RE: Slow catchup of 2PC (twophase) transactions on replica in LR

Hayato Kuroda (Fujitsu) <kuroda.hayato@fujitsu.com>

From: "Hayato Kuroda (Fujitsu)" <kuroda.hayato@fujitsu.com>

To: "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>

Cc: Vitaly Davydov <v.davydov@postgrespro.ru>, Ajin Cherian <itsajin@gmail.com>, 'Amit Kapila' <amit.kapila16@gmail.com>

Date: 2024-07-09T12:52:55Z

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 →

Fix random failure in 021_twophase.
- 0dcea330babd 18.0 landed
Allow altering of two_phase option of a SUBSCRIPTION.
- 1462aad2e447 18.0 landed
Doc: use true|false rather than on|off for "failover" option
- fa65a022db26 17.0 cited
Support an optional asynchronous commit mode, in which we don't flush WAL
- 4a78cdeb6b59 8.3.0 cited

Attachments

v17-0001-Allow-altering-of-two_phase-option-of-a-SUBSCRIP.patch (application/octet-stream) patch v17-0001
v17-0002-Alter-slot-option-two_phase-only-when-altering-t.patch (application/octet-stream) patch v17-0002
v17-0003-Notify-users-to-roll-back-prepared-transactions.patch (application/octet-stream) patch v17-0003

> 0001 - Codes for SUBOPT_TWOPHASE_COMMIT are moved per requirement [1].
>        Also, checks for failover and two_phase are unified into one function.
> 0002 - updated accordingly. An argument for the check function is added.
> 0003 - this contains documentation changes required in [2].

Previous patch set could not be accepted due to the initialization miss.
PSA new version. 

Best Regards,
Hayato Kuroda
FUJITSU LIMITED
https://www.fujitsu.com/