Mark Dilger <hornschnorter@gmail.com> writes:
> On 11/21/19 8:03 PM, Tom Lane wrote:
>> I also confirm that it only happens in HEAD, not v12. I've not
>> actually bisected, but a look at the git history for predicate.c
>> sure makes it look like db2687d1f ("Optimize PredicateLockTuple")
>> must be to blame.
> `git bisect` shows the problem occurs earlier than that, and by
> chance the first bad commit was one of yours. I'm not surprised
> that your commit was regarding LISTEN/NOTIFY, as the error is
> always triggered with a LISTEN statement. (I've now hit this
> many times in many tests of multiple SQL statements, and the
> last statement before the error is always a LISTEN.)
Oh my, that's interesting! I had wondered a bit about the LISTEN
changes, but it's hard to see how those could have any connection
to serializable mode. This will be an entertaining debugging
exercise ...
regards, tom lane