Github user HyukjinKwon commented on the pull request: https://github.com/apache/spark/pull/12904#issuecomment-217605160 Here is what I think CSV datasource should handle `""`, empty string and `nullValue`. With the option, `nullValue` set to `"null"`, I think ```csv ,"","null" ``` should produce the records as below: ``` Row(null, "", null) ``` Would this make sense?
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