diff --git a/client/src/main/java/org/apache/rocketmq/client/trace/AsyncTraceDispatcher.java b/client/src/main/java/org/apache/rocketmq/client/trace/AsyncTraceDispatcher.java
index ca3bcfa261..34af0fbe90 100644
--- a/client/src/main/java/org/apache/rocketmq/client/trace/AsyncTraceDispatcher.java
+++ b/client/src/main/java/org/apache/rocketmq/client/trace/AsyncTraceDispatcher.java
@@ -87,12 +87,12 @@ public AsyncTraceDispatcher(String traceTopicName, RPCHook rpcHook) {
         } else {
             this.traceTopicName = MixAll.RMQ_SYS_TRACE_TOPIC;
         }
-        this.traceExecutor = new ThreadPoolExecutor(//
-            10, //
-            20, //
-            1000 * 60, //
-            TimeUnit.MILLISECONDS, //
-            this.appenderQueue, //
+        this.traceExecutor = new ThreadPoolExecutor(
+            10,
+            20,
+            1000 * 60,
+            TimeUnit.MILLISECONDS,
+            this.appenderQueue,
             new ThreadFactoryImpl("MQTraceSendThread_"));
         traceProducer = getAndCreateTraceProducer(rpcHook);
     }
@@ -133,6 +133,7 @@ public void setHostConsumer(DefaultMQPushConsumerImpl hostConsumer) {
         this.hostConsumer = hostConsumer;
     }
 
+    @Override
     public void start(String nameSrvAddr, AccessChannel accessChannel) throws MQClientException {
         if (isStarted.compareAndSet(false, true)) {
             traceProducer.setNamesrvAddr(nameSrvAddr);