| From: | Peter Eisentraut <peter(at)eisentraut(dot)org> |
|---|---|
| To: | vignesh C <vignesh21(at)gmail(dot)com> |
| Cc: | Euler Taveira <euler(at)eulerto(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Shlok Kyal <shlok(dot)kyal(dot)oss(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> |
| Subject: | Re: speed up a logical replica setup |
| Date: | 2024-03-19 16:19:00 |
| Message-ID: | e866a9dd-a783-4100-a152-dc3992474fb6@eisentraut.org |
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| Lists: | pgsql-hackers |
On 19.03.24 16:24, vignesh C wrote:
> The problem with this failure is that standby has been promoted
> already and we will have to re-create the physica replica again.
>
> If you are not planning to have the checks for name length, this could
> alternatively be fixed by including database id also while querying
> pg_subscription like below in set_replication_progress function:
> appendPQExpBuffer(str,
> "SELECT oid FROM pg_catalog.pg_subscription \n"
> "WHERE subname = '%s' AND subdbid = (SELECT oid FROM
> pg_catalog.pg_database WHERE datname = '%s')",
> dbinfo->subname,
> dbinfo->dbname);
Yes, this is more correct anyway, because subscription names are
per-database, not global. So you should be able to make
pg_createsubscriber use the same subscription name for each database.
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