YARN-6572. Fix CheckStyle.

Author: slfan1989

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/clientrm/RouterClientRMService.java

@@ -479,15 +479,10 @@ protected Map<String, RequestInterceptorChainWrapper> getPipelines() {
   @VisibleForTesting
   protected ClientRequestInterceptor createRequestInterceptorChain() {
     Configuration conf = getConfig();
-    try {
-      return RouterServerUtil.createRequestInterceptorChain(conf,
-              YarnConfiguration.ROUTER_CLIENTRM_INTERCEPTOR_CLASS_PIPELINE,
-              YarnConfiguration.DEFAULT_ROUTER_CLIENTRM_INTERCEPTOR_CLASS,
-              ClientRequestInterceptor.class);
-    } catch (YarnRuntimeException ex) {
-      throw new YarnRuntimeException("RequestInterceptor pipeline is not configured in the system.",
-          ex);
-    }
+    return RouterServerUtil.createRequestInterceptorChain(conf,
+        YarnConfiguration.ROUTER_CLIENTRM_INTERCEPTOR_CLASS_PIPELINE,
+        YarnConfiguration.DEFAULT_ROUTER_CLIENTRM_INTERCEPTOR_CLASS,
+        ClientRequestInterceptor.class);
   }
 
   /**

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/rmadmin/RouterRMAdminService.java

@@ -187,14 +187,10 @@ protected Map<String, RequestInterceptorChainWrapper> getPipelines() {
   @VisibleForTesting
   protected RMAdminRequestInterceptor createRequestInterceptorChain() {
     Configuration conf = getConfig();
-    try {
-      return RouterServerUtil.createRequestInterceptorChain(conf,
-          YarnConfiguration.ROUTER_RMADMIN_INTERCEPTOR_CLASS_PIPELINE,
-          YarnConfiguration.DEFAULT_ROUTER_RMADMIN_INTERCEPTOR_CLASS,
-          RMAdminRequestInterceptor.class);
-    } catch (YarnRuntimeException ex) {
-      throw new YarnRuntimeException("Create RequestInterceptor Chain error.", ex);
-    }
+    return RouterServerUtil.createRequestInterceptorChain(conf,
+        YarnConfiguration.ROUTER_RMADMIN_INTERCEPTOR_CLASS_PIPELINE,
+        YarnConfiguration.DEFAULT_ROUTER_RMADMIN_INTERCEPTOR_CLASS,
+        RMAdminRequestInterceptor.class);
   }
 
   /**

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/webapp/RouterWebServices.java

@@ -179,14 +179,10 @@ protected Map<String, RequestInterceptorChainWrapper> getPipelines() {
    */
   @VisibleForTesting
   protected RESTRequestInterceptor createRequestInterceptorChain() {
-    try {
-      return RouterServerUtil.createRequestInterceptorChain(conf,
-          YarnConfiguration.ROUTER_WEBAPP_INTERCEPTOR_CLASS_PIPELINE,
-          YarnConfiguration.DEFAULT_ROUTER_WEBAPP_INTERCEPTOR_CLASS,
-          RESTRequestInterceptor.class);
-    } catch (YarnRuntimeException ex) {
-      throw new YarnRuntimeException("Create RequestInterceptor Chain error.", ex);
-    }
+    return RouterServerUtil.createRequestInterceptorChain(conf,
+        YarnConfiguration.ROUTER_WEBAPP_INTERCEPTOR_CLASS_PIPELINE,
+        YarnConfiguration.DEFAULT_ROUTER_WEBAPP_INTERCEPTOR_CLASS,
+        RESTRequestInterceptor.class);
   }
 
   /**