On Tue, Sep 29, 2020 at 9:12 PM Thomas Munro <thomas.munro@gmail.com> wrote: > On Tue, Sep 29, 2020 at 7:11 PM Michael Paquier <michael@paquier.xyz> wrote: > > #2 0x00000000009027d2 in ExceptionalCondition > > (conditionName=conditionName@entry=0xa80846 "!barrier->static_party", > > > #4 0x0000000000682ebf in ExecParallelHashJoinNewBatch > > Thanks. Ohhh. I think I see how that condition was reached and what > to do about it, but I'll need to look more closely. I'm away on > vacation right now, and will update in a couple of days when I'm back > at a real computer.
Here's a throw-away patch to add some sleeps that trigger the problem, and a first draft fix. I'll do some more testing of this next week and see if I can simplify it.
I was just taking a look at the patch and noticed the commit message says:
> With unlucky timing and parallel_leader_participation off...
Is parallel_leader_participation being off required to reproduce the issue?
