On 09/06/2016 16:04, Robert Haas wrote:
>
> OK, I pushed this after re-reviewing it and fixing a number of
> oversights. There remains only the task of adding max_parallel_degree
> as a system-wide limit (as opposed to max_parallel_degree now
> max_parallel_workers_per_gather which is a per-Gather limit), which
> I'm going to argue should be a new open item and not necessarily one
> that I have to own myself. I would like to take care of it, but I
> will not put it ahead of fixing actual defects and I will not promise
> to have it done in time for 9.6.
>
PFA a patch to fix this open item. I used the GUC name provided in the
9.6 open item page (max_parallel_workers), with a default value of 4.
Value 0 is another way to disable parallel query.
--
Julien Rouhaud
http://dalibo.com - http://dalibo.org