[Bug][Refactor][issue-3157]use cas to avoid thread safe problem (#3158)

Co-authored-by: lgcareer <18610854716@163.com>

dolphinscheduler-remote/src/main/java/org/apache/dolphinscheduler/remote/NettyRemotingServer.java

@@ -119,11 +119,7 @@ public class NettyRemotingServer {
      *  server start
      */
     public void start(){
-
-        if(this.isStarted.get()){
-            return;
-        }
-
+        if (isStarted.compareAndSet(false, true)) {
             this.serverBootstrap
                     .group(this.bossGroup, this.workGroup)
                     .channel(NioServerSocketChannel.class)
@@ -155,8 +151,7 @@ public class NettyRemotingServer {
             } else {
                 throw new RuntimeException(String.format("NettyRemotingServer bind %s fail", serverConfig.getListenPort()));
             }
-        //
-        isStarted.compareAndSet(false, true);
+        }
     }
 
     /**