I wrote:
> I'm trying to reproduce this now, but it's sounding pretty plausible.
Yeah, that's definitely it. I was able to reproduce the failure semi
reliably (every two or three tries) after adding -DRELCACHE_FORCE_RELEASE
-DCATCACHE_FORCE_RELEASE and inserting a "pg_sleep(1)" just after the
manual vacuum in privileges.sql; and as you'd guessed, the stats arrays
were just normal size in the failing runs. After disabling autovac on
the table, the failure went away.
Thanks for the insight!
regards, tom lane
