diff --git a/cpp/src/ray/util/process_helper.cc b/cpp/src/ray/util/process_helper.cc
index 3ee6a2c34..6511b5b8b 100644
--- a/cpp/src/ray/util/process_helper.cc
+++ b/cpp/src/ray/util/process_helper.cc
@@ -70,7 +70,12 @@ void ProcessHelper::RayStart(std::shared_ptr<RayConfig> config,
   options.store_socket = store_socket;
   options.raylet_socket = raylet_socket;
   if (options.worker_type == WorkerType::DRIVER) {
-    options.job_id = JobID::FromInt(0);
+    /// TODO(Guyang Song): Get next job id from core worker by GCS client.
+    /// Random a number to avoid repeated job ids.
+    /// The repeated job ids will lead to task hang when driver connects to a existing
+    /// cluster more than once.
+    std::srand(std::time(nullptr));
+    options.job_id = JobID::FromInt(std::rand());
   }
   options.gcs_options = gcs_options;
   options.enable_logging = true;