Re: pg_createsubscriber: drop pre-existing subscriptions from the converted node

Amit Kapila <amit.kapila16@gmail.com>

From: Amit Kapila <amit.kapila16@gmail.com>
To: Shlok Kyal <shlok.kyal.oss@gmail.com>
Cc: "Hayato Kuroda (Fujitsu)" <kuroda.hayato@fujitsu.com>, vignesh C <vignesh21@gmail.com>, "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>, Euler Taveira <euler@eulerto.com>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Date: 2024-07-02T10:03:45Z
Lists: pgsql-hackers
On Tue, Jul 2, 2024 at 9:57 AM Shlok Kyal <shlok.kyal.oss@gmail.com> wrote:
>
> On Mon, 1 Jul 2024 at 11:44, Hayato Kuroda (Fujitsu)
> <kuroda.hayato@fujitsu.com> wrote:
> >
> > Dear Amit,
> >
> > Thanks for giving comments! PSA new version.
> >
> > > Thanks, this is a better approach. I have changed a few comments and
> > > made some other cosmetic changes. See attached.
> >
> > I checked your attached and LGTM. Based on that, I added some changes
> > like below:
> >
> > - Made dbname be escaped while listing up pre-existing subscriptions
> >  Previous version could not pass tests by recent commits.
> > - Skipped dropping subscriptions in dry_run mode
> >   I found the issue while poring the test to 040_pg_createsubscriber.pl.
> > - Added info-level output to follow other drop_XXX functions
> >
> > > BTW, why have you created a separate test file for this test? I think
> > > we should add a new test to one of the existing tests in
> > > 040_pg_createsubscriber.
> >
> > I was separated a test file for just confirmation purpose, I've planned to merge.
> > New patch set did that.
> >
> > > You can create a dummy subscription on node_p
> > > and do a test similar to what we are doing in "# Create failover slot
> > > to test its removal".
> >
> > Your approach looks better than mine. I followed the approach.
>
> Hi Kuroda-san,
>
> I tested the patches on linux and windows and I confirm that it
> successfully fixes the issue [1].
>

Thanks for the verification. I have pushed the patch.

-- 
With Regards,
Amit Kapila.



Commits

  1. Drop pre-existing subscriptions from the converted subscriber.

  2. Remove unused structure member in pg_createsubscriber.c.