Horton

Re: Skipping logical replication transactions on subscriber side

Amit Kapila <amit.kapila16@gmail.com>

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From: Amit Kapila <amit.kapila16@gmail.com>
To: Masahiko Sawada <sawada.mshk@gmail.com>
Cc: "houzj.fnst@fujitsu.com" <houzj.fnst@fujitsu.com>, vignesh C <vignesh21@gmail.com>, Greg Nancarrow <gregn4422@gmail.com>, "tanghy.fnst@fujitsu.com" <tanghy.fnst@fujitsu.com>, "osumi.takamichi@fujitsu.com" <osumi.takamichi@fujitsu.com>, Alexey Lesovsky <lesovsky@gmail.com>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2021-11-27T10:56:40Z
Lists: pgsql-hackers

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On Fri, Nov 26, 2021 at 6:00 AM Masahiko Sawada <sawada.mshk@gmail.com> wrote:
>
> Indeed. Attached an updated patch. Thanks!
>

I have made a number of changes in the attached patch which includes
(a) the patch was trying to register multiple array entries for the
same subscription which doesn't seem to be required, see changes in
pgstat_vacuum_stat, (b) multiple changes in the test like reduced the
wal_retrieve_retry_interval to 2s which has reduced the test time to
half, remove the check related to resetting of stats as there is no
guarantee that the message will be received by the collector and we
were not sending it again, changed the test case file name to
026_stats as we can add more subscription-related stats in this test
file itself (c) added/edited multiple comments, (d) updated
PGSTAT_FILE_FORMAT_ID.

Do let me know what you think of the attached?

-- 
With Regards,
Amit Kapila.

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