Horton

Re: row filtering for logical replication

Peter Smith <smithpb2250@gmail.com>

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From: Peter Smith <smithpb2250@gmail.com>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: "houzj.fnst@fujitsu.com" <houzj.fnst@fujitsu.com>, Ajin Cherian <itsajin@gmail.com>, Euler Taveira <euler@eulerto.com>, Greg Nancarrow <gregn4422@gmail.com>, vignesh C <vignesh21@gmail.com>, "tanghy.fnst@fujitsu.com" <tanghy.fnst@fujitsu.com>, Dilip Kumar <dilipbalaut@gmail.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: 2022-01-06T22:18:14Z
Lists: pgsql-hackers

Commits

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  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 Wed, Jan 5, 2022 at 4:56 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
...

> > > 4.
> > > +#define IDX_PUBACTION_n 3
> > > + ExprState    *exprstate[IDX_PUBACTION_n]; /* ExprState array for row filter.
> > > +    One per publication action. */
> > > ..
> > > ..
> > >
> > > I think we can have this define outside the structure. I don't like
> > > this define name, can we name it NUM_ROWFILTER_TYPES or something like
> > > that?
> > >
> >
> > Partly fixed in v51* [1], I've changed the #define name but I did not
> > move it. The adjacent comment talks about these ExprState caches and
> > explains the reason why the number is 3. So if I move the #define then
> > half that comment would have to move with it. I thought it is better
> > to keep all the related parts grouped together with the one
> > explanatory comment, but if you still want the #define moved please
> > confirm and I can do it in a future version.
> >
>
> Yeah, I would prefer it to be moved. You can move the part of the
> comment suggesting three pubactions can be used for row filtering.
>

Fixed in v59* [1]

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[1] https://www.postgresql.org/message-id/CAHut%2BPsiw9fbOUTpCMWirut1ZD5hbWk8_U9tZya4mG-YK%2Bfq8g%40mail.gmail.com

Kind Regards,
Peter Smith.
Fujitsu Australia