AMBARI-15258. Make Hive Server Interactive component as hidden till the point "Turn on Interactive Query" from UI is turned ON. (jaimin)

ambari-server/src/main/resources/stacks/HDP/2.4/services/HIVE/configuration/llap-daemon-log4j.xml

@@ -0,0 +1,126 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
+<!--
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+-->
+
+<configuration supports_final="false" supports_adding_forbidden="true">
+  <property>
+  <name>content</name>
+  <description>Custom log4j.properties</description>
+  <value>
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+status = WARN
+name = LlapDaemonLog4j2
+packages = org.apache.hadoop.hive.ql.log
+
+# list of properties
+property.llap.daemon.log.level = WARN
+property.llap.daemon.root.logger = console
+property.llap.daemon.log.dir = .
+property.llap.daemon.log.file = llapdaemon.log
+property.llap.daemon.historylog.file = llapdaemon_history.log
+property.llap.daemon.log.maxfilesize = 256MB
+property.llap.daemon.log.maxbackupindex = 20
+
+# list of all appenders
+appenders = console, RFA, HISTORYAPPENDER
+
+# console appender
+appender.console.type = Console
+appender.console.name = console
+appender.console.target = SYSTEM_ERR
+appender.console.layout.type = PatternLayout
+appender.console.layout.pattern = %d{yy/MM/dd HH:mm:ss} [%t%x] %p %c{2} : %m%n
+
+# rolling file appender
+appender.RFA.type = RollingFile
+appender.RFA.name = RFA
+appender.RFA.fileName = ${sys:llap.daemon.log.dir}/${sys:llap.daemon.log.file}
+appender.RFA.filePattern = ${sys:llap.daemon.log.dir}/${sys:llap.daemon.log.file}_%i
+appender.RFA.layout.type = PatternLayout
+appender.RFA.layout.pattern = %d{ISO8601} %-5p [%t%x]: %c{2} (%F:%M(%L)) - %m%n
+appender.RFA.policies.type = Policies
+appender.RFA.policies.size.type = SizeBasedTriggeringPolicy
+appender.RFA.policies.size.size = ${sys:llap.daemon.log.maxfilesize}
+appender.RFA.strategy.type = DefaultRolloverStrategy
+appender.RFA.strategy.max = ${sys:llap.daemon.log.maxbackupindex}
+
+# history file appender
+appender.HISTORYAPPENDER.type = RollingFile
+appender.HISTORYAPPENDER.name = HISTORYAPPENDER
+appender.HISTORYAPPENDER.fileName = ${sys:llap.daemon.log.dir}/${sys:llap.daemon.historylog.file}
+appender.HISTORYAPPENDER.filePattern = ${sys:llap.daemon.log.dir}/${sys:llap.daemon.historylog.file}_%i
+appender.HISTORYAPPENDER.layout.type = PatternLayout
+appender.HISTORYAPPENDER.layout.pattern = %m%n
+appender.HISTORYAPPENDER.policies.type = Policies
+appender.HISTORYAPPENDER.policies.size.type = SizeBasedTriggeringPolicy
+appender.HISTORYAPPENDER.policies.size.size = ${sys:llap.daemon.log.maxfilesize}
+appender.HISTORYAPPENDER.strategy.type = DefaultRolloverStrategy
+appender.HISTORYAPPENDER.strategy.max = ${sys:llap.daemon.log.maxbackupindex}
+
+# list of all loggers
+loggers = NIOServerCnxn, ClientCnxnSocketNIO, DataNucleus, Datastore, JPOX, HistoryLogger
+
+logger.NIOServerCnxn.name = org.apache.zookeeper.server.NIOServerCnxn
+logger.NIOServerCnxn.level = WARN
+
+logger.ClientCnxnSocketNIO.name = org.apache.zookeeper.ClientCnxnSocketNIO
+logger.ClientCnxnSocketNIO.level = WARN
+
+logger.DataNucleus.name = DataNucleus
+logger.DataNucleus.level = ERROR
+
+logger.Datastore.name = Datastore
+logger.Datastore.level = ERROR
+
+logger.JPOX.name = JPOX
+logger.JPOX.level = ERROR
+
+logger.HistoryLogger.name = org.apache.hadoop.hive.llap.daemon.HistoryLogger
+logger.HistoryLogger.level = WARN
+logger.HistoryLogger.additivity = false
+logger.HistoryLogger.appenderRefs = HistoryAppender
+logger.HistoryLogger.appenderRef.HistoryAppender.ref = HISTORYAPPENDER
+
+# root logger
+rootLogger.level = ${sys:llap.daemon.log.level}
+rootLogger.appenderRefs = root
+rootLogger.appenderRef.root.ref = ${sys:llap.daemon.root.logger}
+  </value>
+    <value-attributes>
+      <type>content</type>
+      <show-property-name>false</show-property-name>
+    </value-attributes>
+  </property>
+</configuration>

