Databricks Connect - driver error

[Bagger]

Hi 

We are experiencing instability when executing queries using Databricks Connect.

Sometimes we are unable to receive the full result set without encountering an error with the message "Driver is up but is not responsive..."

When we run the same query directly through the Databricks UI, the problem does not persist. 

Does anyone have an idea to what the problem is and what a potential solution might be?

[Kaniz]

Hi @Bagger, -

Error message: "Driver is up but is not responsive..."

- Potential causes:
   - Unreachable Cluster
       - Check workspace instance name and cluster ID
       - Verify environment variables on the local development machine
   - Python Version Mismatch
       - Set the PYSPARK_PYTHON environment variable to ensure the correct Python version
   - Conflicting PySpark Installations
       - Uninstall PySpark and Databricks Connect
       - Reinstall Databricks Connect
   - Conflicting or Missing PATH entry for binaries
       - Ensure Databricks Connect binaries take precedence or remove previously installed ones

- For more details, refer to Databricks Connect troubleshooting guide in the provided sources.

•  Docs: databricks-connect-ref

[Bagger]

@Kaniz thank you for your answer.. Our issue is that we can actually connect to the cluster and receive data, but sporadically the error occurs. The potential causes (and solutions) you list does fit our issue.