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From zml张明磊 <>
Subject How can I get the column data based on specific column name and then stored these data in array or list ?
Date Fri, 25 Dec 2015 07:33:12 GMT

       I am a new to Scala and Spark and trying to find relative API in DataFrame to solve
my problem as title described. However, I just only find this API DataFrame.col(colName :
String) : Column which returns an object of Column. Not the content. If only DataFrame support
such API which like Column.toArray : Type is enough for me. But now, it doesn’t. How can
I do can achieve this function ?

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