ambari-server/src/main/resources/stacks/HDP/2.4/services/HIVE/configuration/llap-env.xml

@@ -0,0 +1,72 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
+<!--
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements. See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<configuration supports_final="false" supports_adding_forbidden="true">
+  <property>
+    <name>enable_hive_interactive</name>
+    <value>false</value>
+    <description>Enable or disable interactive query in this cluster.</description>
+    <display-name>Enable Interactive Query</display-name>
+    <value-attributes>
+      <type>value-list</type>
+      <entries>
+        <entry>
+          <value>true</value>
+          <label>Yes</label>
+        </entry>
+        <entry>
+          <value>false</value>
+          <label>No</label>
+        </entry>
+      </entries>
+      <selection-cardinality>1</selection-cardinality>
+    </value-attributes>
+  </property>
+  <property>
+    <name>llap_queue_name</name>
+    <value>default</value>
+    <description>LLAP Queue Name.</description>
+    <display-name>LLAP Queue Name</display-name>
+    <value-attributes>
+      <type>combo</type>
+      <entries>
+        <entry>
+          <value>default</value>
+          <label>Default</label>
+        </entry>
+      </entries>
+      <selection-cardinality>1</selection-cardinality>
+    </value-attributes>
+  </property>
+  <property>
+    <name>llap_am_queue_name</name>
+    <value>default</value>
+    <description>LLAP AM Queue Name.</description>
+    <display-name>LLAP AM Queue Name</display-name>
+    <value-attributes>
+      <type>combo</type>
+      <entries>
+        <entry>
+          <value>default</value>
+          <label>Default</label>
+        </entry>
+      </entries>
+      <selection-cardinality>1</selection-cardinality>
+    </value-attributes>
+  </property>
+</configuration>

ambari-server/src/main/resources/stacks/HDP/2.4/services/HIVE/metainfo.xml

@@ -26,7 +26,7 @@
             <name>HIVE_SERVER_INTERACTIVE</name>
             <displayName>HiveServer2 Interactive</displayName>
             <category>MASTER</category>
-            <cardinality>0+</cardinality>
+            <cardinality>0-1</cardinality>
             <versionAdvertised>true</versionAdvertised>
             <clientsToUpdateConfigs></clientsToUpdateConfigs>
             <dependencies>
@@ -97,6 +97,13 @@
                 </configuration-dependencies>
           </component>
         </components>
+        <themes>
+          <theme>
+            <fileName>theme.json</fileName>
+            <default>true</default>
+          </theme>
+        </themes>
+
       <requiredServices>
         <service>ZOOKEEPER</service>
         <service>HDFS</service>

