Fokko commented on issue #28238: [SPARK-23647][PYTHON][SQL][2.4] Adds more types for hint in pyspark URL: https://github.com/apache/spark/pull/28238#issuecomment-615590452 I know how tedious is it to cherry-pick back to maintenance versions. But this is really a bug. However, I should have provided more information. I'm not the only one that's running into this. For example, this StackOverflow: https://stackoverflow.com/questions/56242674/why-am-i-getting-an-exception-when-using-a-range-join-hint So the bug is with the Python API. Everything works in the SQL API:  But when doing exactly the same using the Python Dataframe API:  It requires.a string as an argument for the `.hint` API. However, this won't work:  It is described in the docs that it should be possible: https://docs.databricks.com/delta/join-performance/range-join.html#enable-range-join-using-a-range-join-hint
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