Re: Support logical replication of DDLs

Zheng Li <zhengli10@gmail.com>

From: Zheng Li <zhengli10@gmail.com>

To: Dilip Kumar <dilipbalaut@gmail.com>, Ajin Cherian <itsajin@gmail.com>

Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, rajesh singarapu <rajesh.rs0541@gmail.com>

Date: 2022-04-15T02:08:58Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Add a run_as_owner option to subscriptions.
- 482675987bcd 16.0 cited
Refactor pgoutput_change().
- da324d6cd45b 16.0 cited
Print the correct aliases for DML target tables in ruleutils.
- df931e9ab35b 11.20 landed
- c8a5f1685fb7 15.3 landed
- 4efb4f0d4878 13.11 landed
- 3dd287c14fac 12.15 landed
- 393430f57544 16.0 landed
- 14345f3c6a7b 14.8 landed
Fix object identity string for transforms
- 9a312562314a 16.0 landed
Add grantable MAINTAIN privilege and pg_maintain role.
- 60684dd834a2 16.0 cited
Get rid of recursion-marker values in enum AlterTableType
- 840ff5f451cd 16.0 cited
Release cache tuple when no longer needed
- ed0fbc8e5ac9 15.0 cited
Empty search_path in logical replication apply worker and walsender.
- 11da97024abb 14.0 cited
Refactor format_type APIs to be more modular
- a26116c6cbf4 11.0 cited
Use wrappers of PG_DETOAST_DATUM_PACKED() more.
- 3a0d473192b2 10.0 cited

Attachments

v4-0007-Enable-logging-and-replication-of-DDLs-in-function.patch (application/octet-stream) patch v4-0007

> > But then this could be true for DML as well right?  Like after
> > replicating the function to the subscriber if we are sending the DML
> > done by function then what's the problem in DDL.  I mean if there is
> > no design issue in implementing this then I don't think there is much
> > point in blocking the same or even providing configuration for this.
>
> Agreed. I'll unblock DDLs in functions/procedures and test it out. I
> find out some DDLs in functions are replicated multiple times on the
> subscriber while they should only be replicated once. Still trying to
> figure out why.

Here is the patch unblocking DDLs in function and procedures. Also
fixed a bug where DDL with sub-command may get logged twice.
github commit of the same patch:
https://github.com/zli236/postgres/commit/d0fe6065ee3cb6051e5b026f17b82f5220903e6f

Regards,
Zheng