Re: random isolation test failures

Alvaro Herrera <alvherre@commandprompt.com> writes:
> I just tweaked isolationtester so that it collects the error messages
> and displays them all together at the end of the test.  After seeing it
> run, I didn't like it -- I think I prefer something more local, so that
> in the only case where we call try_complete_step twice in the loop, we
> report any errors in either.  AFAICS this would make both expected cases
> behave identically in test output.

Hmm, is that really an appropriate fix?  I'm worried that it might mask
event-ordering differences that actually are significant.
        regards, tom lane