Alvaro Herrera wrote:
> Right now we flip hint bits without taking any kind
> of lock on the page.
That's not quite true. You need to hold a shared lock on heap page to
examine the visibility of a tuple, and that's when the hint bits are
set. So we always hold at least a shared lock on the page while hint
bits are set.
-- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com
