Horton

Re: [HACKERS] Custom compression methods

Ildus Kurbangaliev <i.kurbangaliev@postgrespro.ru>

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From: Ildus Kurbangaliev <i.kurbangaliev@postgrespro.ru>
To: pgsql-hackers@postgresql.org
Date: 2017-11-14T13:23:56Z
Lists: pgsql-hackers

Attachments

On Thu, 2 Nov 2017 15:28:36 +0300
Ildus Kurbangaliev <i.kurbangaliev@postgrespro.ru> wrote:

> On Tue, 12 Sep 2017 17:55:05 +0300
> Ildus Kurbangaliev <i.kurbangaliev@postgrespro.ru> wrote:
> 
> > 
> > Attached rebased version of the patch. Added support of pg_dump, the
> > code was simplified, and a separate cache for compression options
> > was added.
> >   
> 
> Attached version 3 of the patch. Rebased to the current master,
> removed ALTER TYPE .. SET COMPRESSED syntax, fixed bug in compression
> options cache.
> 

Attached version 4 of the patch. Fixed pg_upgrade and few other bugs.

-- 
---
Ildus Kurbangaliev
Postgres Professional: http://www.postgrespro.com
Russian Postgres Company

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.