Merge Spark output CSV files with a single header

Question

I want to create a data processing pipeline in AWS to eventually use the processed data for Machine Learning.

I have a Scala script that takes raw data from S3, proc

Answer 1

 // Convert JavaRDD  to CSV and save as text file
        outputDataframe.write()
                .format("com.databricks.spark.csv")
                // Header => true, will enable to have header in each file
                .option("header", "true")

Please follow the link with Integration test on how to write a single header

http://bytepadding.com/big-data/spark/write-a-csv-text-file-from-spark/