| From: | "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com> |
|---|---|
| To: | 'Shlok Kyal' <shlok(dot)kyal(dot)oss(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
| Cc: | Fabrice Chapuis <fabrice636861(at)gmail(dot)com>, Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com>, Rahila Syed <rahilasyed90(at)gmail(dot)com>, Alexander Kukushkin <cyberdemn(at)gmail(dot)com>, "Zhijie Hou (Fujitsu)" <houzj(dot)fnst(at)fujitsu(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | RE: issue with synchronized_standby_slots |
| Date: | 2025-10-24 07:54:30 |
| Message-ID: | OSCPR01MB1496675D9BFD519DA57A98368F5F1A@OSCPR01MB14966.jpnprd01.prod.outlook.com |
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| Lists: | pgsql-hackers |
Dear Shlok,
```
-- Can set synchronized_standby_slots to a non-existent slot name.
ALTER SYSTEM SET synchronized_standby_slots='missing';
SELECT pg_reload_conf();
-- Reset the GUC.
ALTER SYSTEM RESET synchronized_standby_slots;
SELECT pg_reload_conf();
```
pg_reload_conf() is called twice here but I'm not sure it is really needed.
ALTER SYSTEM itself can validate parameters via parse_and_validate_value(elevel=ERROR),
and pg_reload_conf() won't affect synchronously. Also, the backend won't output
even if the parameter is invalid.
Best regards,
Hayato Kuroda
FUJITSU LIMITED
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