diff --git a/python/orca/src/bigdl/orca/ray/raycontext.py b/python/orca/src/bigdl/orca/ray/raycontext.py
index ac8f4f5a4e9..d949ef86ac2 100755
--- a/python/orca/src/bigdl/orca/ray/raycontext.py
+++ b/python/orca/src/bigdl/orca/ray/raycontext.py
@@ -622,7 +622,6 @@ def _start_driver(self, num_cores, redis_address):
         ray.shutdown()
         init_params = dict(
             address=redis_address,
-            namespace="az",
             _redis_password=self.ray_service.password,
             _node_ip_address=node_ip
         )