Github user sun-rui commented on the pull request:
https://github.com/apache/spark/pull/8240#issuecomment-132131289
Yes, DataFrame API has lapply and lapplyPartition, but actually there are
RDD-like API ,and its implementation is based on the corresponding RDD API
after converting the DataFrame into an RDD. The RDD-like API of DataFrame and
RDD API are both hidden now.
UDF of DataFrame API is to be supported. Does that meet your requirement?
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