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Re: Column Filtering in Logical Replication

Tomas Vondra <tomas.vondra@enterprisedb.com>

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From: Tomas Vondra <tomas.vondra@enterprisedb.com>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: "houzj.fnst@fujitsu.com" <houzj.fnst@fujitsu.com>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>, Alvaro Herrera <alvherre@alvh.no-ip.org>, Justin Pryzby <pryzby@telsasoft.com>, Rahila Syed <rahilasyed90@gmail.com>, Peter Smith <smithpb2250@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>, "shiy.fnst@fujitsu.com" <shiy.fnst@fujitsu.com>
Date: 2022-03-14T13:32:53Z
Lists: pgsql-hackers 

On 3/14/22 13:47, Amit Kapila wrote:
> On Mon, Mar 14, 2022 at 5:42 PM Tomas Vondra
> <tomas.vondra@enterprisedb.com> wrote:
>>
>> On 3/14/22 12:12, houzj.fnst@fujitsu.com wrote:
>>> On Monday, March 14, 2022 5:08 AM Tomas Vondra <tomas.vondra@enterprisedb.com> wrote:
>>
>> Anyway, the fix does not address tablesync, as explained in [1]. I'm not
>> sure what to do about it - in principle, we could calculate which
>> relations to sync, and then eliminate "duplicates" (i.e. relations where
>> we are going to sync an ancestor).
>>
> 
> As mentioned in my previous email [1], this appears to be a base code
> issue (even without row filter or column filter work), so it seems
> better to deal with it separately. It has been reported separately as
> well [2] where we found some similar issues.
> 

Right. I don't want to be waiting for that fix either, that'd block this
patch unnecessarily. If there are no other comments, I'll go ahead,
polish the existing patches a bit more and get them committed. We can
worry about this pre-existing issue later.


regards

-- 
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

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

  1. Doc: Explain about Column List feature.

  2. Doc: fix column list vs. replica identity rules.

  3. Prohibit combining publications with different column lists.

  4. Fix the check to limit sync workers.

  5. Wait for subscription to sync in t/031_column_list.sql

  6. Move prattrs to the pg_publication_rel section in docs

  7. Allow specifying column lists for logical replication

  8. Fix row filters with multiple publications

  9. Fix publish_as_relid with multiple publications

  10. Add some additional tests for row filters in logical replication.

  11. Add index on pg_publication_rel.prpubid

  12. Avoid using DefElemAction in AlterPublicationStmt

  13. Small cleanups related to PUBLICATION framework code

  14. Add PublicationTable and PublicationRelInfo structs

  15. Fix various concurrency issues in logical replication worker launching