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

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(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>:
>
> Hello, sorry for the absence.
>
> At Fri, 11 Jan 2019 11:36:43 -0500, Robert Haas <robertmhaas(at)gmail(dot)com> wrote in <CA+TgmoYyxBgkfN_APBdxdutFMukb=P-EgGNY-NbauRcL7mGnmA(at)mail(dot)gmail(dot)com>
> > On Thu, Jan 10, 2019 at 9:10 PM Kohei KaiGai <kaigai(at)heterodb(dot)com> wrote:
> > > 2019年1月11日(金) 5:52 Robert Haas <robertmhaas(at)gmail(dot)com>:
> > > > On Wed, Jan 9, 2019 at 12:44 AM Kohei KaiGai <kaigai(at)heterodb(dot)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(at)heterodb(dot)com>