Configuring a Connection
After Installing the Connector you can connect and create a Data Source for data in Spark SQL.
Setting Up a Data Source
Complete the following steps to connect to the data:
- Under Connect | To a Server, click More....
- Select the data source called Spark SQL by CData.
- Enter the information required for the connection.
- Click Sign In.
- If necessary, select a Database and Schema to discover what tables and views are available.
Using the Connection Builder
The connector makes the most common connection properties available directly in Tableau. However, it can be difficult to use if you need to use more advanced settings or need to troubleshoot connection issues. The connector includes a separate connection builder that allows you to create and test connections outside of Tableau.
There are two ways to access the connection builder:
- On Windows, use a shortcut called Connection Builder in the Start menu, under the CData Tableau Connector for Spark SQL folder.
- You can also start the connection builder by going to the driver install directory and running the .jar file in the lib directory.
In the connection builder, you can set values for connection properties and click Test Connection to validate that they work. You can also use the Copy to Clipboard button to save the connection string. This connection string can be given to the Connection String option included in the connector connection window in Tableau.
Connecting to Spark SQL
Specify the following to establish a connection with Spark SQL:
- Server: The host name or IP address of the server hosting SparkSQL.
- Port: The port for the connection to the SparkSQL instance.
- TransportMode: The transport mode to use to communicate with the SparkSQL server. Accepted entries are BINARY and HTTP. BINARY is selected by default.
Securing Spark SQL Connections
To enable TLS/SSL in the connector, set UseSSL to True.
Authenticating to Spark SQL
The service may be authenticated to using the PLAIN, LDAP, NOSASL, KERBEROS auth schemes.
PLAIN
To authenticate with PLAIN, set the following connection properties:
- AuthScheme: PLAIN.
- User: The user to login as.
- Password: The password of the user.
LDAP
To authenticate with LDAP, set the following connection properties:
- AuthScheme: LDAP.
- User: The user to login as.
- Password: The password of the user.
NOSASL
When using NOSASL, no authentication is performed. Set the following connection properties:
- AuthScheme: NOSASL.
Kerberos
For details on how to authenticate with Kerberos, see Using Kerberos.
Next Step
See Using the Connector to create data visualizations.