ambari-server/src/main/resources/stacks/HDP/2.4/services/HIVE/themes/theme.json

@@ -0,0 +1,76 @@
+{
+  "configuration" : {
+    "placement" : {
+      "configs" : [
+        {
+          "config": "llap-env/enable_hive_interactive",
+          "subsection-name": "interactive-query-row1-col1"
+        },
+        {
+          "config": "llap-env/llap_queue_name",
+          "subsection-name": "interactive-query-row1-col1",
+          "depends-on": [
+            {
+              "configs":[
+                "llap-env/enable_hive_interactive"
+              ],
+              "if": "${llap-env/enable_hive_interactive}",
+              "then": {
+                "property_value_attributes": {
+                  "visible": true
+                }
+              },
+              "else": {
+                "property_value_attributes": {
+                  "visible": false
+                }
+              }
+            }
+          ]
+        },
+        {
+          "config": "llap-env/llap_am_queue_name",
+          "subsection-name": "interactive-query-row1-col1",
+          "depends-on": [
+            {
+              "configs":[
+                "llap-env/enable_hive_interactive"
+              ],
+              "if": "${llap-env/enable_hive_interactive}",
+              "then": {
+                "property_value_attributes": {
+                  "visible": true
+                }
+              },
+              "else": {
+                "property_value_attributes": {
+                  "visible": false
+                }
+              }
+            }
+          ]
+        }
+      ]
+    },
+    "widgets" : [
+      {
+        "config": "llap-env/enable_hive_interactive",
+        "widget": {
+          "type": "toggle"
+        }
+      },
+      {
+        "config": "llap-env/llap_queue_name",
+        "widget": {
+          "type": "list"
+        }
+      },
+      {
+        "config": "llap-env/llap_am_queue_name",
+        "widget": {
+          "type": "list"
+        }
+      }
+    ]
+  }
+}

ambari-web/app/controllers.js

@@ -136,6 +136,7 @@ require('controllers/wizard/step4_controller');
 require('controllers/wizard/step5_controller');
 require('controllers/wizard/step6_controller');
 require('controllers/wizard/step7_controller');
+require('controllers/wizard/step7/assign_master_controller');
 require('controllers/wizard/step7/pre_install_checks_controller');
 require('controllers/wizard/step8_controller');
 require('controllers/wizard/step9_controller');

ambari-web/app/controllers/wizard/step7/assign_master_controller.js

@@ -0,0 +1,107 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+App.AssignMasterOnStep7Controller = Em.Controller.extend(App.BlueprintMixin, App.AssignMasterComponents, {
+
+  name:"assignMasterOnStep7Controller",
+
+  useServerValidation: false,
+
+  showInstalledMastersFirst: false,
+
+  deferred: null,
+
+  popup: null,
+
+  mastersToCreate: [],
+
+  markSavedComponentsAsInstalled: true,
+
+  execute: function(context) {
+    var dfd = $.Deferred();
+    this.set('content', context.get('content'));
+    var allConfigs = context.get('stepConfigs').mapProperty('configs').filter(function(item) {
+      return item.length;
+    }).reduce(function(p, c) {
+      if (p) {
+        return p.concat(c);
+      }
+    });
+    var storedConfigs = this.get('content.serviceConfigProperties');
+    var configThemeActions =  App.configTheme.getConfigThemeActions(allConfigs, storedConfigs || []);
+
+    if (configThemeActions['add'].length) {
+      this.showAssignComponentPopup(dfd, configThemeActions['add']);
+    } else {
+      if (configThemeActions['delete'].length) {
+        this.removeMasterComponent(configThemeActions['delete']);
+      }
+      dfd.resolve();
+    }
+    return dfd.promise();
+  },
+
+  showAssignComponentPopup: function(dfd, componentsToAdd) {
+    var self = this;
+    this.set('deferred', dfd);
+    this.set('mastersToCreate', componentsToAdd);
+
+    var popup = App.ModalPopup.show({
+      classNames: ['full-width-modal', 'add-service-wizard-modal'],
+      header: Em.I18n.t('admin.highAvailability.wizard.step2.header'),
+      bodyClass: App.AssignMasterOnStep7View.extend({
+        controller: self
+      }),
+      primary: Em.I18n.t('form.cancel'),
+      showFooter: false,
+      secondary: null,
+      onClose: function () {
+        this.hide();
+      },
+      didInsertElement: function () {
+        this._super();
+        this.fitHeight();
+      }
+    });
+    this.set('popup', popup);
+  },
+
+  removeMasterComponent: function(componentsToDelete) {
+    var parentController = App.router.get(this.get('content.controllerName'));
+    var masterComponentHosts =   this.get('content.masterComponentHosts');
+    componentsToDelete.forEach(function(_componentName) {
+      masterComponentHosts = masterComponentHosts.rejectProperty('component',_componentName);
+    }, this);
+    this.get('content').set('masterComponentHosts', masterComponentHosts);
+    parentController.setDBProperty('masterComponentHosts',  masterComponentHosts);
+  },
+
+  /**
+   * Submit button click handler
+   * @method submit
+   */
+  submit: function () {
+    if (this.get('deferred')) {
+      this.get('popup').hide();
+      var controller = App.router.get(this.get('content.controllerName'));
+      controller.saveMasterComponentHosts(this);
+      this.get('deferred').resolve();
+      this.set('deferred', null);
+    }
+  }
+});

