Connecting to an external RDBMS (MySQL) using scala in CDSW

[#1]

I have been playing quite a bit with CDSW lately. Here is a quick article on how to setup a CDSW project in scala connecting to an external RDBMS

Step 1: Create a new CDSW Project

Using the CDSW UI, create a new Scala Project:

Step 2: Reference the external Jar in your spark-defaults.conf

Open your project, and edit your spark-defaults.conf to add an external jar:

spark.jars=http://central.maven.org/maven2/mysql/mysql-connector-java/5.1.6/mysql-connector-java-5.1.6.jar

Step 3: Create a simple Scala file to connect to the DB

Create a new file and add this code in it:

val sqlContext = new org.apache.spark.sql.SQLContext(sc)

val df = sqlContext.read.format("jdbc").option("url", "jdbc:mysql://[YOUR_SERVER_IP]:3306/[YOUR_DB]").option("driver", "com.mysql.jdbc.Driver").option("dbtable", "[YOUR_TABLE]").option("user", "[YOUR_USER]").option("password", "[YOUR_PWD]").load()

df.show()

Step 4: Run your application

Launch a session and run your code: