Re: New gist vacuum.

From: Andrey Borodin <x4mmm(at)yandex-team(dot)ru>
To: Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Костя Кузнецов <chapaev28(at)ya(dot)ru>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Subject: Re: New gist vacuum.
Date: 2018-01-16 05:24:31
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Hi, Alexander!

Many thanks for looking into patches!
A little bit later I will provide answer in other branch of discussion.

> 15 янв. 2018 г., в 23:34, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> написал(а):
> I do not know, should I register separate commitfest entry? The code is very close to main GiST VACUUM patch, but solves a bit different problem.
> Yes, I think it deserves separate commitfest entry. Despite it's related to GiST VACUUM, it's a separate fix.
Ok, done.
> I've made small improvements to this patch: variable naming, formatting, comments.
Great, thanks!
> BTW, do we really need to set shouldCount depending on whether we receive stats argument or not? What if we always set shouldCount as in the first branch of "if"?
> shouldCount = !heap_attisnull(rel->rd_indextuple, Anum_pg_index_indpred) ||
> info->estimated_count;
We do not need to count if we have exact count from heap and this index is not partial. ITSM that it is quite common case.

Best regards, Andrey Borodin.

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