ValueError ValueError: numpy.ufunc has the wrong size, try recompiling. Expected 192, got 216

I think there’s an issue with the Conda-forge package for NumPy 1.15.x

conda create -n tst -c conda-forge --force python=3.6.7 fastparquet numpy=1.15.4 

bash-5.0$ python -c "import fastparquet"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Users/taugspurger/miniconda3/envs/tst/lib/python3.6/site-packages/fastparquet/__init__.py", line 8, in <module>
    from .core import read_thrift
  File "/Users/taugspurger/miniconda3/envs/tst/lib/python3.6/site-packages/fastparquet/core.py", line 9, in <module>
    from . import encoding
  File "/Users/taugspurger/miniconda3/envs/tst/lib/python3.6/site-packages/fastparquet/encoding.py", line 11, in <module>
    from .speedups import unpack_byte_array
  File "__init__.pxd", line 872, in init fastparquet.speedups
ValueError: numpy.ufunc has the wrong size, try recompiling. Expected 192, got 216

I haven’t diagnosed the issue yet. Using NumPy 1.16 is fine.

[martindurant]

@jrbourbeau , can you ping on that issue, maybe Marius can help. I don’t understand enough about the build process - maybe it will need more careful numpy version pinning?

[jrbourbeau]

FWIW https://github.com/conda-forge/fastparquet-feedstock/pull/27#issuecomment-514346076 mentions that this issue should be fixed, however I seemed to have stumbled across this ValueError with the latest fastparquet release on conda-forge (0.5.0) (xref https://github.com/dask/dask/pull/7006/checks?check_run_id=2035433841#step:7:16667)