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Example Maven Project for Scala Spark 2 Application

Introduction

This archive contains an example Maven project for Scala Spark 2 application.

Details

The pom.xml contains example dependencies for : -

• Spark
• SLF4J
• LOG4J (acts as logging implementation for SLF4J)
• grizzled-slf4 a Scala specific wrapper for SLF4J.
• typesafe for config.
• scalatest for testing.

Note that Scala itself is just listed as another dependency which means a global installation of Scala is not required. The pom.xml builds an uber-jar containing all the dependencies by default (including Scala jars).

The pom also includes two exec goals: -

• exec:exec@run-local - run the code using local spark instance.
• exec:exec@run-yarn - run the code on a remote yarn cluster. In order for this to work the hive-site.xml, core-site.xml and yarn-site.xml configuration files from the remote cluster must be copied into the spark-remote/conf directory.

Reference

Maven for scala link