Re: Handle infinite recursion in logical replication setup

vignesh C <vignesh21@gmail.com>

From: vignesh C <vignesh21@gmail.com>
To: Dilip Kumar <dilipbalaut@gmail.com>
Cc: Peter Smith <smithpb2250@gmail.com>, Amit Kapila <amit.kapila16@gmail.com>, Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>, "kuroda.hayato@fujitsu.com" <kuroda.hayato@fujitsu.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2022-06-20T11:57:29Z
Lists: pgsql-hackers
On Mon, Jun 20, 2022 at 3:16 PM vignesh C <vignesh21@gmail.com> wrote:
>
> On Mon, Jun 20, 2022 at 2:37 PM Dilip Kumar <dilipbalaut@gmail.com> wrote:
> >
> > On Thu, Jun 16, 2022 at 3:48 PM vignesh C <vignesh21@gmail.com> wrote:
> > >
> > > On Wed, Jun 15, 2022 at 12:09 PM Peter Smith <smithpb2250@gmail.com> wrote:
> > > >
> >
> > > Thanks for the comments, the attached v21 patch has the changes for the same.
> >
> > I have done some basic review of v21 and I have a few comments,
> >
> > 1.
> > +/*
> > + * The subscription will request the publisher to only send changes that
> > + * originated locally.
> > + */
> > +#define LOGICALREP_ORIGIN_LOCAL "local"
> > +
> > +/*
> > + * The subscription will request the publisher to send any changes regardless
> > + * of their origin
> > + */
> > +#define LOGICALREP_ORIGIN_ANY "any"
> >
> > Are we planning to extend this to more options or are we planning to
> > support the actual origin name here? If not then why isn't it just
> > bool?  I think the comments and the patch commit message should
> > explain the details behind it if it has been already discussed and
> > concluded.
>
> Currently we only support local and any. But this was designed to
> accept string instead of boolean type, so that it can be extended
> later to support filtering of origin names specified by the user in
> the later versions. The same was also discussed in pg unconference as
> mentioned in [1]. I will add it to the commit message and a comment
> for the same in the next version.

Thanks for the comment, the v22 patch attached at [1] has the changes
for the same.
[1] - https://www.postgresql.org/message-id/CALDaNm1h-9UNi_Jo_K%2BPK34tXBmV7fhj5C_nB8YzGA9rmUwHEA%40mail.gmail.com

Regards,
Vignesh



Commits

  1. Improved CREATE SUBSCRIPTION message for clarity

  2. Fix the test case introduced by commit 8756930190.

  3. Raise a warning if there is a possibility of data from multiple origins.

  4. Add wait_for_subscription_sync for TAP tests.

  5. Bump catversion for commit d8cd0c6c95c0120168df93aae095df4e0682a08a.

  6. Allow users to skip logical replication of data having origin.

  7. Improve two comments related to a boolean DefElem's value

  8. doc: Fix man page whitespace issues