PM Tim Saucer <[email protected]> wrote:
>
> > Hi,
> >
> > I'm looking for a volunteer to dive deep into the weeds of the FFI work
> > with me. Basically I have a working branch, tested against
> > datafusion-python that resolves a major hindrance. Right now we cannot
> use
> > user defined functions as expressions for filters on table providers or
> as
> > expressions for aggregation/windows.
> >
> > The fix for this is pretty big and disruptive, but will resolve this
> issue
> > and open the door for logical and physical decoding extensions. That's
> > something that the distributed work will benefit from.
> >
> > What I'm looking for: Someone to dive deep and go through the reviews
> I've
> > got lined up. In the end I'm breaking it up into about 6 or 7 PRs to try
> to
> > keep each one manageable. The full diff against main is 6k lines. The
> first
> > PR has already merged.
> >
> > The governing issue is:
> https://github.com/apache/datafusion/issues/18671
> >
> > The next up PR is ready for review:
> > https://github.com/apache/datafusion/pull/18672
> >
> > Best,
> > Tim
> >
>

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