HyukjinKwon commented on a change in pull request #27565: [WIP][SPARK-30791]
Dataframe add sameSemantics and sementicHash method
URL: https://github.com/apache/spark/pull/27565#discussion_r379356166
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File path: python/pyspark/sql/dataframe.py
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@@ -2153,6 +2153,45 @@ def transform(self, func):
"should have been DataFrame." %
type(result)
return result
+ @since(3.1)
+ def sameSemantics(self, other):
+ """
Review comment:
The documentation seems mismatched with Scala side. I would suggest:
```
Returns `True` when the logical query plans inside both
:class:`DataFrame`\\s are equal and
therefore return same results.
.. note:: The equality comparison here is simplified by tolerating the
cosmetic differences
such as attribute names.
.. note::This API can compare both :class:`DataFrame`\\s very fast but can
still return `False` on
the :class:`DataFrame` that return the same results, for instance, from
different plans. Such
false negative semantic can be useful when caching as an example.
```
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