On Sun, Feb 10, 2019 at 10:05 AM Tom Lane <t...@sss.pgh.pa.us> wrote: > Peter Geoghegan <p...@bowt.ie> writes: > > On Fri, Feb 8, 2019 at 6:00 PM Tom Lane <t...@sss.pgh.pa.us> wrote: > The v10 release notes just say > > Reduce page locking during vacuuming of <acronym>GIN</acronym> indexes > (Andrey Borodin) > > so it doesn't seem like there's any difference at that level of detail. > But I'll expand the new release note, say > > This change partially reverts a performance improvement, introduced > in version 10, that attempted to reduce the number of index pages > locked during deletion of a GIN posting tree page. That's now been > found to lead to deadlocks, so we've removed it pending closer > analysis.
That plan seems sensible to me. The wording looks good, too. -- Peter Geoghegan
