Kyotaro Horiguchi wrote on 8/2/20 9:39 PM:
> At Sat, 1 Aug 2020 09:58:05 -0700, Ben Chobot <bench@silentmedia.com> wrote in
> 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.)
>
> regards.
We have always had full_page_writes enabled.
