Reduction functions doesn't work correctly if numeric_only!=False #1976
Description
System information
- OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
Windows 10 - Modin installed from (source or binary):
source - Modin version:
0.8.0+35.g90a3445.dirty - Python version:
Python 3.7.6 - Exact command to reproduce:
python test.py
test.py:
import pandas
import numpy as np
import modin.pandas as pd
data = {
"float_col": [np.NaN, 9.4, 10.1, np.NaN],
"str_col": ["a", np.NaN, "c", "d"],
"bool_col": [False, True, True, False],
}
modin_df = pd.DataFrame(data)
pandas_df = pandas.DataFrame(data)
print(f"pandas:\n{pandas_df.sum(min_count=1)}")
print(f"modin:\n{modin_df.sum(min_count=1)}")Describe the problem
Different from pandas result.
Pandas result:
pandas:
float_col 19.5
bool_col 2.0
dtype: float64
Source code / logs
Modin exception:
Traceback (most recent call last):
File "test.py", line 15, in <module>
print(f"modin:\n{modin_df.sum(min_count=1)}")
File "modin\pandas\base.py", line 3512, in __str__
return repr(self)
File "modin\pandas\series.py", line 307, in __repr__
temp_df = self._build_repr_df(num_rows, num_cols)
File "modin\pandas\base.py", line 108, in _build_repr_df
return self.iloc[indexer]._query_compiler.to_pandas()
File "modin\backends\pandas\query_compiler.py", line 191, in to_pandas
return self._modin_frame.to_pandas()
File "modin\engines\base\frame\data.py", line 1801, in to_pandas
"Internal and external indices do not match.",
File "modin\error_message.py", line 54, in catch_bugs_and_request_email
" caused this error.\n{}".format(extra_log)
Exception: Internal Error. Please email bug_reports@modin.org with the traceback and command that caused this error.
Internal and external indices do not match.