RE: Handle infinite recursion in logical replication setup

From: "shiy(dot)fnst(at)fujitsu(dot)com" <shiy(dot)fnst(at)fujitsu(dot)com>
To: vignesh C <vignesh21(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>
Cc: Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, "kuroda(dot)hayato(at)fujitsu(dot)com" <kuroda(dot)hayato(at)fujitsu(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: RE: Handle infinite recursion in logical replication setup
Date: 2022-05-18 08:10:42
Message-ID: TYAPR01MB63158F3BDA76DBFAE53F59EAFDD19@TYAPR01MB6315.jpnprd01.prod.outlook.com
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On Wed, May 4, 2022 2:47 PM vignesh C <vignesh21(at)gmail(dot)com> wrote:
>
> Thanks for the comments, the attached v13 patch has the changes for the same.
>

Thanks for your patch. Here are some comments on v13-0001 patch.

1)
@@ -152,6 +152,18 @@ CREATE SUBSCRIPTION <replaceable class="parameter">subscription_name</replaceabl
</listitem>
</varlistentry>

+ <varlistentry>
+ <term><literal>local_only</literal> (<type>boolean</type>)</term>
+ <listitem>
+ <para>
+ Specifies whether the subscription will request the publisher to send
+ locally originated changes at the publisher node, or send any
+ publisher node changes regardless of their origin. The default is
+ <literal>false</literal>.
+ </para>
+ </listitem>
+ </varlistentry>
+
<varlistentry>
<term><literal>slot_name</literal> (<type>string</type>)</term>
<listitem>

I think this change should be put after "The following parameters control the
subscription's replication behavior after it has been created", thoughts?

2)
A new column "sublocalonly" is added to pg_subscription, so maybe we need add it
to pg_subscription document, too. (in doc/src/sgml/catalogs.sgml)

3)
/*
* Currently we always forward.
*/
static bool
pgoutput_origin_filter(LogicalDecodingContext *ctx,
RepOriginId origin_id)

Should we modify the comment of pgoutput_origin_filter()? It doesn't match the
code.

Regards,
Shi yu

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