@wallacei  Error: sqlline-thin.py is configured to use Protobuf serialization for communication with PQS. Protobuf relies on pre-defined class names to parse responses from the server. The error message suggests that sqlline-thin.py is unable to find the class name for a specific response message from PQS. =================== Check PQS Configuration: Ensure PQS is configured to use Protobuf serialization as well. This might involve checking configuration files or options during PQS startup. Verify Library Versions: Make sure the versions of sqlline-thin.py and the Phoenix libraries (including PQS) are compatible. Inconsistent versions might lead to class name mismatch issues. You can check the documentation for sqlline-thin.py for specific version compatibility information. Consider sqlline.py (Regular JDBC): As your sqlline.py script works with regular JDBC, it suggests the basic Phoenix connection is functional. You might consider using sqlline.py for now while troubleshooting the Protobuf issue with sqlline-thin.py. Alternative Tools: If sqlline-thin.py continues to cause problems, explore alternative tools for connecting to Phoenix like the Phoenix JDBC thin client or a GUI client like Squirrel SQL. Double-check the connection URL in sqlline-thin.py. Ensure it points to the correct PQS endpoint (http://localhost:8765 by default). ... View more

Do you have debug turned on in the hue.ini in order to try to get the error trace? ... View more