zhengruifeng commented on code in PR #41947:
URL: https://github.com/apache/spark/pull/41947#discussion_r1260511824
##########
python/pyspark/testing/utils.py:
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@@ -243,6 +245,10 @@ def assertDataFrameEqual(df: DataFrame, expected:
DataFrame, check_row_order: bo
If set to `False` (default), the row order is not taken into account.
If set to `True`, the order of rows is important and will be checked
during comparison.
+ precision : float, optional
+ The level of precision when asserting approximate equality for float
values in df
+ and expected. Set to 1e-5 by default.
Review Comment:
good point, we actually use `rtol` and `atol` in both scala and python:
in python:
https://github.com/apache/spark/blob/5a702f22f49ca6a1b6220ac645e3fce70ec5189d/python/pyspark/ml/tests/test_algorithms.py#L390-L396
https://github.com/apache/spark/blob/f3edc0c3570ea4b28f68607d6404c6b8d0801161/python/pyspark/pandas/tests/plot/test_series_plot_matplotlib.py#L364-L367
in scala:
https://github.com/apache/spark/blob/d679dabdd1b5ad04b8c7deb1c06ce886a154a928/mllib/src/test/scala/org/apache/spark/ml/classification/LogisticRegressionSuite.scala#L379-L400
https://github.com/apache/spark/blob/d679dabdd1b5ad04b8c7deb1c06ce886a154a928/mllib/src/test/scala/org/apache/spark/ml/regression/GeneralizedLinearRegressionSuite.scala#L1021-L1040
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