Horton
Menu

RE: Adding REPACK [concurrently]

Zhijie Hou (Fujitsu) <houzj.fnst@fujitsu.com>

View thread
From: "Zhijie Hou (Fujitsu)" <houzj.fnst@fujitsu.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Antonin Houska <ah@cybertec.at>, Amit Kapila <amit.kapila16@gmail.com>, "Hayato Kuroda (Fujitsu)" <kuroda.hayato@fujitsu.com>, Srinath Reddy Sadipiralla <srinath2133@gmail.com>, Mihail Nikalayeu <mihailnikalayeu@gmail.com>, Matthias van de Meent <boekewurm+postgres@gmail.com>, Pg Hackers <pgsql-hackers@lists.postgresql.org>, Robert Treat <rob@xzilla.net>
Date: 2026-06-01T02:25:59Z
Lists: pgsql-hackers

Attachments

On Saturday, May 30, 2026 6:25 AM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> 
> On 2026-May-27, Zhijie Hou (Fujitsu) wrote:
> 
> > I tried a bit, and the test complexity and speed (< 1s) appear to be
> > within acceptable limits. I'm attaching 0002 as a reference test.
> >
> > 0001 remains unchanged.
> 
> Pushed 0001, in two parts.  I rewrote the comment in
> decode_concurrent_changes() though, hope it ended up okay.

Thank you for pushing the patches ! The comments look good to me.

In the original 0002 test patch, I realized that I missed to drop existing slots
from previous tests (I did locally but missed to merge into the patch), which
also prevented WAL removal, sorry for that. Attached is the fixed test patch.

Best Regards,
Hou zj

Commits

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

  1. Allow old WAL recycling during REPACK CONCURRENTLY

  2. Advance restart_lsn more eagerly in LogicalConfirmReceivedLocation

  3. Remove unnecessary signal handler change

  4. Improve REPACK (CONCURRENTLY) error messages some more

  5. Revert "Allow logical replication snapshots to be database-specific"

  6. Move REPACK (CONCURRENTLY) test out of stock regression tests

  7. REPACK: do not require REPLICATION or LOGIN

  8. Add missing initialization

  9. Simplify declaration of memcpy target

  10. Reserve replication slots specifically for REPACK

  11. doc: Add an example of REPACK (CONCURRENTLY)

  12. Allow logical replication snapshots to be database-specific

  13. Avoid different-size pointer-to-integer cast

  14. Fix valgrind failure

  15. Add CONCURRENTLY option to REPACK

  16. Rename cluster.c to repack.c (and corresponding .h)

  17. Allow index_create to suppress index_build progress reporting

  18. Make index_concurrently_create_copy more general

  19. Document the 'command' column of pg_stat_progress_repack

  20. Introduce the REPACK command

  21. Toggle logical decoding dynamically based on logical slot presence.

  22. Split vacuumdb to create vacuuming.c/h

  23. Remove ReorderBufferTupleBuf structure.

  24. Revert changes to CONCURRENTLY that "sped up" Xmin advance

  25. VACUUM: ignore indexing operations with CONCURRENTLY