ambari-web/app/controllers/wizard/step7_controller.js

@@ -1614,17 +1614,24 @@ App.WizardStep7Controller = Em.Controller.extend(App.ServerValidatorMixin, App.E
    * @method submit
    */
   submit: function () {
+    var self = this;
     if (this.get('isSubmitDisabled') || App.router.nextBtnClickInProgress) {
       return false;
     }
-    var preInstallChecksController = App.router.get('preInstallChecksController');
+
+    var assignMasterOnStep7Controller =  App.router.get('assignMasterOnStep7Controller');
+    var dfdPromise = assignMasterOnStep7Controller.execute(self);
+
     if (this.get('supportsPreInstallChecks')) {
+      var preInstallChecksController = App.router.get('preInstallChecksController');
       if (preInstallChecksController.get('preInstallChecksWhereRun')) {
-        return this.postSubmit();
+        return dfdPromise.done(self.postSubmit.bind(self));
       }
-      return preInstallChecksController.notRunChecksWarnPopup(this.postSubmit.bind(this));
+      return dfdPromise.done(function() {
+        preInstallChecksController.notRunChecksWarnPopup(self.postSubmit.bind(self));
+      });
     }
-    return this.postSubmit();
+    return dfdPromise.done(self.postSubmit.bind(self));
   },
 
   postSubmit: function () {

ambari-web/app/controllers/wizard/step8_controller.js

@@ -437,8 +437,6 @@ App.WizardStep8Controller = Em.Controller.extend(App.AddSecurityConfigs, App.wiz
       service.get('serviceComponents').forEach(function (component) {
         // show clients for services that have only clients components
         if ((component.get('isClient') || component.get('isRequiredOnAllHosts')) && !service.get('isClientOnlyService')) return;
-        // skip components that was hide on assign master page
-        if (component.get('isMaster') && !component.get('isShownOnInstallerAssignMasterPage')) return;
         // no HA component
         if (component.get('isHAComponentOnly')) return;
         // skip if component is not allowed on single node cluster
@@ -450,11 +448,19 @@ App.WizardStep8Controller = Em.Controller.extend(App.AddSecurityConfigs, App.wiz
           // remove service name from component display name
           displayName = App.format.role(component.get('componentName')).replace(new RegExp('^' + service.get('serviceName') + '\\s', 'i'), '');
         }
-        serviceObj.get('service_components').pushObject(Em.Object.create({
-          component_name: component.get('isClient') ? Em.I18n.t('common.client').toUpperCase() : component.get('componentName'),
-          display_name: displayName,
-          component_value: this.assignComponentHosts(component)
-        }));
+
+        var componentName = component.get('componentName');
+        var masterComponents = this.get('content.masterComponentHosts');
+        var isMasterComponentSelected = masterComponents.someProperty('component', componentName);
+        var isMaster = component.get('isMaster');
+
+        if (!isMaster || isMasterComponentSelected) {
+          serviceObj.get('service_components').pushObject(Em.Object.create({
+            component_name: component.get('isClient') ? Em.I18n.t('common.client').toUpperCase() : component.get('componentName'),
+            display_name: displayName,
+            component_value: this.assignComponentHosts(component)
+          }));
+        }
       }, this);
       if (service.get('customReviewHandler')) {
         for (var displayName in service.get('customReviewHandler')) {

