Re: Several issues with postgres_fdw stats import

From: Etsuro Fujita <etsuro(dot)fujita(at)gmail(dot)com>
To: Corey Huinker <corey(dot)huinker(at)gmail(dot)com>
Cc: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Several issues with postgres_fdw stats import
Date: 2026-09-22 11:38:52
Message-ID: CAPmGK14OBMkMEkanHdA9+JdrZLGzfNRcEVmb6K4DtDe_CTTTqw@mail.gmail.com
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On Fri, Sep 11, 2026 at 12:46 AM Corey Huinker <corey(dot)huinker(at)gmail(dot)com> wrote:
> On Thu, Sep 10, 2026 at 11:02 AM Etsuro Fujita <etsuro(dot)fujita(at)gmail(dot)com> wrote:

>> From a cost calculation perspective, I think it's appropriate to use
>> the imported relpages as-is, as it's used to estimate the cost for
>> remote operations, not local ones, and thus we should actually instead
>> fix the normal-ANALYZE handling to calculate the size based on the
>> remote definition of block size.
>
> +1

I expanded a comment to mention this. Attached is a patch for that.
I will push and back-patch the patch if no objections.

Best regards,
Etsuro Fujita

Attachment Content-Type Size
improve-stats-import-comments.patch application/octet-stream 710 bytes

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