Github user ssuchter commented on the issue: https://github.com/apache/spark/pull/21672 So this changes behavior, I think. In the old behavior, if the args were ['a', 'b'] then you'd get a single arg of ['a b'] passed through, and with this you'd get ['a', 'b']. This new behavior seems better, I'm just trying a bit to remember why we had the old behavior.
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