On Wed, Dec 12, 2012 at 1:35 AM, Robert Haas <robertmh...@gmail.com> wrote: > On Tue, Dec 4, 2012 at 12:10 PM, Pavan Deolasee > <pavan.deola...@gmail.com> wrote: >> Hmm. Yeah, I do not have guts to prove that either. I'll probably write up a >> comment for your consideration to explain why we don't trust PD_ALL_VISIBLE >> in Hot standby for seq scans, but still trust VM for index-only scans. > > Sure. >
Here is a small patch that adds comments to heap scan code explaining why we don't trust the all-visible flag in the page, still continue to support index-only scans on hot standby. Thanks, Pavan -- Pavan Deolasee http://www.linkedin.com/in/pavandeolasee
hot-standby-pd-all-visible-heapscan.patch
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