ambari-web/app/messages.js

@@ -853,6 +853,9 @@ Em.I18n.translations = {
   'installer.step7.preInstallChecks.checksPopup.header':'Pre Install Checks',
 
 
+  'installer.step7.assign.master.body':'Assign {0} to {1} you want to run {2} on.',
+
+
   'installer.step8.header': 'Review',
   'installer.step8.body': 'Please review the configuration before installation',
   'installer.step8.kerberors.warning': '<strong>Because Kerberos has been manually installed on the cluster, you will have to create/distribute principals and keytabs when this operation is finished.</strong>',

ambari-web/app/mixins/wizard/assign_master_components.js

@@ -36,6 +36,12 @@ App.AssignMasterComponents = Em.Mixin.create({
    */
   mastersToShow: [],
 
+  /**
+   * Array of master component names to show on the service config assign master page
+   * @type {Array}
+   */
+  mastersToCreate: [],
+
   /**
    * Array of master component names to add for install
    * @type {Array}
@@ -110,6 +116,8 @@ App.AssignMasterComponents = Em.Mixin.create({
    */
   recommendedHostsForComponents: {},
 
+  markSavedComponentsAsInstalled: false,
+
   /**
    * Array of <code>servicesMasters</code> objects, that will be shown on the page
    * Are filtered using <code>mastersToShow</code>
@@ -446,7 +454,7 @@ App.AssignMasterComponents = Em.Mixin.create({
   },
 
   /**
-   * Composes selected values of comboboxes into master blueprint + merge it with currenlty installed slave blueprint
+   * Composes selected values of comboboxes into master blueprint + merge it with currently installed slave blueprint
    */
   getCurrentBlueprint: function() {
     var self = this;
@@ -516,7 +524,7 @@ App.AssignMasterComponents = Em.Mixin.create({
     self.get('addableComponents').forEach(function (componentName) {
       self.updateComponent(componentName);
     }, self);
-    if (self.thereIsNoMasters()) {
+    if (self.thereIsNoMasters() && !this.get('mastersToCreate').length) {
       App.router.send('next');
     }
   },
@@ -668,11 +676,11 @@ App.AssignMasterComponents = Em.Mixin.create({
 
     App.StackServiceComponent.find().forEach(function(component) {
       if (this.get('isInstallerWizard')) {
-        if (component.get('isShownOnInstallerAssignMasterPage')) {
+        if (component.get('isShownOnInstallerAssignMasterPage') || this.get('mastersToCreate').contains(component.get('componentName'))) {
           stackMasterComponentsMap[component.get('componentName')] = component;
         }
       } else {
-        if (component.get('isShownOnAddServiceAssignMasterPage') || this.get('mastersToShow').contains(component.get('componentName'))) {
+        if (component.get('isShownOnAddServiceAssignMasterPage') || this.get('mastersToShow').contains(component.get('componentName')) || this.get('mastersToCreate').contains(component.get('componentName'))) {
           stackMasterComponentsMap[component.get('componentName')] = component;
         }
       }
@@ -737,7 +745,7 @@ App.AssignMasterComponents = Em.Mixin.create({
     componentObj.serviceId = fullComponent.get('serviceName');
     componentObj.isServiceCoHost = App.StackServiceComponent.find().findProperty('componentName', componentName).get('isCoHostedComponent') && !this.get('mastersToMove').contains(componentName);
     componentObj.selectedHost = savedComponent ? savedComponent.hostName : hostName;
-    componentObj.isInstalled = savedComponent ? savedComponent.isInstalled : false;
+    componentObj.isInstalled = savedComponent ? savedComponent.isInstalled || (this.get('markSavedComponentsAsInstalled') && !this.get('mastersToCreate').contains(fullComponent.get('componentName'))) : false;
     return componentObj;
   },
 

