Update MasterSchedulerService.java (#3226)

dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/master/runner/MasterSchedulerService.java

@@ -46,7 +46,7 @@ import java.util.concurrent.TimeUnit;
 public class MasterSchedulerService extends Thread {
 
     /**
-     * logger of MasterSchedulerThread
+     * logger of MasterSchedulerService
      */
     private static final Logger logger = LoggerFactory.getLogger(MasterSchedulerService.class);
 
@@ -80,7 +80,7 @@ public class MasterSchedulerService extends Thread {
 
 
     /**
-     * constructor of MasterSchedulerThread
+     * constructor of MasterSchedulerService
      */
     @PostConstruct
     public void init(){
@@ -91,7 +91,7 @@ public class MasterSchedulerService extends Thread {
 
     @Override
     public void start(){
-        super.setName("MasterSchedulerThread");
+        super.setName("MasterSchedulerService");
         super.start();
     }
 
@@ -109,7 +109,7 @@ public class MasterSchedulerService extends Thread {
     }
 
     /**
-     * run of MasterSchedulerThread
+     * run of MasterSchedulerService
      */
     @Override
     public void run() {