Re: Pg11 server w/parallel backends unresponsive to cancel/terminate... (here are some backtraces) - Mailing list pgsql-admin

Jerry Sievers <gsievers19@comcast.net> writes:
> Included a few backtraces...

Hmm, seems like you've managed to hit an infinite loop in LLVM :-(

That explains why it's not responding to SIGTERM - LLVM would not
know that it's supposed to check for interrupts every so often.
I'm afraid you'll have to go the immediate-shutdown route (and it'll
still take a few seconds).

Going forward, you should try to update to newest LLVM.  Or disable JIT.

            regards, tom lane