| From: | "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com> |
|---|---|
| To: | 'vignesh C' <vignesh21(at)gmail(dot)com>, shveta malik <shveta(dot)malik(at)gmail(dot)com> |
| Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | RE: sequencesync worker race with REFRESH SEQUENCES |
| Date: | 2026-07-22 06:28:18 |
| Message-ID: | OS9PR01MB12149488D158FF69F7D1F200FF5C12@OS9PR01MB12149.jpnprd01.prod.outlook.com |
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| Lists: | pgsql-hackers |
Dear Vignesh,
> The attached patch has the changes for the same. This patch also fixes
> the issue reported by Kuroda-san at [1].
Thanks for updating the patch. I confirmed after applying your patch, the ALTER
SUBSCRIPTION could raise an ERROR like:
```
postgres=# ALTER SERVER server OPTIONS (SET port '5434');
ALTER SERVER
postgres=# ALTER SUBSCRIPTION sub REFRESH SEQUENCES ;
ERROR: cannot synchronize sequences if the publisher is running a version earlier than PostgreSQL 19
```
... because the backend always confirms the remove version before updating the local catalog.
I have no comments anymore.
Best regards,
Hayato Kuroda
FUJITSU LIMITED
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