Robert Haas <robertmh...@gmail.com> writes: > No, I wasn't thinking about a tuple descriptor mismatch. I was > imagining that the page contents themselves might be in flux while > we're trying to read from it.
Oh, gotcha. Yes, that's a horribly plausible idea. All it'd take is one WAL replay routine that hasn't been upgraded to acquire sufficient buffer locks. Pre-hot-standby, there was no reason for them to be careful about locking. On the other hand, if that were the cause, you'd expect the symptoms to be a bit more variable... regards, tom lane -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs