| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
| Cc: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Greg Nancarrow <gregn4422(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, Euler Taveira <euler(at)eulerto(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, Rahila Syed <rahilasyed90(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Önder Kalacı <onderkalaci(at)gmail(dot)com>, japin <japinli(at)hotmail(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, David Steele <david(at)pgmasters(dot)net>, Craig Ringer <craig(at)2ndquadrant(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Amit Langote <amitlangote09(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: row filtering for logical replication |
| Date: | 2021-07-20 04:24:58 |
| Message-ID: | CAA4eK1KGK9WxtRZ19pOivh9V-6ncxNCzDhkLeL7C-5+WgsaDsg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, Jul 19, 2021 at 4:31 PM Dilip Kumar <dilipbalaut(at)gmail(dot)com> wrote:
>
> On Mon, Jul 19, 2021 at 3:12 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>
> > > Maybe a second option is to have replication change any UPDATE into
> > > either an INSERT or a DELETE, if the old or the new row do not pass the
> > > filter, respectively. That way, the databases would remain consistent.
>
> Yeah, I think this is the best way to keep the data consistent.
>
Today, while studying the behavior of this particular operation in
other databases, I found that IBM's InfoSphere Data Replication does
exactly this. See [1]. I think there is a merit if want to follow this
idea.
[1] - https://www.ibm.com/docs/en/idr/11.4.0?topic=rows-search-conditions
--
With Regards,
Amit Kapila.
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