Feed Impala Data into FineReport

The CData JDBC Driver for Impala fully implements the JDBC standard and can provide Impala data connectivity to a wide variety of BI, reporting, and ETL tools and custom applications. In this article, we explain how to set Impala data as JDBC data source in FineReport and view Impala data as a table in the Report Designer.

Set Up a JDBC Data Source of Impala Data

Follow the instruction below to set Impala data as a FineReport database connection.

1. Copy the cdata.jdbc.apacheimpala.jar file from the lib folder in the CData JDBC Driver for Impala installation directory to the lib folder of the FineReport installation directory. You will need to copy the cdata.jdbc.apacheimpala.lic file as well.
2. From the Server tab, select Define Data Connection, click to add a new connection, and click JDBC.

Next we will set up the data connection definition in the window.

1. Database: Others
2. JDBC Driver: cdata.jdbc.apacheimpala.ApacheImpalaDriver
3. URL: A standard JDBC connection string using semicolon-separated connection properties.

   In order to connect to Apache Impala, set the Server, Port, and ProtocolVersion. You may optionally specify a default Database. To connect using alternative methods, such as NOSASL, LDAP, or Kerberos, refer to the online Help documentation.

   Built-in Connection String Designer

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

   java -jar cdata.jdbc.apacheimpala.jar

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

   When you configure the JDBC URL, you may also want to set the Max Rows connection property. This will limit the number of rows returned, which is especially helpful for improving performance when designing reports and visualizations.

   A typical JDBC URL is below:

   jdbc:apacheimpala:Server=127.0.0.1;Port=21050;
4. Click Connection pool attributes and set Test before getting connections to No.

Click Test connection to ensure you have configured the connection properly. With the connection to Impala set up, you can use it as FineReport data source.

Select Impala Data in the Report Designer.

1. Click to add a new template data set and select DB query to open the database query window.
2. Choose the JDBC connection that you created from the dropdown list.
3. The Impala entities will appear as tables on the left pane.
4. Write a SELECT statement for the Impala data tables and columns that you want to load.
5. Click preview and data is shown as table.

With these simple steps, Impala can be used as a JDBC data source in FineReport.