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

On Sun, Mar 4, 2018 at 4:37 PM, Thomas Munro
<thomas.munro@enterprisedb.com> wrote:
> Could it be that a concurrency bug causes tuples to be lost on the
> tuple queue, and also sometimes causes X (terminate) messages to be
> lost from the error queue, so that the worker appears to go away
> unexpectedly?

Could shm_mq_detach_internal() need a pg_write_barrier() before it
writes mq_detached = true, to make sure that anyone who observes that
can also see the most recent increase of mq_bytes_written?

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