Query HDFS Data in MySQL Workbench

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The HDFS ODBC Driver is a powerful tool that allows you to connect with live data from HDFS, directly from any applications that support ODBC connectivity.

Access HDFS data like you would a database - read, write, and update HDFS HDFSData, etc. through a standard ODBC Driver interface.

Execute MySQL queries against live HDFS data from MySQL Workbench.

You can use the SQL Gateway from the ODBC Driver for HDFS to query HDFS data through a MySQL interface. Follow the procedure below to start the MySQL remoting service of the SQL Gateway and work with live HDFS data in MySQL Workbench.

Connect to HDFS Data

If you have not already done so, provide values for the required connection properties in the data source name (DSN). You can use the built-in Microsoft ODBC Data Source Administrator to configure the DSN. This is also the last step of the driver installation. See the "Getting Started" chapter in the help documentation for a guide to using the Microsoft ODBC Data Source Administrator to create and configure a DSN.

In order to authenticate, 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: 50070

Configure the SQL Gateway

See the SQL Gateway Overview to set up connectivity to HDFS data as a virtual MySQL database. You will configure a MySQL remoting service that listens for MySQL requests from clients. The service can be configured in the SQL Gateway UI.

Creating a MySQL Remoting Service in SQL Gateway (Salesforce is shown)

Query HDFS from MySQL Workbench

The steps below outline connecting to the virtual HDFS database created in the SQL Gateway from MySQL Workbench and issuing basic queries to work with live HDFS data.

Connect to HDFS through the SQL Gateway

  1. In MySQL Workbench, click to add a new MySQL connection.
  2. Name the connection (CData SQL Gateway for HDFS).
  3. Set the Hostname, Port, and Username parameters to connect to the SQL Gateway.
  4. Click Store in Vault to set and store the password.
  5. Click Test Connection to ensure the connection is configured properly and click OK.

Query HDFS Data

  1. Open the connection you just created (CData SQL Gateway for HDFS).
  2. Click File -> New Query Tab.
  3. Write a SQL query to retrieve HDFS data, like SELECT * FROM `CData HDFS Sys`.Files;

With access to live HDFS data from MySQL Workbench, you can easily query and update HDFS, just like you would a MySQL database. Get started now with a free, 30-day trial of the CData ODBC Driver for HDFS and the CData SQL Gateway.