Re: Change log level for notifying hot standby is waiting non-overflowed snapshot

On 2025/03/31 22:44, torikoshia wrote:
> Here are some comments on the documentation.

Thanks for the review!


> The following description in high-availability.sgml also seems to misuse the word 'consistent':
> 
>    When the <xref linkend="guc-hot-standby"/> parameter is set to true on a
>    standby server, it will begin accepting connections once the recovery has
>    brought the system to a consistent state.
> 
> Since this is part of the "User's Overview" section, it may not be appropriate to include too much detail.
> How about rewording it to avoid using 'consistent', for example:
> 
>    When the <xref linkend="guc-hot-standby"/> parameter is set to true on a
>    standby server, it will begin accepting connections once it is ready.

"once it is ready." feels too vague to me. How about using
"once recovery has brought the system to a consistent state and
be ready for hot standby." instead?


> +    delaying accepting read-only connections.  To enable hot standby,
> +    a long-lived write transaction with more than 64 subtransactions
> +    needs to be closed on the primary.
> 
> Is it better to use 'transactions' in the plural form rather than as a nominal?
> 
> - There may be more than one such transaction.
> - The <itemizedlist> below also uses the plural form.
> - The newly added message also uses the plural form:
>    + errhint("To enable hot standby, close write transactions with more than %d subtransactions on the primary server."
> 
> 
> What do you think?

I'm not sure whether the plural form is better here, but I've updated
the patch as suggested. Attached is the revised version.

Regards,

-- 
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION