maintain log

Signed-off-by: varun-edachali-dbx <varun.edachali@databricks.com>

Author: varun-edachali-dbx

src/databricks/sql/backend/thrift_backend.py

@@ -915,7 +915,7 @@ def get_query_state(self, command_id: CommandId) -> CommandState:
         self._check_command_not_in_error_or_closed_state(thrift_handle, poll_resp)
         state = CommandState.from_thrift_state(operation_state)
         if state is None:
-            raise ValueError(f"Invalid operation state: {operation_state}")
+            raise ValueError(f"Unknown command state: {operation_state}")
         return state
 
     @staticmethod