AMBARI-9033. Kerberos wizard: MapReduce2 service check (wordcount job) fails. (jaimin)

ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/kerberos.json

@@ -73,11 +73,13 @@
               }
             }
           ],
-          "configurations": {
-            "yarn-site": {
-              "yarn.nodemanager.container-executor.class": "org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor"
+          "configurations": [
+            {
+              "yarn-site": {
+                "yarn.nodemanager.container-executor.class": "org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor"
+              }
             }
-          }
+          ]
         },
         {
           "name": "RESOURCEMANAGER",

ambari-web/app/data/HDP2.2/yarn_properties.js

@@ -31,6 +31,7 @@ var yarnPropsToCategory = {
 
   'Isolation': [
     'yarn.nodemanager.linux-container-executor.group',
+    'yarn.nodemanager.container-executor.class',
     'yarn.nodemanager.linux-container-executor.resources-handler.class',
     'yarn.nodemanager.linux-container-executor.cgroups.hierarchy',
     'yarn.nodemanager.linux-container-executor.cgroups.mount',