On Sun, Aug 2, 2020 at 9:39 PM Kyotaro Horiguchi
<horikyota.ntt@gmail.com> wrote:
> All of the cited log lines seem suggesting relation with deleted btree
> page items. As a possibility I can guess, that can happen if the pages
> were flushed out during a vacuum after the last checkpoint and
> full-page-writes didn't restored the page to the state before the
> index-item deletion happened(that is, if full_page_writes were set to
> off.). (If it found to be the cause, I'm not sure why that didn't
> happen on 9.5.)
There is also a Heap/HOT_UPDATE log line with similar errors.
--
Peter Geoghegan