Github user viirya commented on the issue: https://github.com/apache/spark/pull/19492 In fact I don't feel strong preference to support array of primitive types in `from_json`. The reason is that I think at most time, we will use json object instead of json array at top-level. Is it common to use json array to store primitive type of data like this? Seems to me it doesn't have more advantage than just a string with special delimiter such as "," or "|".
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