Creating a JDBC Data Source

You can create a JDBC data source to connect from your Java application, based on CData JDBC Driver for HDFS.

Follow these steps:

1. Add the driver JAR file to the classpath. The JAR file is located in the installation directory's lib subfolder. Ensure that the .lic file is located in the same folder as the JAR file.
2. Provide the driver class. For example:
   

   cdata.jdbc.hdfs.HDFSDriver

3. Provide the JDBC URL. For example:
   

   jdbc:hdfs:Host=sandbox-hdp.hortonworks.com;Port=9870;Path=/user/root;

   Or, if there is a conflict in your application between drivers using the same URL format, use this form to ensure that you are using the CData driver:
   

   jdbc:cdata:hdfs:Host=sandbox-hdp.hortonworks.com;Port=9870;Path=/user/root;

   Ensure that the URL starts with either jdbc:hdfs: or jdbc:cdata:hdfs:. The URL can include any of the connection properties in name-value pairs separated with semicolons.

Connecting to HDFS

In order to connect, 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: 9870
• UseSSL: (Optional) Set this value to 'True', to negotiate TLS/SSL connections to the HDFS server. Default: 'False'.

Authenticating to HDFS

There are two authentication methods available for connecting to the HDFS data source, Anonymous Authentication and Negotiate (Kerberos) Authentication.

Anonymous Authentication

In some situations, HDFS may be connected to without any authentication connection properties. To do so, set the AuthScheme to None (default).

Kerberos

When authentication credentials are required, you can use Kerberos. See Using Kerberos for details on how to authenticate with Kerberos.