ambari-web/app/models.js

@@ -70,6 +70,7 @@ require('models/configs/theme/tab');
 require('models/configs/theme/section');
 require('models/configs/theme/sub_section');
 require('models/configs/theme/sub_section_tab');
+require('models/configs/theme/config_action');
 require('models/configs/objects/service_config');
 require('models/configs/objects/service_config_category');
 require('models/configs/objects/service_config_property');

ambari-web/app/models/configs/theme/config_action.js

@@ -0,0 +1,57 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * THIS IS NOT USED FOR NOW
+ * FOR CONFIG GROUPS WE ARE USING OLD MODELS AND LOGIC
+ */
+
+var App = require('app');
+
+App.ConfigAction = DS.Model.extend({
+
+  hostComponent: DS.attr('string'),
+
+  configs: DS.attr('array', {defaultValue: []}),
+
+  /**
+   * conditional String which can be evaluated to boolean result.
+   * If evaluated result of this staring is true then use the statement provided by `then` attribute.
+   * Otherwise use the attribute provided by `else` attributes
+   */
+  if: DS.attr('string'),
+  then: DS.attr('string'),
+  else: DS.attr('string')
+
+});
+
+App.ConfigAction.FIXTURES = [
+  {
+    id:1,
+    host_component: 'HIVE_SERVER_INTERACTIVE',
+    "configs":[
+      {
+        configName: "enable_hive_interactive",
+        fileName: "llap-env.xml"
+      }
+    ],
+    if:'${llap-env/enable_hive_interactive}',
+    then:'add',
+    else: 'delete'
+  }
+];

ambari-web/app/models/stack_service_component.js

@@ -101,7 +101,7 @@ App.StackServiceComponent = DS.Model.extend({
   /** @property {Boolean} isShownOnInstallerAssignMasterPage - component visible on "Assign Masters" step of Install Wizard **/
   isShownOnInstallerAssignMasterPage: function() {
     var component = this.get('componentName');
-    var mastersNotShown = ['MYSQL_SERVER', 'POSTGRESQL_SERVER'];
+    var mastersNotShown = ['MYSQL_SERVER', 'POSTGRESQL_SERVER', 'HIVE_SERVER_INTERACTIVE'];
     return this.get('isMaster') && !mastersNotShown.contains(component);
   }.property('isMaster','componentName'),
 

ambari-web/app/templates/common/assign_master_components.hbs

@@ -138,7 +138,9 @@
     {{view App.SpinnerView}}
   {{/if}}
   <div class="btn-area">
+  {{#if view.isBackButtonVisible}}
     <a class="btn pull-left installer-back-btn" {{action back}}>&larr; {{t common.back}}</a>
-    <a class="btn btn-success pull-right" {{bindAttr disabled="submitDisabled"}} {{action submit target="controller"}}>{{t common.next}} &rarr;</a>
+  {{/if}}
+  <a class="btn btn-success pull-right" {{bindAttr disabled="submitDisabled"}} {{action submit target="controller"}}>{{t common.next}} &rarr;</a>
   </div>
 </div>

