[Debian-med-packaging] Bug#977067: Bug#977060: cwltool FTBFS with pytest 6

[Étienne Mollier]

Control: retitle -1 igdiscover: test suite flaky, possibly on high core count machines
Control: severity -1 important
Control: tag -1 confirmed

Hi Christian, Hi Nilesh,

Christian Kastner, on 2021-02-11 15:46:16 +0100:
> On 11.02.21 15:20, Nilesh Patra wrote:
> > According to last reproducible build result[1] shows that it is building successfully on January 31, 2021 (~52 days after this bug was reported)
> > However there are a few FTBFS entries in there as well. So probably this is an occasional failure?
> > 
> > [1]: https://tests.reproducible-builds.org/debian/history/amd64/igdiscover.html
> 
> I tried N=1 build, and this time it succeeded.
> 
> But Nilesh is right, reproducible builds failed occasionally, with the
> errors as I reported above. It looks as if some of the tests are flaky.

Thanks for your observations.  The test suite stubbornly
succeeds on my six cores equipment.  I see failures on amd64 and
arm64 machines in reproducible builds reports.  If I'm right,
those hosts may have notoriously high cores count (>100).

The issue might be caused by a race to read/write test data, or
something more subtle.  I would guess a path of least resistance
would be to drop parallelization, at least for the test suite.
I'm afraid I'm not having an appropriate configuration to wrap
up a fix and test that kind of issues at the moment.

> Now, because these failures are not a pytest issue, I don't think this
> bug is valid any longer -- pytest 6 compatibility was the goal, and it
> is present.
> 
> Please feel free to downgrade and retitle for the flakiness issue.

Thanks, the bug meta-informations should be accurate now, modulo
typos.

Have a nice day,  :)
-- 
Étienne Mollier <etienne.mollier at mailoo.org>
Fingerprint:  8f91 b227 c7d6 f2b1 948c  8236 793c f67e 8f0d 11da
Sent from /dev/pts/2, please excuse my verbosity.
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