Affects Version/s: None
Fix Version/s: None
The OpenCSVSerde produces a CSV with all its columns quoted
no matter of they type or if the string columns contain a separator or not.
The problem is some readers (such postgresql) are not compatible with
such CSV, in particular when bulk loading them thought COPY statement.
I propose a new CsvSerde, based on a Univocity Parser (wich is used by Apache Spark)
that has been described a 2 times faster thant OpenCSV. https://github.com/uniVocity/csv-parsers-comparison . This new CsvSerde whould only quote columns when needed.