Tom Lane wrote:
> System catalog lookups generally follow SnapshotNow rules, not MVCC.
> So the new function definition is visible as soon as it's committed,
> whether you are in a serializable transaction or not.
IMHO this is a bug, or at least not optimal behavior. But per the
discussion on -hackers on this topic a few months ago, it seems pretty
difficult to fix.
-Neil
