January 2019
Beginner to intermediate
154 pages
4h 31m
English
Content preview from Apache Spark Quick Start Guide
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Creating DataFrames
To start with, we need a Spark session object, which will be used to convert RDDs into DataFrames, or to load data directly from a file into a DataFrame.
We are using the sales dataset in this chapter. You can get the dataset file, along with the code files for this chapter, from the following link: https://github.com/PacktPublishing/Apache-Spark-Quick-Start-Guide:
//Scalaimport org.apache.spark.sql.SparkSessionval spark = SparkSession.builder().appName("Spark DataFrame example").config("spark.some.config.option", "value").getOrCreate()// For implicit conversions like converting RDDs to DataFramesimport spark.implicits._//Javaimport org.apache.spark.sql.SparkSession;SparkSession spark = SparkSession.builder().appName("Java ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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