Horton

Re: speed up a logical replica setup

Fabrízio de Royes Mello <fabriziomello@gmail.com>

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From: Fabrízio de Royes Mello <fabriziomello@gmail.com>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: Euler Taveira <euler@eulerto.com>, vignesh C <vignesh21@gmail.com>, Peter Eisentraut <peter@eisentraut.org>, Shlok Kyal <shlok.kyal.oss@gmail.com>, "kuroda.hayato@fujitsu.com" <kuroda.hayato@fujitsu.com>, Tomas Vondra <tomas.vondra@enterprisedb.com>, "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>, Michael Paquier <michael@paquier.xyz>, Andres Freund <andres@anarazel.de>, Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Date: 2024-03-22T04:13:55Z
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 →

  1. pg_createsubscriber: Remove obsolete comment

  2. pg_createsubscriber: Fix an unpredictable recovery wait time.

  3. Fix unstable test in 040_pg_createsubscriber.

  4. Fix the testcase introduced in commit 81d20fbf7a.

  5. Further weaken new pg_createsubscriber test on Windows.

  6. Temporarily(?) weaken new pg_createsubscriber test on Windows.

  7. Make pg_createsubscriber warn if publisher has two-phase commit enabled.

  8. Make pg_createsubscriber more wary about quoting connection parameters.

  9. pg_createsubscriber: Remove failover replication slots on subscriber

  10. pg_createsubscriber: Remove replication slot check on primary

  11. pg_createsubscriber: Only --recovery-timeout controls the end of recovery process

  12. pg_createsubscriber: creates a new logical replica from a standby server

  13. Add some const decorations

  14. Add option force_initdb to PostgreSQL::Test::Cluster:init()

  15. Remove MSVC scripts

On Fri, Mar 22, 2024 at 12:54 AM Amit Kapila <amit.kapila16@gmail.com>
wrote:
>
>
> The user choosing to convert a physical standby to a subscriber would
> in some cases be interested in converting it for all the databases
> (say for the case of upgrade [1]) and giving options for each database
> would be cumbersome for her.
>
> ...
>
> [1] - This tool can be used in an upgrade where the user first
> converts physical standby to subscriber to get incremental changes and
> then performs an online upgrade.
>

The first use case me and Euler discussed some time ago to upstream this
tool was exactly what Amit described so IMHO we should make it easier for
users to subscribe to all existing user databases.

Regards,

--
Fabrízio de Royes Mello