ambari-web/app/utils/configs/theme/theme.js

@@ -61,7 +61,50 @@ App.configTheme = Em.Object.create({
           }
         }
       }
-    });
+    }, this);
+  },
+
+  getConfigThemeActions: function(configs, storedConfigs) {
+    //config actions for changed configs should be only effective
+    var configActions = App.ConfigAction.find().filter(function(item){
+      var isAnyConfigAbsent = false;
+      var configChanged = false;
+      item.get("configs").forEach(function(_config){
+        var config = configs.filterProperty('filename',_config.fileName).findProperty('name', _config.configName);
+        if (!config) {
+          isAnyConfigAbsent = true;
+        } else {
+          configChanged = configChanged || config.get('value') != config.get('recommendedValue');
+          var storedConfig = storedConfigs.filterProperty('filename',_config.fileName).findProperty('name', _config.configName);
+          if (storedConfig) {
+            configChanged = configChanged || config.get('value') != storedConfig.value;
+          }
+        }
+      }, this);
+      return !isAnyConfigAbsent && configChanged;
+    }, this);
+
+    var componentsToAdd = [];
+    var componentsToDelete = [];
+    configActions.forEach(function(_action){
+      var isConditionTrue = this.calculateConfigCondition(_action.get('if'), configs);
+      var action = isConditionTrue ? _action.get("then") : _action.get("else");
+      switch(action) {
+        case 'add':
+          componentsToAdd.push(_action.get('hostComponent'));
+          break;
+        case 'delete':
+          componentsToDelete.push(_action.get('hostComponent'));
+          break;
+      }
+    }, this);
+
+    var configThemeActions = {
+      add: componentsToAdd,
+      delete: componentsToDelete
+    };
+
+    return configThemeActions;
   },
 
   /**

ambari-web/app/views.js

@@ -328,6 +328,7 @@ require('views/wizard/step4_view');
 require('views/wizard/step5_view');
 require('views/wizard/step6_view');
 require('views/wizard/step7_view');
+require('views/wizard/step7/assign_master_view');
 require('views/main/service/reassign/step7_view');
 require('views/wizard/step8_view');
 require('views/wizard/step9_view');

ambari-web/app/views/common/assign_master_components_view.js

@@ -41,6 +41,8 @@ App.AssignMasterComponentsView = Em.View.extend({
    */
   shouldUseInputs: Em.computed.gt('controller.hosts.length', 25),
 
+  isBackButtonVisible: true,
+
   didInsertElement: function () {
     this.get('controller').loadStep();
   }

ambari-web/app/views/wizard/step7/assign_master_view.js

@@ -0,0 +1,44 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+var App = require('app');
+
+require('views/wizard/step5_view');
+
+App.AssignMasterOnStep7View = App.AssignMasterComponentsView.extend({
+
+  title: Em.I18n.t('installer.step5.header'),
+
+  alertMessage: '',
+
+  isBackButtonVisible: false,
+
+  willInsertElement: function() {
+    this._super();
+    var mastersToCreate = this.get('controller.mastersToCreate');
+    var mastersToCreateDisplayName =  mastersToCreate.map(function(item){
+      return App.StackServiceComponent.find().findProperty('componentName', item).get('displayName');
+    });
+    var stringText1 =  mastersToCreate.length > 1 ? 'hosts' : 'host';
+    var stringText2 =  mastersToCreate.length > 1 ? 'them' : 'it';
+    var alertMessage = Em.I18n.t('installer.step7.assign.master.body').format(mastersToCreateDisplayName.join(), stringText1, stringText2);
+    this.set('alertMessage', alertMessage)
+  }
+
+});

ambari-web/test/controllers/wizard/step8_test.js

@@ -376,7 +376,8 @@ describe('App.WizardStep8Controller', function () {
         hosts: Em.A([
           Em.Object.create({hostName: 'h1', isInstalled: true}),
           Em.Object.create({hostName: 'h2', isInstalled: false})
-        ])
+        ]),
+        masterComponentHosts: []
       });
       installerStep8Controller.set('content', content);
       installerStep8Controller.set('services', Em.A([]));