Re: POC: converting Lists into arrays

From: Jesper Pedersen <jesper(dot)pedersen(at)redhat(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: POC: converting Lists into arrays
Date: 2019-07-01 19:18:02
Message-ID: bbe340c9-76fb-c66d-8a14-73168f0b89b9@redhat.com
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Hi,

On 7/1/19 2:44 PM, Tom Lane wrote:
> Yup, here's a rebase against HEAD (and I also find that check-world shows
> no problems).

Thanks - no further comments.

> This is pretty much of a pain to maintain, since it changes
> the API for lnext() which is, um, a bit invasive. I'd like to make a
> decision pretty quickly on whether we're going to do this, and either
> commit this patch or abandon it.
>

IMHO it is an improvement over the existing API.

>> There is some unneeded MemoryContext stuff in async.c's
>> pg_listening_channels() which should be cleaned up.
>
> Yeah, there's a fair amount of follow-on cleanup that could be undertaken
> afterwards, but I've wanted to keep the patch's footprint as small as
> possible for the moment. Assuming we pull the trigger, I'd then go look
> at removing the planner's duplicative lists+arrays for RTEs and such as
> the first cleanup step. But thanks for the pointer to async.c, I'll
> check that too.
>

Yeah, I only called out the async.c change, as that function isn't
likely to change in any of the follow up patches.

Best regards,
Jesper

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