Andres Freund <andres@anarazel.de> writes:
> On 2018-04-07 21:53:01 +0300, Teodor Sigaev wrote:
>> test select_parallel ... FAILED
>>
>> I don't understand how it's connected to json_to_tsquery. Can somebody point
>> me what I'm missing?
> Given that it "only" failed during upgrade check, not the earlier
> parallel check, it is possible that it's entirely unrelated and just a
> low likelihood event?
Yes. We've seen that exact symptom before:
https://www.postgresql.org/message-id/7752.1515284083@sss.pgh.pa.us
I have a suspicion that it's related to the significantly-more-common
plan instability we've been seeing in postgres_fdw.
regards, tom lane
