On Fri, Mar 11, 2016 at 1:31 PM, Peter Geoghegan <pg@heroku.com> wrote:
> You could have a race, where
> there was a concurrent page deletion of the left sibling of the child
> page, then a concurrent insertion into the newly expanded keyspace of
> the parent. Therefore, the downlink in the parent (which is the
> "target", to use the patch's terminology) would not be a lower bound
> on items in the page.
Excuse me: I meant the newly expanded keyspace of the *child*. (The
parent's keyspace would have covered everything. It's naturally far
larger than either child's keyspace, since it typically has several
hundred pages.)
--
Peter Geoghegan
