Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Tue, Jul 16, 2013 at 9:50 AM, Noah Misch <noah(at)leadboat(dot)com> wrote:
>> Let's fix this by having systable_recheck_tuple() acquire a fresh catalog MVCC
>> snapshot and recheck against that. I believe it would also be fully safe to
>> use SnapshotNow here; however, I'm assuming we would otherwise manage to
>> remove SnapshotNow entirely.
I agree with Robert's comments, and in addition suggest that this code
needs a comment about why it's safe to use the snapshot without doing
RegisterSnapshot or equivalent.
regards, tom lane