Re: select_parallel test failure: gather sometimes losing tuples(maybe during rescans)?

On Sun, Mar 4, 2018 at 4:07 PM, Tomas Vondra
<tomas.vondra@2ndquadrant.com> wrote:
> I've started "make check" with parallel_schedule tweaked to contain many
> select_parallel runs, and so far I've seen a couple of failures like
> this (about 10 failures out of 1500 runs):
>
>   select count(*) from tenk1, tenk2 where tenk1.hundred > 1 and
> tenk2.thousand=0;
> ! ERROR:  lost connection to parallel worker
>
> I have no idea why the worker fails (no segfaults in dmesg, nothing in
> posgres log), or if it's related to the issue discussed here at all.

That sounds like the new defences from 2badb5afb89cd569500ef7c3b23c7a9d11718f2f.

-- 
Thomas Munro
http://www.enterprisedb.com