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From nc...@apache.org
Subject [07/23] ambari git commit: AMBARI-14555. Add Blueprints support for starting only a subset of components within a host group. (rnettleton)
Date Mon, 11 Jan 2016 14:38:43 GMT
AMBARI-14555. Add Blueprints support for starting only a subset of components within a host group. (rnettleton)


Project: http://git-wip-us.apache.org/repos/asf/ambari/repo
Commit: http://git-wip-us.apache.org/repos/asf/ambari/commit/6d06814f
Tree: http://git-wip-us.apache.org/repos/asf/ambari/tree/6d06814f
Diff: http://git-wip-us.apache.org/repos/asf/ambari/diff/6d06814f

Branch: refs/heads/branch-dev-patch-upgrade
Commit: 6d06814f729d45db11d63465d0e9d640c49d2b23
Parents: 0c049aa
Author: Bob Nettleton <rnettleton@hortonworks.com>
Authored: Fri Jan 8 22:25:59 2016 -0500
Committer: Bob Nettleton <rnettleton@hortonworks.com>
Committed: Fri Jan 8 22:26:27 2016 -0500

----------------------------------------------------------------------
 .../query/render/ClusterBlueprintRenderer.java  |  5 +-
 .../StackAdvisorBlueprintProcessor.java         |  2 +-
 .../internal/BlueprintResourceProvider.java     |  6 ++
 .../internal/ExportBlueprintRequest.java        | 10 ++-
 .../internal/HostComponentResourceProvider.java | 38 +++++++++++-
 .../controller/internal/ProvisionAction.java    | 25 ++++++++
 .../internal/ProvisionClusterRequest.java       |  5 --
 .../orm/entities/HostGroupComponentEntity.java  | 24 ++++++++
 .../entities/HostGroupComponentEntityPK.java    |  4 ++
 .../ambari/server/topology/AmbariContext.java   |  4 +-
 .../server/topology/BlueprintFactory.java       | 17 ++++--
 .../ambari/server/topology/BlueprintImpl.java   | 15 +++--
 .../server/topology/BlueprintValidatorImpl.java |  4 +-
 .../ambari/server/topology/ClusterTopology.java |  3 +-
 .../server/topology/ClusterTopologyImpl.java    | 15 +++--
 .../ambari/server/topology/Component.java       | 59 ++++++++++++++++++
 .../ambari/server/topology/HostGroup.java       | 34 ++++++++++-
 .../ambari/server/topology/HostGroupImpl.java   | 64 +++++++++++++++++---
 .../ambari/server/topology/HostRequest.java     |  4 +-
 .../ambari/server/topology/LogicalRequest.java  |  2 +-
 .../topology/RequiredPasswordValidator.java     |  2 +-
 .../server/upgrade/UpgradeCatalog221.java       | 12 ++++
 .../main/resources/Ambari-DDL-Derby-CREATE.sql  |  1 +
 .../main/resources/Ambari-DDL-MySQL-CREATE.sql  |  1 +
 .../main/resources/Ambari-DDL-Oracle-CREATE.sql |  1 +
 .../resources/Ambari-DDL-Postgres-CREATE.sql    |  1 +
 .../Ambari-DDL-Postgres-EMBEDDED-CREATE.sql     |  1 +
 .../resources/Ambari-DDL-SQLAnywhere-CREATE.sql |  1 +
 .../resources/Ambari-DDL-SQLServer-CREATE.sql   |  1 +
 .../render/ClusterBlueprintRendererTest.java    |  7 ++-
 .../StackAdvisorBlueprintProcessorTest.java     |  8 +--
 .../BlueprintConfigurationProcessorTest.java    |  8 ++-
 .../internal/ExportBlueprintRequestTest.java    |  2 +-
 .../entities/HostGroupComponentEntityTest.java  |  8 +++
 .../server/topology/BlueprintFactoryTest.java   |  4 +-
 .../server/topology/BlueprintImplTest.java      | 40 ++++++------
 .../topology/BlueprintValidatorImplTest.java    |  6 +-
 .../ClusterInstallWithoutStartTest.java         |  6 +-
 .../topology/ClusterTopologyImplTest.java       | 18 +++---
 .../topology/RequiredPasswordValidatorTest.java |  4 +-
 .../server/topology/TopologyManagerTest.java    |  4 +-
 .../server/upgrade/UpgradeCatalog221Test.java   | 28 +++++----
 42 files changed, 401 insertions(+), 103 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRenderer.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRenderer.java b/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRenderer.java
index 3705ceb..1a9ea91 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRenderer.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRenderer.java
@@ -49,6 +49,7 @@ import org.apache.ambari.server.state.SecurityType;
 import org.apache.ambari.server.topology.AmbariContext;
 import org.apache.ambari.server.topology.ClusterTopology;
 import org.apache.ambari.server.topology.ClusterTopologyImpl;
+import org.apache.ambari.server.topology.Component;
 import org.apache.ambari.server.topology.Configuration;
 import org.apache.ambari.server.topology.HostGroup;
 import org.apache.ambari.server.topology.HostGroupInfo;
@@ -325,10 +326,10 @@ public class ClusterBlueprintRenderer extends BaseRenderer implements Renderer {
    */
   private List<Map<String, String>> processHostGroupComponents(HostGroup group) {
     List<Map<String, String>> listHostGroupComponents = new ArrayList<Map<String, String>>();
-    for (String component : group.getComponents()) {
+    for (Component component : group.getComponents()) {
       Map<String, String> mapComponentProperties = new HashMap<String, String>();
       listHostGroupComponents.add(mapComponentProperties);
-      mapComponentProperties.put("name", component);
+      mapComponentProperties.put("name", component.getName());
     }
     return listHostGroupComponents;
   }

