Build HBase-Connected Dashboards in Redash

Redash lets you connect and query your data sources, build dashboards to visualize data and share them with your company. When paired with CData Connect Server, you get instant, cloud-to-cloud access to HBase data for visualizations, dashboards, and more. This article shows how to create a virtual database for HBase and build visualizations from HBase data in Redash.

CData Connect Server provides a pure SQL Server interface for HBase, allowing you to easily build reports from live HBase data in Redash — without replicating the data to a natively supported database. As you build visualizations, Redash generates SQL queries to gather data. Using optimized data processing out of the box, CData Connect Server pushes all supported SQL operations (filters, JOINs, etc) directly to HBase, leveraging server-side processing to quickly return the requested HBase data.

Create a Virtual SQL Server Database for HBase Data

CData Connect Server uses a straightforward, point-and-click interface to connect to data sources and generate APIs.

1. Login to Connect Server and click Connections.
2. Select "HBase" from Available Data Sources.
3. Enter the necessary authentication properties to connect to HBase.

   Set the Port and Server to connect to Apache HBase.

4. Click Save Changes
5. Click Privileges -> Add and add the new user (or an existing user) with the appropriate permissions.

With the virtual database created, you are ready to connect to HBase data from Redash.

Visualize HBase Data in Redash

The steps below outline creating a new data source in Redash based on the virtual HBase database in Connect Server and building a simple visualization from the data.

Create a New Data Source

1. Log into Redash, click on your profile and click "Data Sources"
2. Click the " New Data Source" button
3. Select "Microsoft SQL Server" as the Data Source Type
4. On the configuration tab, set the following properties:
   • Name: Name the data source (e.g. HBase (CData Connect))
   • Host: The full URL to your CData Connect instance (e.g. https://connect_server_url)
   • Port: The port of the CData Connect SQL Server endpoint (e.g. 1433)
   • User: A CData Connect user
   • Password: The password for the above user
   • Database name: The name of the virtual database for HBase (e.g. ApacheHBase1)
   • Click the checkbox to Use SSQL
5. Click Create
6. Click the "Test Connection" button to ensure you have configured the connection properly

With the new Data Source created, we are ready to visualize our HBase data.

Create a HBase Data Visualization

1. Click Create -> New Query
2. Select the newly created Data Source (you can explore the data structure in the New Query wizard)
3. Write a SQL statement to retrieve the data, for example:
   SELECT SUM(CustomerName), Price FROM Customers GROUP BY Price
4. Click the "Execute" button to load HBase data into Redash via CData Connect
5. Use the Visualization Editor to create and analyze graphs from HBase data
6. You can schedule the query to refresh and update the visualization periodically

SQL Access to HBase Data from Cloud Applications

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