Re: Parallel Seq Scan

2015-11-16 14:17 GMT+01:00 Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>:

> On Mon, Nov 16, 2015 at 4:35 AM, Robert Haas <robertmhaas(at)gmail(dot)com>
> wrote:
> >
> > On Fri, Nov 13, 2015 at 10:46 AM, Thom Brown <thom(at)linux(dot)com> wrote:
> > >>> And perhaps associated PIDs?
> > >>
> > >> Yeah, that can be useful, if others also feel like it is important, I
> can
> > >> look into preparing a patch for the same.
> > >
> > > Thanks.
> >
> > Thom, what do you think the EXPLAIN output should look like,
> > specifically? Or anyone else who feels like answering.
> >
> > I don't think it would be very useful to repeat the entire EXPLAIN
> > output n times, once per worker. That sounds like a loser.
> >
>
> Yes, it doesn't seem good idea to repeat the information, but what
> about the cases when different workers perform scan on different
> relations (partitions in case of Append node) or may be performs a
> different operation in Sort or join node parallelism.
>

+1

Pavel

>
>
> With Regards,
> Amit Kapila.
> EnterpriseDB: http://www.enterprisedb.com
>