Re: Improve search for missing parent downlinks in amcheck

On Tue, Apr 16, 2019 at 12:00 PM Peter Geoghegan <pg(at)bowt(dot)ie> wrote:
> On Mon, Apr 15, 2019 at 7:30 PM Alexander Korotkov
> <a(dot)korotkov(at)postgrespro(dot)ru> wrote:
> > Currently we amcheck supports lossy checking for missing parent
> > downlinks. It collects bitmap of downlink hashes and use it to check
> > subsequent tree level. We've experienced some large corrupted indexes
> > which pass this check due to its looseness.
>
> Can you be more specific? What was the cause of the corruption? I'm
> always very interested in hearing about cases that amcheck could have
> detected, but didn't.

Ping?

I am interested in doing better here. The background information seems
very interesting.

--
Peter Geoghegan