Re: Hypothetical indexes using BRIN broken since pg10

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Cc: Julien Rouhaud <rjuju123(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Hypothetical indexes using BRIN broken since pg10
Date: 2019-06-27 19:30:40
Message-ID: 5455.1561663840@sss.pgh.pa.us
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Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
> On 2019-Jun-27, Tom Lane wrote:
>> Um ... it's accounting for revmap pages already (which is why it needs
>> this field set), so hasn't that ship sailed?

> Yes, but does it need to know how many items there are in a revmap page?

Dunno, I just can't get excited about exposing REVMAP_PAGE_MAXITEMS.
Especially not since we seem to agree on the long-term solution here,
and what you're suggesting to Julien doesn't particularly fit into
that long-term solution.

regards, tom lane

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