Re: [Proposal] Global temporary tables

From: Andres Freund <andres(at)anarazel(dot)de>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Greg Stark <stark(at)mit(dot)edu>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, wenjing(at)gmail(dot)com, Andrew Bille <andrewbille(at)gmail(dot)com>, Tony Zhu <Tony(dot)zhu(at)ww-it(dot)cn>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: [Proposal] Global temporary tables
Date: 2022-03-03 21:20:59
Message-ID: 20220303212059.fpmgkv4vf2ai4jda@alap3.anarazel.de
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Hi,

On 2022-03-03 16:07:37 -0500, Robert Haas wrote:
> On Thu, Mar 3, 2022 at 3:29 PM Greg Stark <stark(at)mit(dot)edu> wrote:
> > I'm still hopeful we get to advance this early in 16 because I think
> > everyone agrees the feature would be great.
>
> I'm not saying this patch can't make progress, but I think the chances
> of this being ready to commit any time in the v16 release cycle, let
> alone at the beginning, are low. This patch set has been around since
> 2019, and here Andres and I are saying it's not even really reviewable
> in the shape that it's in. I have done some review of it previously,
> BTW, but eventually I gave up because it just didn't seem like we were
> making any progress. And then a long time after that people were still
> finding many server crashes with relatively simple test cases.
>
> I agree that the feature is desirable, but I think getting there is
> going to require a huge amount of effort that may amount to a total
> rewrite of the patch.

Agreed. I think this needs very fundamental design work, and the patch itself
isn't worth reviewing until that's tackled.

Greetings,

Andres Freund

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