Hyukjin Kwon created SPARK-17967:

             Summary: Support for list or other types as an option for 
                 Key: SPARK-17967
                 URL: https://issues.apache.org/jira/browse/SPARK-17967
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.0.1, 2.0.0
            Reporter: Hyukjin Kwon

This was discussed in SPARK-17878

For other datasources, it seems okay with string/long/boolean/double value as 
an option but it seems it is not enough for the datasource such as CSV. As it 
is an interface for other external datasources, I guess it'd affect several 
ones out there.

I took a look a first but it seems it'd be difficult to support this (need to 
change a lot).

One suggestion is support this as a JSON array.

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