Re: Introduce XID age and inactive timeout based replication slot invalidation

Nisha Moond <nisha.moond412@gmail.com>

From: Nisha Moond <nisha.moond412@gmail.com>

To: Amit Kapila <amit.kapila16@gmail.com>

Cc: Shlok Kyal <shlok.kyal.oss@gmail.com>, Peter Smith <smithpb2250@gmail.com>, vignesh C <vignesh21@gmail.com>, "Hayato Kuroda (Fujitsu)" <kuroda.hayato@fujitsu.com>, shveta malik <shveta.malik@gmail.com>, Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>, Ajin Cherian <itsajin@gmail.com>, Bertrand Drouvot <bertranddrouvot.pg@gmail.com>, Masahiko Sawada <sawada.mshk@gmail.com>, Nathan Bossart <nathandbossart@gmail.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2025-02-04T10:27:51Z

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 →

Add a test for commit ac0e33136a using the injection point.
- 8a695d7998be 18.0 landed
Invalidate inactive replication slots.
- ac0e33136abc 18.0 landed
Fix incorrect slot type in BuildTupleHashTableExt
- d96d1d5152f3 18.0 cited
Allow synced slots to have their inactive_since.
- 6f132ed693b6 17.0 landed
Change last_inactive_time to inactive_since in pg_replication_slots.
- 6d49c8d4b4f4 17.0 landed
Track last_inactive_time in pg_replication_slots.
- a11f330b5584 17.0 landed
Track invalidation_reason in pg_replication_slots.
- 6ae701b4378d 17.0 landed
Add option force_initdb to PostgreSQL::Test::Cluster:init()
- ff9e1e764fcc 17.0 cited
Add a failover option to subscriptions.
- 776621a5e479 17.0 cited
Allow setting failover property in the replication command.
- 73292404370c 17.0 cited
Allow to enable failover property for replication slots via SQL API.
- c393308b69d2 17.0 cited
Track conflict_reason in pg_replication_slots.
- 007693f2a3ac 17.0 cited
Log messages for replication slot acquisition and release.
- 7c3fb505b14e 17.0 cited
Remove vacuum_defer_cleanup_age
- 1118cd37eb61 16.0 cited
Fix corruption due to vacuum_defer_cleanup_age underflowing 64bit xids
- be504a3e974d 16.0 cited
meson: Add initial version of meson based build system
- e6927270cd18 16.0 cited

Attachments

v68-0001-Introduce-inactive_timeout-based-replication-slo.patch (application/octet-stream) patch v68-0001
v68-0002-Add-TAP-test-for-slot-invalidation-based-on-inac.patch (application/octet-stream) patch v68-0002

On Tue, Feb 4, 2025 at 10:45 AM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> On Mon, Feb 3, 2025 at 6:35 PM Shlok Kyal <shlok.kyal.oss@gmail.com> wrote:
> >
> > I reviewed the v66 patch. I have few comments:
> >
> > 1. I also feel the default value should be set to '0' as suggested by
> > Vignesh in 1st point of [1].
> >
>
> +1. This will ensure that the idle slots won't be invalidated by
> default, the same as HEAD. We can change the default value based on
> user inputs.
>

Here are the v68 patches, incorporating above as well as comments from [1].

Note: The 0003 patch with tests under PG_EXTRA_TESTS is not included
for now. If needed, I'll send it later once the first two patches are
committed.

[1] https://www.postgresql.org/message-id/CAHut%2BPv3mjQxmv5tHfgX%3Do%3D4C2TfX5rNYGS7xWrHBGcSVwr3mQ%40mail.gmail.com

--
Thanks,
Nisha