On Fri, Nov 22, 2019 at 10:35:51AM -0300, Alvaro Herrera wrote:
> FWIW I think the new code is buggy because it doesn't seem to be setting
> ws_off, so I suppose the optimization in ReadPageInternal to skip
> reading the page when it's already the page we have is not hit, except
> for the first page in the segment. I didn't verify this, just my
> impression while reading the code.
FWIW, this matches with my impression here, third paragraph:
https://www.postgresql.org/message-id/20191120083802.GB47145@paquier.xyz
--
Michael