Build Databricks Visualizations in Tableau Desktop

Tableau is a visual analytics platform transforming the way businesses use data to solve problems. When paired with CData Connect Cloud, you get instant, cloud-to-cloud access to Databricks data for visualizations, dashboards, and more. This article shows how to connect to Databricks and build visualizations from Databricks data in Tableau.

Getting Started

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CData Connect Cloud provides a pure SQL Server, cloud-to-cloud interface for Databricks, allowing you to easily build visualizations from live Databricks data in Tableau without installing connectors. As you build visualizations, Tableau generates SQL queries to gather data. Using optimized data processing out of the box, CData Connect Cloud pushes all supported SQL operations (filters, JOINs, etc) directly to Databricks, leveraging server-side processing to quickly return Databricks data.

Configure Databricks Connectivity for Tableau

Connectivity to Databricks from Tableau is made possible through CData Connect Cloud. To work with Databricks data from Tableau, we start by creating and configuring a Databricks connection.

1. Log into Connect Cloud, click Connections and click Add Connection
2. Select "Databricks" from the Add Connection panel
3. Enter the necessary authentication properties to connect to Databricks.

   To connect to a Databricks cluster, set the properties as described below.

   Note: The needed values can be found in your Databricks instance by navigating to Clusters, and selecting the desired cluster, and selecting the JDBC/ODBC tab under Advanced Options.

   • Server: Set to the Server Hostname of your Databricks cluster.
   • HTTPPath: Set to the HTTP Path of your Databricks cluster.
   • Token: Set to your personal access token (this value can be obtained by navigating to the User Settings page of your Databricks instance and selecting the Access Tokens tab).
4. Click Create & Test
5. Navigate to the Permissions tab in the Add Databricks Connection page and update the User-based permissions.

Add a Personal Access Token

If you are connecting from a service, application, platform, or framework that does not support OAuth authentication, you can create a Personal Access Token (PAT) to use for authentication. Best practices would dictate that you create a separate PAT for each service, to maintain granularity of access.

1. Click on your username at the top right of the Connect Cloud app and click User Profile.
2. On the User Profile page, scroll down to the Personal Access Tokens section and click Create PAT.
3. Give your PAT a name and click Create.
4. The personal access token is only visible at creation, so be sure to copy it and store it securely for future use.

With the connection configured, you are ready to connect to Databricks data from Tableau.

Visualize Live Databricks Data in Tableau

To establish a connection from Tableau Desktop to the CData Connect Cloud Virtual SQL Server API, follow these steps.

1. In Tableau Desktop, open a new book. Under To a Server, select More, then Microsoft SQL Server.
2. Enter your credentials:
   • Server: enter the Virtual SQL Server endpoint and port separated by a comma: tds.cdata.com,14333
   • Database: enter the Connection Name of the CData Connect Cloud data source you want to connect to (for example, Databricks1).
   • Authentication: select Use a specific username and password.
   • Username: enter your CData Connect Cloud username. This is displayed in the top-right corner of the CData Connect Cloud interface. For example, [email protected].
   • Password: enter the PAT you previously generated.
   • Require SSL: leave this selected.
3. Click Sign In.
4. Select the Database (Connect Cloud connection) you wish to work with and opt for a Live or Extract Connection type.
5. Select the table(s) you wish to visualize. If you select multiple tables, define the relationship between the tables using the appropriate columns.
6. Select the fields to visualize.

Real-Time Access to Databricks Data from Data Applications

At this point, you have a direct, cloud-to-cloud connection to live Databricks data from your Tableau workbook. You can create new visualizations, build dashboards, and more. For more information on gaining live access to data from more than 100 SaaS, Big Data, and NoSQL sources from applications like Tableau, refer to our Connect Cloud page.