HyukjinKwon commented on code in PR #41947:
URL: https://github.com/apache/spark/pull/41947#discussion_r1261940449
##########
python/pyspark/testing/utils.py:
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@@ -234,14 +240,24 @@ def assertDataFrameEqual(df: DataFrame, expected:
DataFrame, check_row_order: bo
----------
df : DataFrame
The DataFrame that is being compared or tested.
-
expected : DataFrame
The expected result of the operation, for comparison with the actual
result.
-
check_row_order : bool, optional
A flag indicating whether the order of rows should be considered in
the comparison.
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.
+ rtol : float, optional
+ The relative tolerance, used in asserting approximate equality for
float values in df
+ and expected. Set to 1e-5 by default. (See Notes)
+ atol : float, optional
+ The absolute tolerance, used in asserting approximate equality for
float values in df
+ and expected. Set to 1e-8 by default. (See Notes)
+
+ Notes
+ -----
+ If the following equation is True for two float values a and b, then they
are approximately
+ equal.
+ :math: absolute(a - b) <= (atol + rtol * absolute(b))
Review Comment:
```suggestion
equal. ``absolute(a - b) <= (atol + rtol * absolute(b))``.
```
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