Update. I have tried SQL Workbench/J and encountered exactly the same error(s) as with Dbeaver.

I have also tried JetBrains DataGrip and it worked flawlessly. Able to connect, browse the databases and query tables/views. https://docs.microsoft.com/en-us/azure/databricks/dev-tools/datagrip

1. Either the instructions for Dbeaver and SQL Workbench/J are missing something.
2. Latest Dbeaver and SQL Workbench/J have bugs or need updates in order to work with Databricks JDBC driver.