Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/20068#discussion_r158593580 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVOptions.scala --- @@ -152,7 +152,7 @@ class CSVOptions( writerSettings.setIgnoreLeadingWhitespaces(ignoreLeadingWhiteSpaceFlagInWrite) writerSettings.setIgnoreTrailingWhitespaces(ignoreTrailingWhiteSpaceFlagInWrite) writerSettings.setNullValue(nullValue) - writerSettings.setEmptyValue(nullValue) + writerSettings.setEmptyValue("") --- End diff -- Can we simply expose this as an option and keep the previous behaviour if this option is not set explicitly by the user?
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