diff --git a/internal/util/rocksmq/client/rocksmq/client_impl.go b/internal/util/rocksmq/client/rocksmq/client_impl.go
index f798625c3b..5318bcf95d 100644
--- a/internal/util/rocksmq/client/rocksmq/client_impl.go
+++ b/internal/util/rocksmq/client/rocksmq/client_impl.go
@@ -157,6 +157,7 @@ func (c *client) consume(consumer *consumer) {
 	}
 }
 
+// Close close the channel to notify rocksmq to stop operation and close rocksmq server
 func (c *client) Close() {
 	// TODO(yukun): Should call server.close() here?
 	c.closeOnce.Do(func() {