Re: [PATCH] Incremental sort (was: PoC: Partial sort)

From: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
To: Justin Pryzby <pryzby(at)telsasoft(dot)com>
Cc: James Coleman <jtc331(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Rafia Sabih <rafia(dot)pghackers(at)gmail(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Shaun Thomas <shaun(dot)thomas(at)2ndquadrant(dot)com>, Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Andreas Karlsson <andreas(at)proxel(dot)se>
Subject: Re: [PATCH] Incremental sort (was: PoC: Partial sort)
Date: 2020-04-07 23:02:07
Message-ID: 20200407230207.uqrch5zmotgamqbw@development
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On Mon, Apr 06, 2020 at 11:25:21PM -0500, Justin Pryzby wrote:
>On Mon, Apr 06, 2020 at 09:57:22PM +0200, Tomas Vondra wrote:
>> I've pushed the fist part of this patch series - I've reorganized it a
>
>I scanned through this again post-commit. Find attached some suggestions.
>

Thanks. The typo fixes seem clear, except for this bit:

* If we've set up either of the sort states yet, we need to reset them.
* We could end them and null out the pointers, but there's no reason to
* repay the setup cost, and because ???? guard setting up pivot comparator
* state similarly, doing so might actually cause a leak.

I can't figure out what ???? should be. James, do you recall what this
should be?

regards

--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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