Re: add_partial_path() may remove dominated path but still in use

Hello,

Let me remind the thread again.
I'm waiting for the fix getting committed for a month...

2019年1月22日(火) 20:50 Kohei KaiGai <kaigai@heterodb.com>:
>
> Let me remind the thread.
> If no more comments, objections, or better ideas, please commit this fix.
>
> Thanks,
>
> 2019年1月17日(木) 18:29 Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>:
> >
> > Hello, sorry for the absence.
> >
> > At Fri, 11 Jan 2019 11:36:43 -0500, Robert Haas <robertmhaas@gmail.com> wrote in
<CA+TgmoYyxBgkfN_APBdxdutFMukb=P-EgGNY-NbauRcL7mGnmA@mail.gmail.com>
> > > On Thu, Jan 10, 2019 at 9:10 PM Kohei KaiGai <kaigai@heterodb.com> wrote:
> > > > 2019年1月11日(金) 5:52 Robert Haas <robertmhaas@gmail.com>:
> > > > > On Wed, Jan 9, 2019 at 12:44 AM Kohei KaiGai <kaigai@heterodb.com> wrote:
> > > > > > So, is it sufficient if set_rel_pathlist_hook is just relocated in
> > > > > > front of the generate_gather_paths?
> > > > > > If we have no use case for the second hook, here is little necessity
> > > > > > to have the post_rel_pathlist_hook() here.
> > > > > > (At least, PG-Strom will use the first hook only.)
> > > > >
> > > > > +1.  That seems like the best way to be consistent with the principle
> > > > > that we need to have all the partial paths before generating any
> > > > > Gather paths.
> > > > >
> > > > Patch was updated, just for relocation of the set_rel_pathlist_hook.
> > > > Please check it.
> > >
> > > Seems reasonable to me.
> >
> > Also seems reasonable to me.  The extension can call
> > generate_gather_paths redundantly as is but it almost doesn't
> > harm, so it is acceptable even in a minor release.
> >
> > regards.
> >
> > --
> > Kyotaro Horiguchi
> > NTT Open Source Software Center
> >
>
>
> --
> HeteroDB, Inc / The PG-Strom Project
> KaiGai Kohei <kaigai@heterodb.com>

--
HeteroDB, Inc / The PG-Strom Project
KaiGai Kohei <kaigai@heterodb.com>