On Thu, Apr 23, 2020 at 12:28 PM Ashutosh Bapat
<ashutosh.bapat.oss@gmail.com> wrote:
> As it's presented in the patch I don't see much value in calling it as
> LSN arithmetic. If we could do something like LSN of Nth WAL record
> +/- <number of WAL records, n> = LSN of N+/- n th log record that
> would be interesting. :)
Well, that would mean that the value of x + 1 would depend not only on
x but on the contents of WAL, and that it would be uncomputable
without having the WAL available, and that adding large values would
be quite expensive.
I much prefer Fujii Masao's proposal.
--
Robert Haas
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