How to work with JobNimbus Data in Apache Spark using SQL

Apache Spark is a fast and general engine for large-scale data processing. When paired with the CData JDBC Driver for JobNimbus, Spark can work with live JobNimbus data. This article describes how to connect to and query JobNimbus data from a Spark shell.

The CData JDBC Driver offers unmatched performance for interacting with live JobNimbus data due to optimized data processing built into the driver. When you issue complex SQL queries to JobNimbus, the driver pushes supported SQL operations, like filters and aggregations, directly to JobNimbus and utilizes the embedded SQL engine to process unsupported operations (often SQL functions and JOIN operations) client-side. With built-in dynamic metadata querying, you can work with and analyze JobNimbus data using native data types.

Install the CData JDBC Driver for JobNimbus

Download the CData JDBC Driver for JobNimbus installer, unzip the package, and run the JAR file to install the driver.

Start a Spark Shell and Connect to JobNimbus Data

1. Open a terminal and start the Spark shell with the CData JDBC Driver for JobNimbus JAR file as the jars parameter:

   $ spark-shell --jars /CData/CData JDBC Driver for JobNimbus/lib/cdata.jdbc.api.jar
   

2. With the shell running, you can connect to JobNimbus with a JDBC URL and use the SQL Context load() function to read a table.

   Using API Key Authentication

   JobNimbus uses API key authentication to control access to the API. To obtain a JobNimbus API key:

   1. Log in to your JobNimbus account.
   2. Navigate to Settings > Integrations > API.
   3. Generate or copy your existing API key from this page.

   After obtaining your API key, set the following connection properties:

   • AuthScheme: Set this to APIKey.
   Set the following in the ProfileSettings connection property:
   • APIKey: Set this to your JobNimbus API key.

   Example Connection String

   Profile=C:\profiles\JobNimbus.apip;AuthScheme=APIKey;ProfileSettings='APIKey=my_api_key';
   

   Built-in Connection String Designer

   For assistance in constructing the JDBC URL, use the connection string designer built into the JobNimbus JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

   java -jar cdata.jdbc.api.jar
   

   Fill in the connection properties and copy the connection string to the clipboard.

   

   Configure the connection to JobNimbus, using the connection string generated above.

   scala> val api_df = spark.sqlContext.read.format("jdbc").option("url", "jdbc:api:Profile=C:\profiles\JobNimbus.apip;AuthScheme=APIKey;ProfileSettings='APIKey=my_api_key';").option("dbtable","AccountUsers").option("driver","cdata.jdbc.api.APIDriver").load()
   

3. Once you connect and the data is loaded you will see the table schema displayed.

4. Register the JobNimbus data as a temporary table:

   scala> api_df.registerTable("accountusers")

5. Perform custom SQL queries against the Data using commands like the one below:

   scala> api_df.sqlContext.sql("SELECT ,  FROM AccountUsers WHERE  = ").collect.foreach(println)

   You will see the results displayed in the console, similar to the following:

   

Using the CData JDBC Driver for JobNimbus in Apache Spark, you are able to perform fast and complex analytics on JobNimbus data, combining the power and utility of Spark with your data. Download a free, 30 day trial of any of the hundreds of CData JDBC Drivers and get started today.