On Thu, May 6, 2010 at 2:36 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> One reason I believe this isn't so critical as all that is that it only
> matters for cases where the operation on the master took an exclusive
> lock.
Uhm, or a vacuum ran. Or a HOT page cleanup occurred, or a btree page
split deleted old tuples.
--
greg