On Mon, Aug 22, 2022 at 11:59 AM Natarajan R <nataraj3098@gmail.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?
I am writing an extension which implements postgres table access method interface[1] with master-slave architecture, with the help of doc[1] i decided to go with generic_wal to achieve crash_safety and also for streaming replication. It seems like generic_wal couldn't help with logical replication.. But, I don't have knowledge on "LogicalMessage" Resource Manager, need to explore about it.
