diff --git a/registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/KubernetesRegistry.java b/registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/KubernetesRegistry.java
index e9f957416..90ff2ccda 100644
--- a/registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/KubernetesRegistry.java
+++ b/registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/KubernetesRegistry.java
@@ -230,11 +230,9 @@ public void batchUnSubscribe(List<ConsumerConfig> configs) {
     public void destroy() {
         // unRegister provider
         providerInstances.forEach((k, v) -> unRegister(k));
-        providerInstances.clear();
 
         // unRegister consumer
         consumerListeners.forEach((k, v) -> unSubscribe(k));
-        consumerListeners.clear();
 
         // close kubernetes client
         kubernetesClient.close();
diff --git a/registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/util/KubernetesConfigUtils.java b/registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/util/KubernetesConfigUtils.java
index 32002fc41..3abc71b5f 100644
--- a/registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/util/KubernetesConfigUtils.java
+++ b/registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/util/KubernetesConfigUtils.java
@@ -65,6 +65,7 @@ public static Config buildKubernetesConfig(RegistryConfig registryConfig) {
 
     private static String buildMasterUrl(RegistryConfig registryConfig) {
         String address = registryConfig.getAddress();
+        // TODO maybe use Config property
         if (StringUtils.isNotBlank(address)) {
             return "http://" + address;
         }