How to create spark session
How do I create a spark session?
The below is the code to create a spark session.
- val sparkSession = SparkSession. builder. master(“local”) . appName(“spark session example”) .
- val sparkSession = SparkSession. builder. master(“local”) . appName(“spark session example”) .
- val df = sparkSession. read. option(“header”,”true”).
How do I start a spark session in terminal?
Run Spark from the Spark Shell
- Navigate to the Spark-on-YARN installation directory, and insert your Spark version into the command. cd /opt/mapr/spark/spark-<version>/
- Issue the following command to run Spark from the Spark shell: On Spark 2.0.1 and later: ./bin/spark-shell –master yarn –deploy-mode client.
What is a spark session?
Spark session is a unified entry point of a spark application from Spark 2.0. It provides a way to interact with various spark’s functionality with a lesser number of constructs. Instead of having a spark context, hive context, SQL context, now all of it is encapsulated in a Spark session.