Horton

Re: row filtering for logical replication

Peter Smith <smithpb2250@gmail.com>

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From: Peter Smith <smithpb2250@gmail.com>
To: vignesh C <vignesh21@gmail.com>
Cc: "houzj.fnst@fujitsu.com" <houzj.fnst@fujitsu.com>, Amit Kapila <amit.kapila16@gmail.com>, Greg Nancarrow <gregn4422@gmail.com>, "tanghy.fnst@fujitsu.com" <tanghy.fnst@fujitsu.com>, Ajin Cherian <itsajin@gmail.com>, Dilip Kumar <dilipbalaut@gmail.com>, Euler Taveira <euler@eulerto.com>, Rahila Syed <rahilasyed90@gmail.com>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>, Önder Kalacı <onderkalaci@gmail.com>, japin <japinli@hotmail.com>, Michael Paquier <michael@paquier.xyz>, David Steele <david@pgmasters.net>, Craig Ringer <craig@2ndquadrant.com>, Amit Langote <amitlangote09@gmail.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2021-12-20T04:53:00Z
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 →

  1. Release cache tuple when no longer needed

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

  3. Fix one of the tests introduced in commit 52e4f0cd47.

  4. Allow specifying row filters for logical replication of tables.

  5. Move scanint8() to numutils.c

  6. Replace Test::More plans with done_testing

  7. Reduce relcache access in WAL sender streaming logical changes

  8. Small cleanups related to PUBLICATION framework code

  9. Add a view to show the stats of subscription workers.

  10. Allow publishing the tables of schema.

  11. Doc: improve documentation of CREATE/ALTER SUBSCRIPTION.

  12. Add PublicationTable and PublicationRelInfo structs

  13. Remove unused argument "txn" in maybe_send_schema().

  14. Add prepare API support for streaming transactions in logical replication.

  15. Unify PostgresNode's new() and get_new_node() methods

  16. Use l*_node() family of functions where appropriate

  17. Add support for prepared transactions to built-in logical replication.

  18. Restore the portal-level snapshot after procedure COMMIT/ROLLBACK.

  19. Rename a parse node to be more general

  20. Remove unused column atttypmod from initial tablesync query

  21. SEARCH and CYCLE clauses

On Thu, Dec 2, 2021 at 7:40 PM vignesh C <vignesh21@gmail.com> wrote:
>
...

> Thanks for the updated patch, few comments:
> 1) Both testpub5a and testpub5c publication are same, one of them can be removed
> +SET client_min_messages = 'ERROR';
> +CREATE PUBLICATION testpub5a FOR TABLE testpub_rf_tbl1 WHERE (a > 1)
> WITH (publish="insert");
> +CREATE PUBLICATION testpub5b FOR TABLE testpub_rf_tbl1;
> +CREATE PUBLICATION testpub5c FOR TABLE testpub_rf_tbl1 WHERE (a > 3)
> WITH (publish="insert");
> +RESET client_min_messages;
> +\d+ testpub_rf_tbl1
> +DROP PUBLICATION testpub5a, testpub5b, testpub5c;
>
> testpub5b will be covered in the earlier existing case above:
> ALTER PUBLICATION testpib_ins_trunct ADD TABLE pub_test.testpub_nopk,
> testpub_tbl1;
>
> \d+ pub_test.testpub_nopk
> \d+ testpub_tbl1
>
> I felt test related to testpub5b is also not required

Skipped. Strictly speaking you may be correct to say this code path is
already tested elsewhere. But this test case was meant for \d+ so I
wanted it to be "self-contained" and easy to observe it displaying
both with and without a filters both at the same time.

> 3) testpub7 can be renamed to testpub6 to maintain the continuity
> since the previous testpub6 did not succeed:
> +CREATE OPERATOR =#> (PROCEDURE = testpub_rf_func, LEFTARG = integer,
> RIGHTARG = integer);
> +CREATE PUBLICATION testpub6 FOR TABLE testpub_rf_tbl3 WHERE (e =#> 27);
> +-- fail - WHERE not allowed in DROP
> +ALTER PUBLICATION testpub5 DROP TABLE testpub_rf_tbl3 WHERE (e < 27);
> +-- fail - cannot ALTER SET table which is a member of a pre-existing schema
> +SET client_min_messages = 'ERROR';
> +CREATE PUBLICATION testpub7 FOR ALL TABLES IN SCHEMA testpub_rf_myschema1;
> +ALTER PUBLICATION testpub7 SET ALL TABLES IN SCHEMA
> testpub_rf_myschema1, TABLE testpub_rf_myschema1.testpub_rf_tb16;
> +RESET client_min_messages;
>

Fixed in v48 [1]

> 4) Did this test intend to include where clause in testpub_rf_tb16, if
> so it can be added:
> +-- fail - cannot ALTER SET table which is a member of a pre-existing schema
> +SET client_min_messages = 'ERROR';
> +CREATE PUBLICATION testpub7 FOR ALL TABLES IN SCHEMA testpub_rf_myschema1;
> +ALTER PUBLICATION testpub7 SET ALL TABLES IN SCHEMA
> testpub_rf_myschema1, TABLE testpub_rf_myschema1.testpub_rf_tb16;
> +RESET client_min_messages;
>

Fixed in v48 [1]

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[1] https://www.postgresql.org/message-id/CAHut%2BPuHz1oFM7oaiHeqxMQqd0L70bV_hT7u_mDf3b8As5kwig%40mail.gmail.com

Kind Regards,
Peter Smith.
Fujitsu Australia