From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
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To: | shveta malik <shveta(dot)malik(at)gmail(dot)com> |
Cc: | pgsql-docs(at)lists(dot)postgresql(dot)org, "Zhijie Hou (Fujitsu)" <houzj(dot)fnst(at)fujitsu(dot)com> |
Subject: | Re: Correction in doc of failover ready steps |
Date: | 2024-07-22 11:12:55 |
Message-ID: | CAA4eK1+voWz3b1zL=RP4AcsDuLfRv7N=Rom2od5uD-geKEQDGA@mail.gmail.com |
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Lists: | pgsql-docs |
On Mon, Jul 22, 2024 at 10:59 AM shveta malik <shveta(dot)malik(at)gmail(dot)com> wrote:
>
> On Mon, Jul 22, 2024 at 10:46 AM shveta malik <shveta(dot)malik(at)gmail(dot)com> wrote:
> >
> > Hi,
> >
> > We have a query in failover-ready doc referring to
> > pg_subscription_rel. Unlike pg_subscription, pg_subscription_rel gives
> > results only when connected to the database having the
> > subscription(s). If we run the concerned query on any other database,
> > it will give incomplete results i.e. it will give info on main slots
> > leaving table sync slots (if any).
> > Thus the failover-ready steps which queries pg_subscription_rel need
> > to mention that the concerned query needs to be run on the database(s)
> > that includes the failover enabled subscription(s). Corrected the doc
> > for the same.
>
> On rethinking, since pg_subscription query needs to be run only once
> on *any* database to get combined results of all main slots while
> pg_subscription_rel query needs to be run on each database having
> concerned subscription (and table), does it makes sense to separate
> the 2 queries instead of having UNION ? Thoughts?
>
I think so. Let's see if Hou-San or anyone else has better ideas to
fetch this information.
--
With Regards,
Amit Kapila.
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