Jarred Ward <jarred(at)simple(dot)com> writes:
> We are experiencing a crash with parallel worker processes enabled in
> one of our production 9.6.3 databases on Linux. When parallel workers
> are disable, the issue does not occur.
Huh. datumEstimateSpace is just wrong for fixed-length types such as uuid.
Too bad you didn't report this two days ago, when we could have gotten
the fix into 9.6.4 :-(. But thanks for the report, anyway!
regards, tom lane