diff --git a/joyqueue-client/joyqueue-client-core/src/main/java/io/openmessaging/joyqueue/support/MessageAccessPointHolder.java b/joyqueue-client/joyqueue-client-core/src/main/java/io/openmessaging/joyqueue/support/MessageAccessPointHolder.java
index c8024fe30..2ef99f5fe 100644
--- a/joyqueue-client/joyqueue-client-core/src/main/java/io/openmessaging/joyqueue/support/MessageAccessPointHolder.java
+++ b/joyqueue-client/joyqueue-client-core/src/main/java/io/openmessaging/joyqueue/support/MessageAccessPointHolder.java
@@ -19,7 +19,7 @@
 
 /**
  * MessageAccessPointHolder
- *
+ *  
  * author: gaohaoxiang
  * date: 2019/5/14
  */
@@ -42,6 +42,7 @@ public void stopProducer() {
         maybeStop();
     }
 
+    /** start producer */
     public void startProducer() {
         producers++;
     }
@@ -61,4 +62,4 @@ protected void maybeStop() {
         }
         messageAccessPoint.stop();
     }
-}
\ No newline at end of file
+}