Re: Optimize partial TOAST decompression

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
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 15:34:35
Message-ID: 2093.1569944075@sss.pgh.pa.us
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Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> writes:
> On Tue, Oct 01, 2019 at 10:10:37AM -0400, Tom Lane wrote:
>> 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.

FWIW, prairiedog got past that test, so whatever it is seems specific
to big-endian 64-bit. Odd.

regards, tom lane

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