Github user HyukjinKwon commented on the pull request:
https://github.com/apache/spark/pull/13041#issuecomment-218363294
@anabranch First of all, I think currently (at least for me) it is really
confusing to deal with `null`, `""` and empty string in CSV. I am trying to
make this clear here and there (eg.https://github.com/apache/spark/pull/12921).
So, I hope we can hold off this at least that PR is merged.
Secondly, JSON data source would not support empty strings as fields. I
think we should clarify what we want for empty strings. For example, JSON data
sources simply ignores when it meets empty strings as far as I know but CSV
data sources currently throws NPE. Also, I think we need to decide if we are
going to support fields named empty strings or not for data sources.
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