[HACKERS] intermittent failures in Cygwin from select_parallel tests

Buildfarm member lorikeet is failing occasionally with a failed
assertion during the select_parallel regression tests like this:

   2017-06-03 05:12:37.382 EDT [59327d84.1160:38] LOG:  statement: select count(*) from tenk1, tenk2 where
tenk1.hundred> 1 and tenk2.thousand=0;   TRAP: FailedAssertion("!(vmq->mq_sender == ((void *)0))", File:
"/home/andrew/bf64/root/HEAD/pgsql.build/../pgsql/src/backend/storage/ipc/shm_mq.c",Line: 221)
 

I'll see if I can find out why, but if anyone has any ideas why this might be happening (started about 3 weeks ago)
thatwould be helpful.
 

cheers

andrew

-- 
Andrew Dunstan                https://www.2ndQuadrant.com
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