Peter Geoghegan <pg@bowt.ie> writes:
> On Wed, Aug 8, 2018 at 7:40 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Oooh ... but pg_class wouldn't be big enough to get a parallel
>> index rebuild during that test, would it?
> Typically not, but I don't think that we can rule it out right away.
Hmmm ... maybe we should temporarily stick in an elog(LOG) showing whether
a parallel build happened or not, so that we can check the buildfarm logs
next time we see that failure?
> I don't know all that much about the buildfarm client code, and it's
> late.
It doesn't really stick in any undocumented configuration changes,
AFAIK. Possibly Andrew would have some more insight.
regards, tom lane