How to connect to HDFS Data from IntelliJ

The CData JDBC Driver for HDFS enables you to access HDFS as a JDBC data source, providing integration with rapid development tools in IDEs. This article shows how to use the data source configuration wizard to connect to HDFS data in IntelliJ.

Create a JBDC Data Source for HDFS

Follow the steps below to add the driver JAR and define connection properties required to connect to HDFS data.

1. In the Data Sources window, right-click and then click Add Data Source -> DB Data Source.

2. In the Data Source Properties dialog that appears, the following properties are required:

   • JDBC Driver Files: Click the button next to this menu to add the JDBC Driver file cdata.jdbc.hdfs.jar, located in the installation directory.
   • JDBC Driver Class: In this menu, select cdata.jdbc.hdfs.HDFSDriver from the list.

   • Database URL: Enter the connection URL in the JDBC URL property. The URL must start with jdbc:hdfs: and includes connection properties separated with semicolons.

     In order to authenticate, set the following connection properties:

     • Host: Set this value to the host of your HDFS installation.
     • Port: Set this value to the port of your HDFS installation. Default port: 50070

     Built-in Connection String Designer

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

     java -jar cdata.jdbc.hdfs.jar

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

     A typical JDBC URL is the following:

     jdbc:hdfs:Host=sandbox-hdp.hortonworks.com;Port=50070;Path=/user/root;User=root;

Edit and Save HDFS Data

To discover schema information, right-click the data source you just created and click Refresh Tables. To query a table, right-click it and then click Open Tables Editor.