srowen commented on a change in pull request #29242:
URL: https://github.com/apache/spark/pull/29242#discussion_r463275699
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File path: python/pyspark/sql/dataframe.py
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@@ -674,7 +674,7 @@ def cache(self):
.. note:: The default storage level has changed to `MEMORY_AND_DISK`
to match Scala in 2.0.
"""
self.is_cached = True
- self._jdf.cache()
+ self.persist(StorageLevel.MEMORY_AND_DISK)
Review comment:
Yes but that's the desired level, no? I understand there is a subtle
difference between the meaning of that in Scala and Python, but, would that be
the difference you are trying to fix here?
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