| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | John R Pierce <pierce(at)hogranch(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Improve compression speeds in pg_lzcompress.c |
| Date: | 2013-01-07 10:39:22 |
| Message-ID: | 20130107103922.GB5301@awork2.anarazel.de |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2013-01-07 02:21:26 -0800, John R Pierce wrote:
> On 1/7/2013 2:05 AM, Andres Freund wrote:
> >I think there should be enough bits available in the toast pointer to
> >indicate the type of compression. I seem to remember somebody even
> >posting a patch to that effect?
> >I agree that it's probably too late in the 9.3 cycle to start with this.
>
> so an upgraded database would have old toasted values in the old compression
> format, and new toasted values in the new format in an existing table?
> that's kind of ugly.
Well, ISTM thats just life. What you prefer? Converting all toast values
during pg_upgrade kinda goes against the aim of quick upgrades.
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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