Hyukjin Kwon commented on SPARK-17967:

I am leaving SPARK-17878 as a related one but it does not mean this one blocks 
that JIRA.

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