Hi Thomas, Correct. We're running with disabled parallel leader participation and we have to do so, because another custom plan node we built relies on that. That would be great. Anything else I can help with to get this patch in?
Thanks! -- David (ServiceNow) On Fri, 3 Jun 2022 at 00:06, Thomas Munro <thomas.mu...@gmail.com> wrote: > On Thu, Jun 2, 2022 at 9:31 PM David Geier <geidav...@gmail.com> wrote: > > We recently encountered the same bug in the field. Oleksii Kozlov > managed to come up with reproduction steps, which reliably trigger it. > Interestingly, the bug does not only manifest as failing assertion, but > also as segmentation fault; in builds with disabled and with enabled (!) > assertions. So it can crash production environments. We applied the > proposed patch v3 from Melanie to the REL_14_3 branch and can confirm that > with the patch neither the assertion nor the segmentation fault still occur. > > Thanks for the report, testing, and for creating the CF entry. > > I assume you are using parallel_leader_participation=off, and the > reason we haven't heard more about this is because few people do that. > By coincidence I was just about to restart a bunch of hash join > projects and have been paging the topic area back into my brain, so > I'll start with another round of testing/analysis of this bug/patch > next week. >
