Re: Added schema level support for publication.

vignesh C <vignesh21@gmail.com>

From: vignesh C <vignesh21@gmail.com>
To: Rahila Syed <rahilasyed90@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2021-01-22T04:31:35Z
Lists: pgsql-hackers
Thanks Rahila for your comments. Please find my thoughts below:

On Wed, Jan 20, 2021 at 6:27 PM Rahila Syed <rahilasyed90@gmail.com> wrote:
>
> Hi Vignesh,
>
>>
>> I have handled the above scenario(drop schema should automatically
>> remove the schema entry from publication schema relation) & addition
>> of tests in the new v2 patch attached.
>> Thoughts?
>
>
> Please see some initial comments:
>
> 1. I think there should be more tests to show that the schema data is actually replicated
> to the subscriber.  Currently, I am not seeing the data being replicated when I use FOR SCHEMA.
>
I will fix this issue and include more tests in my next version of the patch.

> 2. How does replication behave when a table is added or removed from a subscribed schema
> using ALTER TABLE SET SCHEMA?
>
I would like to keep the behavior similar to the table behavior. I
will post more details for this along with my next version of the
patch.

> 3. Can we have a default schema like a public or current schema that gets replicated in case the user didn't
> specify one, this can be handy to replicate current schema tables.
>
It looks like a good use case, I will check on the feasibility of this
and try to implement this.

> 4. +   The fourth, fifth and sixth variants change which schemas are part of the
> +   publication.  The <literal>SET TABLE</literal> clause will replace the list
> +   of schemas in the publication with the specified one.  The <literal>ADD
>
> There is a typo above s/SET TABLE/SET SCHEMA
I will fix this in the next version of the patch.

Regards,
Vignesh
EnterpriseDB: http://www.enterprisedb.com



Commits

  1. Include schema/table publications even with exclude options in dump.

  2. Rename some enums to use TABLE instead of REL.

  3. Add tap tests for the schema publications.

  4. Allow publishing the tables of schema.

  5. In pg_dump, use simplehash.h to look up dumpable objects by OID.