Re: Skipping logical replication transactions on subscriber side

From: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
To: "houzj(dot)fnst(at)fujitsu(dot)com" <houzj(dot)fnst(at)fujitsu(dot)com>
Cc: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Greg Nancarrow <gregn4422(at)gmail(dot)com>, "tanghy(dot)fnst(at)fujitsu(dot)com" <tanghy(dot)fnst(at)fujitsu(dot)com>, "osumi(dot)takamichi(at)fujitsu(dot)com" <osumi(dot)takamichi(at)fujitsu(dot)com>, Alexey Lesovsky <lesovsky(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, vignesh C <vignesh21(at)gmail(dot)com>
Subject: Re: Skipping logical replication transactions on subscriber side
Date: 2021-11-17 04:58:46
Message-ID: CAA4eK1K8Pe4s1E=RuEABEBWErpRxbeAw5M0CfE1Ux=yucYORfg@mail.gmail.com
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On Wed, Nov 17, 2021 at 9:13 AM houzj(dot)fnst(at)fujitsu(dot)com
<houzj(dot)fnst(at)fujitsu(dot)com> wrote:
>
> On Tues, Nov 16, 2021 2:31 PM Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
>
> 2)
> + <row>
> + <entry role="catalog_table_entry"><para role="column_definition">
> + <structfield>subrelid</structfield> <type>oid</type>
> + </para>
> + <para>
> + OID of the relation that the worker is synchronizing; null for the
> + main apply worker
> + </para></entry>
> + </row>
>
> Is the 'subrelid' only used for distinguishing the worker type ?
>

I think it will additionally tell which table sync worker as well.

> If so, would it
> be clear to have a string value here. I recalled the previous version patch has
> failure_source column but was removed. Maybe I missed something.
>

I also don't remember the reason for this but like to know.

I am also reviewing the latest version of the patch and will share
comments/questions sometime today.

--
With Regards,
Amit Kapila.

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