diff --git a/dolphinscheduler-api/src/test/java/org/apache/dolphinscheduler/api/service/LoggerServiceTest.java b/dolphinscheduler-api/src/test/java/org/apache/dolphinscheduler/api/service/LoggerServiceTest.java
index 31034e5993c52e193b6b3e975df35d194eec609f..c6ab6f8e74af580c9a2daac1d8f2cc93290330b5 100644
--- a/dolphinscheduler-api/src/test/java/org/apache/dolphinscheduler/api/service/LoggerServiceTest.java
+++ b/dolphinscheduler-api/src/test/java/org/apache/dolphinscheduler/api/service/LoggerServiceTest.java
@@ -89,6 +89,8 @@ public class LoggerServiceTest {
         //success
         taskInstance.setHost("127.0.0.1");
         taskInstance.setLogPath("/temp/log");
+        //if use @RunWith(PowerMockRunner.class) mock object,sonarcloud will not calculate the coverage,
+        // so no assert will be added here
         loggerService.getLogBytes(1);
 
     }