Re: [HACKERS] intermittent failures in Cygwin from select_parallel tests - Mailing list pgsql-hackers

On Thu, Jun 15, 2017 at 10:38 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
>> On Thu, Jun 15, 2017 at 10:32 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> It's fairly hard to read this other than as telling us that the worker was
>>> launched for the EXPLAIN (although really? why aren't we skipping that if
>>> EXEC_FLAG_EXPLAIN_ONLY?), ...
>
>> Uh, because ANALYZE was used?
>
> ... er, -ENOCAFFEINE.  Nonetheless, there are no checks of
> EXEC_FLAG_EXPLAIN_ONLY in any parallel-query code, so I think
> a bet is being missed somewhere.

ExecGather() is where workers get launched, and that ain't happening
if EXEC_FLAG_EXPLAIN_ONLY is set, unless I am *very* confused about
how this works.

-- 
Robert Haas
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