Re: A failure of standby to follow timeline switch

At Sat, 26 Dec 2020 02:15:06 +0900, Fujii Masao <masao.fujii@oss.nttdata.com> wrote in 
> 
> 
> On 2020/12/25 12:03, Kyotaro Horiguchi wrote:
> > Thank you for looking this.
> > At Thu, 24 Dec 2020 15:33:04 +0900, Fujii Masao
> > <masao.fujii@oss.nttdata.com> wrote in
> >> When I applied two patches in the master branch and
> >> ran "make check-world", I got the following error.
> >>
> >> ============== creating database "contrib_regression" ==============
> >> # Looks like you planned 37 tests but ran 36.
> >> # Looks like your test exited with 255 just after 36.
> >> t/001_stream_rep.pl ..................
> >> Dubious, test returned 255 (wstat 65280, 0xff00)
> >> Failed 1/37 subtests
> >> ...
> >> Test Summary Report
> >> -------------------
> >> t/001_stream_rep.pl                (Wstat: 65280 Tests: 36 Failed: 0)
> >>    Non-zero exit status: 255
> >>    Parse errors: Bad plan.  You planned 37 tests but ran 36.
> >> Files=21, Tests=239, 302 wallclock secs ( 0.10 usr 0.05 sys + 41.69
> >> cusr 39.84 csys = 81.68 CPU)
> >> Result: FAIL
> >> make[2]: *** [check] Error 1
> >> make[1]: *** [check-recovery-recurse] Error 2
> >> make[1]: *** Waiting for unfinished jobs....
> >> t/070_dropuser.pl ......... ok
> > Mmm. I retried that and saw it succeed (with 0002 applied).
> > If I modified "user Test::More tests => 37" to 38 in the perl file, I
> > got a similar result.
> 
> What happens if you run make check-world with -j 4? When I ran that,
> the test failed. But with -j 1, the test finished with success. I'm
> not sure
> why this happened, though..

Maybe this is it.

+	usleep(100_000);

If the script doesn't find the expected log line, it reaches the
usleep and bark that "Undefined subroutine &main::usleep called...". I
thought I tested that path but perhaps I overlooked the error. "use
Time::HiRes" is needed.

The attached is the fixed version.

regards.

-- 
Kyotaro Horiguchi
NTT Open Source Software Center