"Simon Riggs" <simon@2ndquadrant.com> writes:
> One of the main reasons for the implementation was to allow larger
> queries to work faster by utilising multiple temp tablespaces for the
> same query.
> The original ideal implementation was to use round-robin/cyclic
> selection, which allows much better usage in the above case.
Really? What if multiple backends are all hitting the same tablespaces
in the same order? A random selection seems much less likely to risk
having any self-synchronizing behavior.
regards, tom lane