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Fix flaky test_dataframe_aggregations_multilevel #9701

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merged 4 commits into from Dec 1, 2022
Merged

Fix flaky test_dataframe_aggregations_multilevel #9701

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9a0bbdf
fix _mul_cols for empty index
rjzamora Nov 29, 2022
7066032
add note about int64 dtype
rjzamora Nov 29, 2022
17ba39a
Update dask/dataframe/groupby.py
rjzamora Nov 30, 2022
30c2022
Update _drop_duplicates_reindex
jrbourbeau Nov 30, 2022
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8 changes: 6 additions & 2 deletions dask/dataframe/groupby.py
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Expand Up @@ -531,7 +531,9 @@ def _mul_cols(df, cols):
# Fix index in a groupby().apply() context
# https://github.com/dask/dask/issues/8137
# https://github.com/pandas-dev/pandas/issues/43568
_df.index = [0] * len(_df)
# Make sure index dtype is int (even if _df is empty)
# https://github.com/dask/dask/pull/9701
_df.index = np.zeros(len(_df), dtype=int)
return _df


Expand Down Expand Up @@ -640,8 +642,10 @@ def _drop_duplicates_reindex(df):
# Fix index in a groupby().apply() context
# https://github.com/dask/dask/issues/8137
# https://github.com/pandas-dev/pandas/issues/43568
# Make sure index dtype is int (even if result is empty)
# https://github.com/dask/dask/pull/9701
result = df.drop_duplicates()
result.index = [0] * len(result)
result.index = np.zeros(len(result), dtype=int)
return result


Expand Down