I dont think there is any additional benefit besides developers have more control over data with high level API (Dataframe/ Dataset) than low level (RDD), and they dont need to worry about performance as it is well optimized/ managed by high level API by its own.

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P.S. - I do think my answer does not qualify as a formal answer. I earlier wanted to add it as comment only but unable to do so because I am yet to earn privilege of commenting.. :)

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