Re: XID formatting and SLRU refactorings

From: Alexander Korotkov <aekorotkov(at)gmail(dot)com>
To: Aleksander Alekseev <aleksander(at)timescale(dot)com>
Cc: Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Pavel Borisov <pashkin(dot)elfe(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Maxim Orlov <orlovmg(at)gmail(dot)com>, Japin Li <japinli(at)hotmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Michael Paquier <michael(at)paquier(dot)xyz>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>
Subject: Re: XID formatting and SLRU refactorings
Date: 2023-11-28 18:03:46
Message-ID: CAPpHfdsNZV4mAtjpAWkWOh6HF7D13E7Zg3UHGpDXa_z7UT8tKg@mail.gmail.com
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Hi!

On Tue, Nov 28, 2023 at 2:06 PM Aleksander Alekseev
<aleksander(at)timescale(dot)com> wrote:
>
> >> > I think what's done in patch 0001 is just an extension of existing
> >> > logic and moving it into separate function.
> >>
> >> That's right. I'm arguing that now is a good time to clean it up.
> >>
> >> I won't insist if Alexander prefers to commit it as it is, though. But
> >> let's at least explain how this works in the comment, instead of the XXX.
> >
> > I agree with you that would be good to add a comment instead of XXX and commit.
>
> +1
>
> One could argue that getting rid of short filenames entirely in the
> long term (i.e. always long_segment_names == true) could be a better
> strategy. Maybe it's not but I believe this should be discussed
> separately from the patchset under question.

Heikki, thank you for catching this.

This mess with file names formats already lasts quite long. I don't
think we should hurry unifying this as long as we're anyway going to
change that in near future.

Please, find the revised patchset with relevant comment.

------
Regards,
Alexander Korotkov

Attachment Content-Type Size
0003-Make-use-FullTransactionId-in-2PC-filenames-v62.patch application/octet-stream 3.3 KB
0002-Use-larger-segment-file-names-for-pg_notify-v62.patch application/octet-stream 13.4 KB
0004-Add-SLRU-tests-for-64-bit-page-case-v62.patch application/octet-stream 5.6 KB
0001-Index-SLRUs-by-64-bit-integers-rather-than-by-32-v62.patch application/octet-stream 56.9 KB

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