Horton

Re: [HACKERS] Custom compression methods

Konstantin Knizhnik <k.knizhnik@postgrespro.ru>

View thread View on postgr.es
From: Konstantin Knizhnik <k.knizhnik@postgrespro.ru>
To: Ildus Kurbangaliev <i.kurbangaliev@postgrespro.ru>, Ildar Musin <i.musin@postgrespro.ru>
Cc: Robert Haas <robertmhaas@gmail.com>, Alexander Korotkov <a.korotkov@postgrespro.ru>, Tomas Vondra <tomas.vondra@2ndquadrant.com>, Alvaro Herrera <alvherre@2ndquadrant.com>, Евгений Шишкин <itparanoia@gmail.com>, Andres Freund <andres@anarazel.de>, Oleg Bartunov <obartunov@gmail.com>, Craig Ringer <craig@2ndquadrant.com>, Peter Eisentraut <peter.eisentraut@2ndquadrant.com>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>, Chapman Flack <chap@anastigmatix.net>
Date: 2018-04-20T16:45:06Z
Lists: pgsql-hackers 

On 30.03.2018 19:50, Ildus Kurbangaliev wrote:
> On Mon, 26 Mar 2018 20:38:25 +0300
> Ildus Kurbangaliev <i.kurbangaliev@postgrespro.ru> wrote:
>
>> Attached rebased version of the patch. Fixed conflicts in pg_class.h.
>>
> New rebased version due to conflicts in master. Also fixed few errors
> and removed cmdrop method since it couldnt be tested.
>
  I seems to be useful (and not so difficult) to use custom compression 
methods also for WAL compression: replace direct calls of pglz_compress 
in xloginsert.c

-- 
Konstantin Knizhnik
Postgres Professional: http://www.postgrespro.com
The 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.