Re: Parallel Seq Scan

On Thu, Sep 17, 2015 at 6:29 AM, Haribabu Kommi <kommi.haribabu@gmail.com> wrote:
>
> On Thu, Sep 17, 2015 at 6:10 AM, Robert Haas <robertmhaas@gmail.com> wrote:
> > On Thu, Sep 10, 2015 at 12:12 AM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> >>> 2. I think it's probably a good idea - at least for now, and maybe
> >>> forever - to avoid nesting parallel plans inside of other parallel
> >>> plans.  It's hard to imagine that being a win in a case like this, and
> >>> it certainly adds a lot more cases to think about.
> >>
> >> I also think that avoiding nested parallel plans is a good step forward.
> >
> > Doing that as a part of the assess parallel safety patch was trivial, so I did.
> >
>
> I tried with latest HEAD code, seems to be problem is present in other
> scenarios.
>
As mentioned previously [1], we have to do two different things to make

this work, Robert seems to have taken care of one of those (basically

second point in mail[1]) and still another one needs to be taken care

which is to provide support of reading subplans in readfuncs.c and that

will solve the problem you are seeing now.