| From: | Peter Eisentraut <peter(at)eisentraut(dot)org> |
|---|---|
| To: | Shlok Kyal <shlok(dot)kyal(dot)oss(at)gmail(dot)com>, Euler Taveira <euler(at)eulerto(dot)com> |
| Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, "kuroda(dot)hayato(at)fujitsu(dot)com" <kuroda(dot)hayato(at)fujitsu(dot)com>, Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Michael Paquier <michael(at)paquier(dot)xyz>, Andres Freund <andres(at)anarazel(dot)de>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Fabrízio de Royes Mello <fabriziomello(at)gmail(dot)com>, vignesh C <vignesh21(at)gmail(dot)com> |
| Subject: | Re: speed up a logical replica setup |
| Date: | 2024-03-19 11:57:36 |
| Message-ID: | 2abb05b6-9173-45a7-a5dc-0f4cf2a4c7f4@eisentraut.org |
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| Lists: | pgsql-hackers |
On 19.03.24 12:26, Shlok Kyal wrote:
>> I'm attaching a new version (v30) that adds:
>>
>> * 3 new options (--publication, --subscription, --replication-slot) to assign
>> names to the objects. The --database option used to ignore duplicate names,
>> however, since these new options rely on the number of database options to
>> match the number of object name options, it is forbidden from now on. The
>> duplication is also forbidden for the object names to avoid errors earlier.
>> * rewrite the paragraph related to unusuable target server after
>> pg_createsubscriber fails.
>> * Vignesh reported an issue [1] related to reaching the recovery stop point
>> before the consistent state is reached. I proposed a simple patch that fixes
>> the issue.
>>
>> [1] https://www.postgresql.org/message-id/CALDaNm3VMOi0GugGvhk3motghaFRKSWMCSE2t3YX1e%2BMttToxg%40mail.gmail.com
>>
>
> I have added a top-up patch v30-0003. The issue in [1] still exists in
> the v30 patch. I was not able to come up with an approach to handle it
> in the code, so I have added it to the documentation in the warning
> section. Thoughts?
Seems acceptable to me. pg_createsubscriber will probably always have
some restrictions and unsupported edge cases like that. We can't
support everything, so documenting is ok.
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