AMBARI-5159. Storm config page not available(ui.childopts property missing post-installation). (jaimin)

ambari-web/app/controllers/main/service/info/configs.js

@@ -380,7 +380,7 @@ App.MainServiceInfoConfigsController = Em.Controller.extend({
     this.checkForRestart(serviceConfig, restartData);
     if (serviceName || serviceConfig.serviceName === 'MISC') {
       //STEP 11: render configs and wrap each in ServiceConfigProperty object
-      this.loadComponentConfigs(allConfigs, serviceConfig, restartData);
+      this.loadComponentConfigs(allConfigs, serviceConfig, restartData, advancedConfigs);
       this.get('stepConfigs').pushObject(serviceConfig);
     }
     this.set('selectedService', this.get('stepConfigs').objectAt(0));
@@ -524,8 +524,9 @@ App.MainServiceInfoConfigsController = Em.Controller.extend({
    * @param configs
    * @param componentConfig
    * @param restartData
+   * @param advancedConfigs
    */
-  loadComponentConfigs: function (configs, componentConfig, restartData) {
+  loadComponentConfigs: function (configs, componentConfig, restartData, advancedConfigs) {
 
     var localDB = this.getInfoForDefaults();
     var recommendedDefaults = {};
@@ -537,7 +538,14 @@ App.MainServiceInfoConfigsController = Em.Controller.extend({
         var d = defaultsProvider.getDefaults(localDB);
         defaults.push(d);
         for (var name in d) {
-          recommendedDefaults[name] = d[name];
+          var defaultValueFromStack = advancedConfigs.findProperty('name',name);
+          if (!!d[name]) {
+            recommendedDefaults[name] = d[name];
+          } else {
+           // If property default value is not declared on client, fetch it from stack definition
+           // If it's not declared with any valid value in both server stack and client, then js reference error is expected to be thrown
+            recommendedDefaults[name] = defaultValueFromStack.value
+          }
         }
       });
     }

ambari-web/app/utils/config.js

@@ -616,11 +616,16 @@ App.config = Em.Object.create({
         service.defaultsProviders.forEach(function (defaultsProvider) {
           var defaults = defaultsProvider.getDefaults(localDB);
           for (var name in defaults) {
-            recommendedDefaults[name] = defaults[name];
             var config = configsByService.findProperty('name', name);
-            if (config) {
+            if (!config) {
+              continue;
+            }
+            if (!!defaults[name]) {
+              recommendedDefaults[name] = defaults[name];
               config.set('value', defaults[name]);
               config.set('defaultValue', defaults[name]);
+            } else {
+              recommendedDefaults[name] = config.get('defaultValue');
             }
           }
         });

ambari-web/app/utils/configs/defaults_providers/storm_defaults_provider.js

@@ -40,10 +40,6 @@ App.STORMDefaultsProvider = App.DefaultsProvider.extend({
     if (!this.clusterDataIsValid()) {
       return configs;
     }
-    configs['drpc.childopts'] = '-Xmx768m';
-    //ui childopts value should be taken from stack
-    //configs['ui.childopts'] = '-Xmx768m';
-    configs['logviewer.childopts'] = '-Xmx128m';
     return configs;
   },