Horton

Re: [HACKERS] Custom compression methods

Dmitry Dolgov <9erthalion6@gmail.com>

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From: Dmitry Dolgov <9erthalion6@gmail.com>
To: i.kurbangaliev@postgrespro.ru, Alexander Korotkov <a.korotkov@postgrespro.ru>
Cc: PostgreSQL Developers <pgsql-hackers@lists.postgresql.org>
Date: 2018-11-30T14:08:39Z
Lists: pgsql-hackers 
> On Thu, Sep 6, 2018 at 5:27 PM Ildus Kurbangaliev <i.kurbangaliev@postgrespro.ru> wrote:
>
> Hi, attached latest set of patches. Rebased and fixed pg_upgrade errors
> related with zlib support.

Thank you for working on this patch, I believe the ideas mentioned in this
thread are quite important for Postgres improvement. Unfortunately, patch has
some conflicts now, could you post a rebased version one more time?

> On Mon, 23 Jul 2018 16:16:19 +0300
> Alexander Korotkov <a.korotkov@postgrespro.ru> wrote:
>
> > I'm going to review this patch.  Could you please rebase it?  It
> > doesn't apply for me due to changes made in src/bin/psql/describe.c.

Is there any review underway, could you share the results?

Commits

  1. docs: Update TOAST storage docs for configurable compression.

  2. Further tweaking of pg_dump's handling of default_toast_compression.

  3. Fix interaction of TOAST compression with expression indexes.

  4. Tidy up more loose ends related to configurable TOAST compression.

  5. Short-circuit slice requests that are for more than the object's size.

  6. Mostly-cosmetic adjustments of TOAST-related macros.

  7. Remove useless configure probe for <lz4/lz4.h>.

  8. Error on invalid TOAST compression in CREATE or ALTER TABLE.

  9. docs: Fix omissions related to configurable TOAST compression.

  10. More code cleanup for configurable TOAST compression.

  11. Bring configure support for LZ4 up to snuff.

  12. Make compression.sql regression test independent of default.

  13. Use valid compression method in brin_form_tuple

  14. Fix up pg_dump's handling of per-attribute compression options.

  15. Allow configurable LZ4 TOAST compression.

  16. Fix inconsistencies in the code

  17. Mostly-cosmetic improvements in memory chunk header alignment coding.

  18. Allow numeric to use a more compact, 2-byte header in many cases.