Re: Trying to break online checksums with LLMs

From: "Greg Burd" <greg(at)burd(dot)me>
To: "Robert Haas" <robertmhaas(at)gmail(dot)com>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "Daniel Gustafsson" <daniel(at)yesql(dot)se>, "PostgreSQL Hackers" <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Trying to break online checksums with LLMs
Date: 2026-09-10 21:04:17
Message-ID: 5d89549c-117e-45ae-b934-a2bb71c82a79@app.fastmail.com
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On Thu, Sep 10, 2026, at 4:51 PM, Robert Haas wrote:
> On Thu, Sep 10, 2026 at 4:37 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Don't we have logic somewhere to clean up orphaned relation files?
>
> Uh ... no?
>
> I mean, temp tables get cleaned up and unlogged tables get reset to
> empty, but the goal of being able to remove permanent relation files
> instead of permanently leaking them has, to my knowledge, thus far
> eluded us. I had hope to address that when working on UNDO, and other
> people have tried as well, but unless I've missed something big,
> nobody has thus far succeeded.

This is incoming with my resurrection of the UNDO work you and other
did and the addition of what I call "FILEOPS".

ETA... a week, target v20.

-greg

> --
> Robert Haas
> EDB: http://www.enterprisedb.com

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