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Re: Possible inaccurate description of wal_compression in docs - Mailing list pgsql-hackers

From Xuneng Zhou
Subject Re: Possible inaccurate description of wal_compression in docs
Date
Msg-id CABPTF7UG3ug281KLbpwwzcJP9VKzJmm4420Zk5gB9yPfuOHiNw@mail.gmail.com
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In response to Possible inaccurate description of wal_compression in docs  (Jingtang Zhang <mrdrivingduck@gmail.com>)
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Hi,

On Sun, Aug 10, 2025 at 6:53 PM Jingtang Zhang <mrdrivingduck@gmail.com> wrote:
>
> Hi hackers~
>
> I find the specification of wal_compression in our docs a little bit confusing
> for it 'compress full page images when FPW is on or during a base backup',
> which was true before v17. Since v17, we will also use full page images for
> creating index or table rewrites through bulk write, so it is inaccurate.
>
> Should we change the doc a little bit: 'compress full page images written
> to WAL, **like** when FPW is on, or during a base backup', if we may use
> FPI in other places in the future?
>

+1 for the update.

Best,
Xuneng

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