Horton

Re: Skipping logical replication transactions on subscriber side

Masahiko Sawada <sawada.mshk@gmail.com>

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From: Masahiko Sawada <sawada.mshk@gmail.com>
To: Noah Misch <noah@leadboat.com>
Cc: Amit Kapila <amit.kapila16@gmail.com>, Euler Taveira <euler@eulerto.com>, "osumi.takamichi@fujitsu.com" <osumi.takamichi@fujitsu.com>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>, "David G. Johnston" <david.g.johnston@gmail.com>, "tanghy.fnst@fujitsu.com" <tanghy.fnst@fujitsu.com>, vignesh C <vignesh21@gmail.com>, Greg Nancarrow <gregn4422@gmail.com>, "houzj.fnst@fujitsu.com" <houzj.fnst@fujitsu.com>, Alexey Lesovsky <lesovsky@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2022-04-06T03:54:42Z
Lists: pgsql-hackers

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On Wed, Apr 6, 2022 at 12:21 PM Noah Misch <noah@leadboat.com> wrote:
>
> On Tue, Apr 05, 2022 at 04:41:28PM +0900, Masahiko Sawada wrote:
> > On Tue, Apr 5, 2022 at 4:08 PM Noah Misch <noah@leadboat.com> wrote:
> > > On Tue, Apr 05, 2022 at 03:05:10PM +0900, Masahiko Sawada wrote:
> > > > I've attached an updated patch. The patch includes a regression test
> > > > to detect the new violation as we discussed. I've confirmed that
> > > > Cirrus CI tests pass. Please confirm on AIX and review the patch.
> > >
> > > When the context of a "git grep skiplsn" match involves several struct fields
> > > in struct order, please change to the new order.  In other words, do for all
> > > "git grep skiplsn" matches what the v2 patch does in GetSubscription().  The
> > > v2 patch does not do this for catalogs.sgml, but it ought to.  I didn't check
> > > all the other "git grep" matches; please do so.
> >
> > Oops, I missed many places. I checked all "git grep" matches and fixed them.
>
> > --- a/src/backend/catalog/system_views.sql
> > +++ b/src/backend/catalog/system_views.sql
> > @@ -1285,8 +1285,8 @@ REVOKE ALL ON pg_replication_origin_status FROM public;
> >
> >  -- All columns of pg_subscription except subconninfo are publicly readable.
> >  REVOKE ALL ON pg_subscription FROM public;
> > -GRANT SELECT (oid, subdbid, subname, subowner, subenabled, subbinary,
> > -              substream, subtwophasestate, subdisableonerr, subskiplsn, subslotname,
> > +GRANT SELECT (oid, subdbid, subname, subskiplsn, subowner, subenabled,
> > +              subbinary, substream, subtwophasestate, subdisableonerr, subslotname,
> >                subsynccommit, subpublications)
>
> subskiplsn comes before subname.

Right. I've attached an updated patch.

Regards,

-- 
Masahiko Sawada
EDB:  https://www.enterprisedb.com/

Commits

  1. Test ALIGNOF_DOUBLE==4 compatibility under ALIGNOF_DOUBLE==8.

  2. Reorder subskiplsn in pg_subscription to avoid alignment issues.

  3. Add ALTER SUBSCRIPTION ... SKIP.

  4. Optionally disable subscriptions on error.

  5. Update docs of logical replication for commit 8d74fc96db.

  6. Respect permissions within logical replication.

  7. Fix regression test failure caused by commit 8d74fc96db.

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

  9. Add logical change details to logical replication worker errcontext.

  10. Rename LOGICAL_REP_MSG_STREAM_END to LOGICAL_REP_MSG_STREAM_STOP.

  11. Fix typo in protocol.sgml.

  12. Remove unused argument in apply_handle_commit_internal().

  13. Fix replication of in-progress transactions in tablesync worker.

  14. Reorder pg_sequence columns to avoid alignment issue