How to read write CSV file into spark DataFrame || DataEdge Systems Inc
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Spark Read CSV file into DataFrame
Spark SQL provides spark.read.csv("path") to read a CSV file into Spark DataFrame and dataframe.write.csv("path") to save or write to the CSV file. In this tutorial, you will learn how to read a single file, multiple files, all files from a local directory into DataFrame, and applying some transformations finally writing DataFrame back to CSV file using Scala example.