| From: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Binguo Bao <djydewang(at)gmail(dot)com>, Paul Ramsey <pramsey(at)cleverelephant(dot)ca>, Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Optimize partial TOAST decompression |
| Date: | 2019-10-01 14:57:58 |
| Message-ID: | 20191001145758.rofbwvguwxwpdxyb@development |
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| Thread: | |
| Lists: | pgsql-hackers |
On Tue, Oct 01, 2019 at 10:10:37AM -0400, Tom Lane wrote:
>Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> writes:
>> Hmmm, this seems to trigger a failure on thorntail, which is a sparc64
>> machine (and it seems to pass on all x86 machines, so far).
>
>gharial's not happy either, and I bet if you wait a bit longer you'll
>see the same on other big-endian machines.
>
>> I wonder if that's wrong, somehow ... Maybe it should use VARSIZE_ANY,
>> but then how would it work on any platform and only fail on sparc64?
>
>Maybe it accidentally seems to work on little-endian, thanks to the
>different definitions of varlena headers?
>
Maybe. Let's see if just using VARSIZE_ANY does the trick. If not, I'll
investigate further.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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