Re: WIP: Avoid creation of the free space map for small tables

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: John Naylor <john(dot)naylor(at)2ndquadrant(dot)com>
Cc: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: WIP: Avoid creation of the free space map for small tables
Date: 2019-02-26 15:20:04
Message-ID: 20190226152004.GA9037@alvherre.pgsql
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On 2019-Feb-23, John Naylor wrote:

> On Fri, Feb 22, 2019 at 3:59 AM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> > The reason for not pushing much on making the test pass for
> > nonstandard block sizes is that when I tried existing tests, there
> > were already some failures.
>
> FWIW, I currently see 8 failures (attached).

Hmm, not great -- even the strings test fails, which seems to try to handle
the case explicitly. I did expect the plan shape ones to fail, but I'm
surprised about the tablesample one.

--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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