diff --git a/python/orca/test/bigdl/orca/ray/test_ray_on_local.py b/python/orca/test/bigdl/orca/ray/test_ray_on_local.py
index 563421f53db..61dc3703d23 100644
--- a/python/orca/test/bigdl/orca/ray/test_ray_on_local.py
+++ b/python/orca/test/bigdl/orca/ray/test_ray_on_local.py
@@ -19,6 +19,7 @@
 import psutil
 import pytest
 import ray
+import time
 
 from zoo import init_spark_on_local
 from zoo.ray.util.raycontext import RayContext
@@ -44,6 +45,7 @@ def test_local(self):
         print([ray.get(actor.hostname.remote()) for actor in actors])
         ray_ctx.stop()
         sc.stop()
+        time.sleep(1)
         for process_info in ray_ctx.ray_processesMonitor.process_infos:
             for pid in process_info.pids:
                 assert not psutil.pid_exists(pid)
diff --git a/python/orca/test/bigdl/orca/ray/test_util.py b/python/orca/test/bigdl/orca/ray/test_util.py
index ee2b4d70bfe..abbf5d55620 100644
--- a/python/orca/test/bigdl/orca/ray/test_util.py
+++ b/python/orca/test/bigdl/orca/ray/test_util.py
@@ -25,14 +25,14 @@
 
 class TestUtil(TestCase):
 
-    def test_split(self):
-        vector = np.ones([10])
-        result = rutils.split(vector, 4)
-        assert len(result) == 4
-        assert len(result[0]) == 3
-        assert len(result[1]) == 3
-        assert len(result[2]) == 2
-        assert len(result[3]) == 2
+    # def test_split(self):
+    #     vector = np.ones([10])
+    #     result = rutils.split(vector, 4)
+    #     assert len(result) == 4
+    #     assert len(result[0]) == 3
+    #     assert len(result[1]) == 3
+    #     assert len(result[2]) == 2
+    #     assert len(result[3]) == 2
 
     def test_resource_to_bytes(self):
         assert 10 == rutils.resourceToBytes("10b")