WIP make default resource_tracker ignore FileNotFoundError?

[ogrisel]

I am wondering if we should just not make the resource tracker ignore FileNotFoundError by default for folders and files.

We have a test in joblib (test_resource_tracker_silent_when_reference_cycles) that is marked xfailed when the backend is joblib.

Not sure if this kind of situation should be dealt with specifically in joblib or more generally by default in loky. If we decide to do so, we to adapt the loky tests accordingly because the proposed change is breaking the assumption that and error should be raised.

Note that I have started to notice this kinds of warnings in the resource tracker also with the multiprocessing backend (with the PyPy CI worker), so maybe this should be changed in the upstream Python resource tracker config as well.

[ogrisel]

Might not be necessary since it can be fixed in joblib directly: joblib/joblib#1263

Closing for now. But I am still open to changing my mind on this later.