| From: | Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> |
|---|---|
| To: | Natarajan R <nataraj3098(at)gmail(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Logical replication support for generic wal record |
| Date: | 2022-08-22 06:45:45 |
| Message-ID: | CALj2ACU40a=-4rUPuamwC+-F_heRLq2pMr+TTddWUn-XJKtmyg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, Aug 22, 2022 at 11:59 AM Natarajan R <nataraj3098(at)gmail(dot)com> wrote:
>
> Hi All,
>
> I am writing a postgres extension which writes only generic wal record, but this wal is not recognized by logical replication decoder. I have a basic understanding of how logical replication(COPY command for initial sync, wal replica for final sync) works, can you please tell us a way to support this?
"Generic" resource manager doesn't have a decoding API, see [1], which
means that the generic WAL records will not get decoded.
Can you be more specific about the use-case? Why use only "Generic"
type WAL records? Why not use "LogicalMessage" type WAL records if you
want your WAL records to be decoded?
[1] https://github.com/postgres/postgres/blob/master/src/include/access/rmgrlist.h#L48
--
Bharath Rupireddy
RDS Open Source Databases: https://aws.amazon.com/rds/postgresql/
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