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An error about multiprocessing of Python

 3 years ago
source link: http://www.donghao.org/2021/04/08/an-error-about-multiprocessing-of-python/
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An error about multiprocessing of Python

Our python program reported errors when running a new dataset:

[77 rows x 4 columns]]'. Reason: 'error("'i' format requires -2147483648 <= number <= 2147483647",)'
multiprocessing.pool.MaybeEncodingError: Error sending result: '[                          id  ... email_send_date
    raise self._value
  File "/usr/local/lib/python3.6/multiprocessing/pool.py", line 644, in get
    return self._map_async(func, iterable, mapstar, chunksize).get()
  File "/usr/local/lib/python3.6/multiprocessing/pool.py", line 266, in map
    dfs = pool.map(partial(pd.read_parquet, **kwargs), file_list)
Python
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[77 rows x 4 columns]]'. Reason: 'error("'i' format requires -2147483648 <= number <= 2147483647",)'
multiprocessing.pool.MaybeEncodingError: Error sending result: '[                          id  ... email_send_date
    raise self._value
  File "/usr/local/lib/python3.6/multiprocessing/pool.py", line 644, in get
    return self._map_async(func, iterable, mapstar, chunksize).get()
  File "/usr/local/lib/python3.6/multiprocessing/pool.py", line 266, in map
    dfs = pool.map(partial(pd.read_parquet, **kwargs), file_list)

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