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: vignesh C <vignesh21@gmail.com>

Cc: Peter Smith <smithpb2250@gmail.com>, "Hayato Kuroda (Fujitsu)" <kuroda.hayato@fujitsu.com>, shveta malik <shveta.malik@gmail.com>, Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>, Amit Kapila <amit.kapila16@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: 2024-12-10T11:51:09Z

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

v54-0001-Enhance-replication-slot-error-handling-slot-inv.patch (application/x-patch) patch v54-0001
v54-0002-Introduce-inactive_timeout-based-replication-slo.patch (application/x-patch) patch v54-0002

On Fri, Dec 6, 2024 at 11:04 AM vignesh C <vignesh21@gmail.com> wrote:
>
>
> Determining the correct time may be challenging for users, as it
> depends on when the active_since value is set, as well as when the
> checkpoint_timeout occurs and the subsequent checkpoint is triggered.
> Even if the user sets it to an appropriate value, there is still a
> possibility of delayed identification due to the timing of when the
> slot's active_timeout is being set. Including this information in the
> documentation should be sufficient.
>

+1
v54 documents this information as suggested.

Attached the v54 patch-set addressing all the comments till now in
[1], [2] and [3].

[1] https://www.postgresql.org/message-id/CALDaNm0mTWwg0z4v-sorq08S2CdZmL2s%2Brh4nHpWeJaBQ2F%2Bmg%40mail.gmail.com
[2] https://www.postgresql.org/message-id/CALDaNm1STyk%3DS_EAihWP9SowBkS5dJ32JfEqmG5tTeC2Ct39yg%40mail.gmail.com
[3] https://www.postgresql.org/message-id/CAHut%2BPtHbYNxPvtMfs7jARbsVcFXL1%3DC9SO3Q93NgVDgbKN7LQ%40mail.gmail.com

--
Thanks,
Nisha