Github user marmbrus commented on the pull request:
https://github.com/apache/spark/pull/194#issuecomment-38503577
Hi @haosdent,
As patrick said, I think using a Schema RDD as the input would simplify
this quite a bit and avoid the need to define your own custom column mapping.
Schema RDDs already have named columns and datatypes. Let me know if you have
any questions about how you could use this functionality.
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