On Fri, Aug 02, 2019 at 11:20:03AM -0700, Andres Freund wrote:
Hi,
On 2019-08-02 19:52:39 +0200, Tomas Vondra wrote:
Hmmm, I don't remember the details of those patches so I didn't realize
it allows incremental recompression. If that's possible, that would mean
existing systems can start using it. Which is good.
That depends on what do you mean by "incremental"? A single toasted
datum can only have one compression type, because we only update them
all in one anyway. But different datums can be compressed differently.
I meant different toast values using different compression algorithm,
sorry for the confusion.
Another question is whether we'd actually want to include the code in
core directly, or use system libraries (and if some packagers might
decide to disable that, for whatever reason).
I'd personally say we should have an included version, and a
--with-system-... flag that uses the system one.
OK. I'd say to require a system library, but that's a minor detail.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
