Prepare for a release with telemetry on by default

Author: samikshya-db

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Release History
 
+# 4.2.1 (2025-11-20)
+
+- Change default use_hybrid_disposition to False by @samikshya-db in https://github.com/databricks/databricks-sql-python/pull/714
+- Circuit breaker changes using pybreaker by @nikhilsuri-db in https://github.com/databricks/databricks-sql-python/pull/705
+- perf: Optimize telemetry latency logging to reduce overhead by @samikshya-db in https://github.com/databricks/databricks-sql-python/pull/715
+- basic e2e test for force telemetry verification by @nikhilsuri-db in https://github.com/databricks/databricks-sql-python/pull/708
+- Telemetry is ON by default to track connection stats. (Note : This strictly excludes PII, query text, and results) by @samikshya-db in https://github.com/databricks/databricks-sql-python/pull/717
+
 # 4.2.1 (2025-11-20)
 - Ignore transactions by default (databricks/databricks-sql-python#711 by @jayantsing-db)
 

README.md

@@ -1,3 +1,4 @@
+
 # Databricks SQL Connector for Python
 
 [![PyPI](https://img.shields.io/pypi/v/databricks-sql-connector?style=flat-square)](https://pypi.org/project/databricks-sql-connector/)
@@ -13,7 +14,7 @@ You are welcome to file an issue here for general use cases. You can also contac
 
 ## Requirements
 
-Python 3.8 or above is required.
+Python 3.9 or above is required.
 
 ## Documentation
 

src/databricks/sql/auth/common.py

@@ -51,7 +51,7 @@ def __init__(
         pool_connections: Optional[int] = None,
         pool_maxsize: Optional[int] = None,
         user_agent: Optional[str] = None,
-        telemetry_circuit_breaker_enabled: Optional[bool] = None,
+        telemetry_circuit_breaker_enabled: Optional[bool] = True,
     ):
         self.hostname = hostname
         self.access_token = access_token

src/databricks/sql/client.py

@@ -328,7 +328,7 @@ def read(self) -> Optional[OAuthToken]:
         self.ignore_transactions = ignore_transactions
 
         self.force_enable_telemetry = kwargs.get("force_enable_telemetry", False)
-        self.enable_telemetry = kwargs.get("enable_telemetry", False)
+        self.enable_telemetry = kwargs.get("enable_telemetry", True)
         self.telemetry_enabled = TelemetryHelper.is_telemetry_enabled(self)
 
         TelemetryClientFactory.initialize_telemetry_client(