Re: add_partial_path() may remove dominated path but still in use
Robert Haas <robertmhaas@gmail.com>
From: Robert Haas <robertmhaas@gmail.com>
To: Kohei KaiGai <kaigai@heterodb.com>
Cc: Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>,
Tom Lane <tgl@sss.pgh.pa.us>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2019-01-10T20:52:02Z
Lists: pgsql-hackers
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. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
Commits
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Call set_rel_pathlist_hook before generate_gather_paths, not after.
- dc0eb137fec2 10.7 landed
- 6401583863ea 12.0 landed
- 6257f525aff4 9.6.12 landed
- 027b5a300a9e 11.2 landed