Github user NarineK commented on the pull request:
https://github.com/apache/spark/pull/8920#issuecomment-144623226
okay, I see. For columns we probably cannot add sort right now because the
dataframe api doesn't have it.
For my understanding arrange isn't doing sorting for string column names.
we can add that decreasing attribute to arrange like in your example,
Felix. But then it will be useless for Column objects ???
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