Re: type cache cleanup improvements

Alexander Korotkov <aekorotkov@gmail.com>

From: Alexander Korotkov <aekorotkov@gmail.com>

To: Andres Freund <andres@anarazel.de>

Cc: Pavel Borisov <pashkin.elfe@gmail.com>, Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>, Andrei Lepikhov <lepihov@gmail.com>, jian he <jian.universality@gmail.com>, Artur Zakirov <zaartur@gmail.com>, Alexander Lakhin <exclusion@gmail.com>, Teodor Sigaev <teodor@sigaev.ru>, Pgsql Hackers <pgsql-hackers@postgresql.org>, Aleksander Alekseev <aleksander@timescale.com>, Tom Lane <tgl@sss.pgh.pa.us>, Michael Paquier <michael@paquier.xyz>

Date: 2024-10-25T10:13:29Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Maintain RelIdToTypeIdCacheHash in TypeCacheOpcCallback()
- bb78e4267817 18.0 landed
Fix concurrrently in typcache_rel_type_cache.sql
- aa1e898dea66 18.0 landed
Avoid looping over all type cache entries in TypeCacheRelCallback()
- b85a9d046efd 18.0 landed
- c14d4acb8134 18.0 landed
Update header comment for lookup_type_cache()
- c1500a1ba7e1 18.0 landed
Revert: Avoid looping over all type cache entries in TypeCacheRelCallback()
- 8daa62a10c91 18.0 landed
Introduce hash_search_with_hash_value() function
- d0f020037e19 18.0 landed
Optimize InvalidateAttoptCacheCallback() and TypeCacheTypCallback()
- 40064a8ee1b3 18.0 landed
Refactor initial hash lookup in dynahash.c
- cc5ef90edd80 17.0 landed
Rationalize and improve error messages for some jsonpath items
- 92d2ab7554f9 17.0 cited
Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY.
- fdd965d074d4 15.0 cited
Represent Lists as expansible arrays, not chains of cons-cells.
- 1cff1b95ab6d 13.0 cited

On Fri, Oct 25, 2024 at 12:48 PM Alexander Korotkov
<aekorotkov@gmail.com> wrote:
> On Fri, Oct 25, 2024 at 11:35 AM Andres Freund <andres@anarazel.de> wrote:
> > On 2024-10-22 20:33:24 +0300, Alexander Korotkov wrote:
> > > Thank you, Pavel!  0001 revised according to your suggestion.
> >
> > Starting with this commit CI fails.
> >
> > https://cirrus-ci.com/task/6668851469877248
> > https://api.cirrus-ci.com/v1/artifact/task/6668851469877248/testrun/build/testrun/regress-running/regress/regression.diffs
> >
> > diff -U3 /tmp/cirrus-ci-build/src/test/regress/expected/inherit.out /tmp/cirrus-ci-build/build/testrun/regress-running/regress/results/inherit.out
> > --- /tmp/cirrus-ci-build/src/test/regress/expected/inherit.out  2024-10-24 11:38:43.829712000 +0000
> > +++ /tmp/cirrus-ci-build/build/testrun/regress-running/regress/results/inherit.out      2024-10-24 11:44:57.154238000 +0000
> > @@ -1338,14 +1338,9 @@
> >  ERROR:  cannot drop inherited constraint "f1_pos" of relation "p1_c1"
> >  alter table p1 drop constraint f1_pos;
> >  \d p1_c1
> > -               Table "public.p1_c1"
> > - Column |  Type   | Collation | Nullable | Default
> > ---------+---------+-----------+----------+---------
> > - f1     | integer |           |          |
> > -Check constraints:
> > -    "f1_pos" CHECK (f1 > 0)
> > -Inherits: p1
> > -
> > +ERROR:  error triggered for injection point typecache-before-rel-type-cache-insert
> > +LINE 4: ORDER BY 1;
> > +                 ^
> >  drop table p1 cascade;
> >  NOTICE:  drop cascades to table p1_c1
> >  create table p1(f1 int constraint f1_pos CHECK (f1 > 0));
>
> Thank you for reporting this.
> Looks weird that injection point, which isn't used in these tests, got
> triggered here.
> I'm looking into this.

Oh, I forgot to make injection points in typcache_rel_type_cache.sql
local.  Thus, it affects concurrent tests.  Must be fixed in
aa1e898dea.

------
Regards,
Alexander Korotkov
Supabase