Re: POC: make mxidoff 64 bits

Hi Maxim
Thank you for your feedback.I remember this path the primary
challenges are in the upgrade section, where we're still debating how to
address a few edge cases. Right now, this thread is missing input from core
code contributors.

Thanks

On Fri, Sep 19, 2025 at 12:37 AM Maxim Orlov <orlovmg(at)gmail(dot)com> wrote:

>
> On Tue, 16 Sept 2025 at 15:12, wenhui qiu <qiuwenhuifx(at)gmail(dot)com> wrote:
>
>>
>> Agree +1 , but I have a question: I remember the XID64 patch got split
>> into a few threads. How are these threads related? The original one was
>> seen as too big a change, so it was broken up after people raised
>> concerns.
>>
> Yeah, you're absolutely correct. This thread is a part of the overall
> work on the transition to XID64 in Postgres. As far as I remember, no
> one explicitly raised concerns, but it's clear to me that it won't be
> committed as one big patch set.
>
> Here is a WIP patch @ 8191e0c16a for the discussed above issue.
> I also had to merge several patches from the previous set, since the
> consensus is to use the PRI* format for outputting 64-bit values, and a
> separate patch that only changed the format with cast and %llu lost
> it's meaning.
>
> If this option suits everyone, the next step is to add a part related
> to the pg_upgrade.
>
> --
> Best regards,
> Maxim Orlov.
>