Brian Hirt <bhirt(at)mobygames(dot)com> writes:
> I can analyze that table without problems. I don't know if it's the
> same table every time. I'm trying to set up a development
> environment where i can test this stuff better without messing up our
> production systems. The table does have an expresional index.
I've managed to reproduce this: the triggering condition is that a
single autovac iteration has to VACUUM one table and then ANALYZE
(no vac) another table that has an expressional index with a plpgsql
function. It looks like we missed a path of control where
ActiveSnapshot has to be re-set-up, but I'm not clear where.
regards, tom lane