Trino is a distributed SQL query engine designed to query large datasets across multiple data sources. It allows users to perform interactive analytics on data where it lives, without needing to move it into a single storage system. Trino supports a wide variety of data sources, including Hadoop, AWS S3, MySQL, PostgreSQL, and many more.
When using Trino, you might encounter an AUTHENTICATION_FAILED error. This typically manifests as a failure to connect to the database, often accompanied by an error message indicating that the authentication process was unsuccessful.
The error message might look something like this:
Authentication failed: Invalid credentials provided for database access.
The AUTHENTICATION_FAILED error occurs when the credentials provided to access the database are incorrect. This could be due to a typo in the username or password, or because the credentials have been changed or revoked.
To resolve the AUTHENTICATION_FAILED error, follow these steps:
Ensure that the username and password you are using are correct. Double-check for any typos or case sensitivity issues. If you are unsure, contact your database administrator to confirm the credentials.
Update the Trino configuration file with the correct credentials. This file is typically located in the etc/catalog directory. Open the relevant catalog file (e.g., mysql.properties for MySQL) and update the following properties:
connector.name=mysql
connection-url=jdbc:mysql://your-database-url
connection-user=your-username
connection-password=your-password
After updating the credentials, restart the Trino server and test the connection to ensure that the issue is resolved. You can test the connection by running a simple query:
SELECT 1;
For more information on configuring Trino, refer to the official Trino documentation. If you continue to experience issues, consider reaching out to the Trino community for support.
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