Re: TopoSort() fix

I'll try to figure out some scenarios to do the test. A parallel process
group is needed for the test.

Actually I was trying to do some testing against the locking mechanism. I
happened to see this issue.

On Wed, Jul 3, 2019 at 9:38 PM Robert Haas <robertmhaas(at)gmail(dot)com> wrote:

> On Tue, Jul 2, 2019 at 11:23 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > Rui Hai Jiang <ruihaij(at)gmail(dot)com> writes:
> > > I think I found an issue in the TopoSort() function.
> >
> > This indeed seems like a live bug introduced by a1c1af2a.
> > Robert?
>
> This is pretty thoroughly swapped out of my head, but it looks like
> that analysis might be correct.
>
> Is it practical to come up with a test case that demonstrates the problem?
>
> --
> Robert Haas
> EnterpriseDB: http://www.enterprisedb.com
> The Enterprise PostgreSQL Company
>