While working to improve packaging and testing of the python-pypet package, I found that very many tests (approximately half) fail due to apparent endian issues in pandas.HDFStore. Here is a typical example: ====================================================================== ERROR: test_storage_and_loading (unittests.annotations_test.AnnotationsTest.test_storage_and_loading) ---------------------------------------------------------------------- Traceback (most recent call last): File "/builddir/build/BUILDROOT/python-pypet-0.5.2-30.fc40.s390x/usr/lib/python3.12/site-packages/pypet/tests/unittests/annotations_test.py", line 94, in test_storage_and_loading self.traj.f_store() File "/builddir/build/BUILDROOT/python-pypet-0.5.2-30.fc40.s390x/usr/lib/python3.12/site-packages/pypet/utils/decorators.py", line 163, in new_func return func(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/builddir/build/BUILDROOT/python-pypet-0.5.2-30.fc40.s390x/usr/lib/python3.12/site-packages/pypet/utils/decorators.py", line 163, in new_func return func(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/builddir/build/BUILDROOT/python-pypet-0.5.2-30.fc40.s390x/usr/lib/python3.12/site-packages/pypet/utils/decorators.py", line 121, in new_func return func(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/builddir/build/BUILDROOT/python-pypet-0.5.2-30.fc40.s390x/usr/lib/python3.12/site-packages/pypet/trajectory.py", line 2872, in f_store self._storage_service.store(pypetconstants.TRAJECTORY, self, File "/builddir/build/BUILDROOT/python-pypet-0.5.2-30.fc40.s390x/usr/lib/python3.12/site-packages/pypet/storageservice.py", line 1337, in store self._srvc_closing_routine(opened) File "/builddir/build/BUILDROOT/python-pypet-0.5.2-30.fc40.s390x/usr/lib/python3.12/site-packages/pypet/storageservice.py", line 1556, in _srvc_closing_routine os.fsync(f_fd) OverflowError: Python int too large to convert to C int I suspect the file descriptor is being loaded from HDF5 with the wrong endianness. I can’t find anywhere this would be happening in pypet; I think it is a pandas.HDFStore bug. Note that pandas does not test big-endian support but will happily accept patches to improve it: https://github.com/pandas-dev/pandas/issues/4737#issuecomment-1090931741 For now, I plan to add “ExcludeArch: s390x” to python-pypet. This bug is the tracking bug required under https://docs.fedoraproject.org/en-US/packaging-guidelines/#_architecture_build_failures.
This is very likely the same bug described in: https://src.fedoraproject.org/rpms/python-pandas/blob/c29517a7d496f6fc200f55725de4223746c2b2de/f/python-pandas.spec#_631
This bug appears to have been reported against 'rawhide' during the Fedora Linux 40 development cycle. Changing version to 40.
This package has changed maintainer in Fedora. Reassigning to the new maintainer of this component.
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