diff --git a/dlrover/python/common/constants.py b/dlrover/python/common/constants.py
index f6cd2cf84..3841aba74 100644
--- a/dlrover/python/common/constants.py
+++ b/dlrover/python/common/constants.py
@@ -212,6 +212,7 @@ class NodeEnv(object):
     RELAUNCHED_POD = "RELAUNCHED_POD"
     DLROVER_MASTER_ADDR = "DLROVER_MASTER_ADDR"
     GRPC_ENABLE_FORK = "GRPC_ENABLE_FORK_SUPPORT"
+    GRPC_POLL_STRATEGY = "GRPC_POLL_STRATEGY"
     POD_NAME = "POD_NAME"
     MONITOR_ENABLED = "MONITOR_ENABLED"
     JOB_NAME = "ELASTIC_JOB_NAME"
diff --git a/dlrover/python/elastic_agent/master_client.py b/dlrover/python/elastic_agent/master_client.py
index e646da113..2ad1bb5e3 100644
--- a/dlrover/python/elastic_agent/master_client.py
+++ b/dlrover/python/elastic_agent/master_client.py
@@ -29,7 +29,7 @@
 def retry_grpc_request(func):
     def wrapper(self, *args, **kwargs):
         retry = kwargs.get("retry", 10)
-        execption = None
+        exception = None
         for i in range(retry):
             try:
                 return func(self, *args, **kwargs)
@@ -39,11 +39,11 @@ def wrapper(self, *args, **kwargs):
                 logger.warning(
                     f"Retry {i} to {class_name}.{func_name} with failure",
                 )
-                execption = e
+                exception = e
                 time.sleep(5)
-        if execption:
-            logger.error(execption)
-            raise execption
+        if exception:
+            logger.error(exception)
+            raise exception
 
     return wrapper
 
diff --git a/dlrover/python/master/scaler/pod_scaler.py b/dlrover/python/master/scaler/pod_scaler.py
index 3c41da9f6..eb7897ab1 100644
--- a/dlrover/python/master/scaler/pod_scaler.py
+++ b/dlrover/python/master/scaler/pod_scaler.py
@@ -472,9 +472,12 @@ def _create_pod(self, node: Node):
         env.append(V1EnvVar(name=NodeEnv.JOB_NAME, value=self._job_name))
         env.append(V1EnvVar(name=NodeEnv.JOB_UID, value=self._job_uid))
 
-        # A deadlock can happen when pthread_atfork handler is running.
-        # For detail https://chromium.googlesource.com/external/github.com/grpc/grpc/+/refs/tags/v1.19.0-pre1/doc/fork_support.md  # noqa: E501
-        env.append(V1EnvVar(name=NodeEnv.GRPC_ENABLE_FORK, value="False"))
+        # At the cost of increased performance overhead, these provide greater
+        # stability in concurrent scenarios. (need grpcio version>=1.58)
+        # A history background: https://chromium.googlesource.com/external/
+        # github.com/grpc/grpc/+/refs/tags/v1.19.0-pre1/doc/fork_support.md
+        env.append(V1EnvVar(name=NodeEnv.GRPC_ENABLE_FORK, value="true"))
+        env.append(V1EnvVar(name=NodeEnv.GRPC_POLL_STRATEGY, value="poll"))
 
         worker_num = self._config_worker_num
         if worker_num == 0:
diff --git a/dlrover/python/tests/test_master_client.py b/dlrover/python/tests/test_master_client.py
index e24f296ff..8b6a38d12 100644
--- a/dlrover/python/tests/test_master_client.py
+++ b/dlrover/python/tests/test_master_client.py
@@ -35,6 +35,7 @@ def tearDown(self):
         self._master.stop()
 
     def test_open_channel(self):
+        self.assertEqual(self._master_client._timeout, 0.5)
         self.assertEqual(self._master_client._timeout, 0.5)
         self._master_client.close_channel()
         self._master_client.open_channel()