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessor.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessor.java b/ambari-server/src/main/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessor.java
index d57c17d..337ad06 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessor.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessor.java
@@ -105,7 +105,7 @@ public class StackAdvisorBlueprintProcessor {
   private Map<String, Set<String>> gatherHostGroupComponents(ClusterTopology clusterTopology) {
     Map<String, Set<String>> hgComponentsMap = Maps.newHashMap();
     for (Map.Entry<String, HostGroup> hgEnrty: clusterTopology.getBlueprint().getHostGroups().entrySet()) {
-      hgComponentsMap.put(hgEnrty.getKey(), Sets.newCopyOnWriteArraySet(hgEnrty.getValue().getComponents()));
+      hgComponentsMap.put(hgEnrty.getKey(), Sets.newCopyOnWriteArraySet(hgEnrty.getValue().getComponentNames()));
     }
     return hgComponentsMap;
   }

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BlueprintResourceProvider.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BlueprintResourceProvider.java b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BlueprintResourceProvider.java
index f3100b5..a4b2aaa 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BlueprintResourceProvider.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BlueprintResourceProvider.java
@@ -92,6 +92,7 @@ public class BlueprintResourceProvider extends AbstractControllerResourceProvide
   // Host Group Components
   public static final String COMPONENT_PROPERTY_ID ="components";
   public static final String COMPONENT_NAME_PROPERTY_ID ="name";
+  public static final String COMPONENT_PROVISION_ACTION_PROPERTY_ID = "provision_action";
 
   // Configurations
   public static final String CONFIGURATION_PROPERTY_ID = "configurations";
@@ -305,6 +306,11 @@ public class BlueprintResourceProvider extends AbstractControllerResourceProvide
       for (HostGroupComponentEntity component : components) {
         Map<String, String> mapComponentProps = new HashMap<String, String>();
         mapComponentProps.put(COMPONENT_NAME_PROPERTY_ID, component.getName());
+
+        if (component.getProvisionAction() != null) {
+          mapComponentProps.put(COMPONENT_PROVISION_ACTION_PROPERTY_ID, component.getProvisionAction().toString());
+        }
+
         listComponentProps.add(mapComponentProps);
       }
       mapGroupProps.put(COMPONENT_PROPERTY_ID, listComponentProps);

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequest.java b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequest.java
index 8c8b89d..4d8e56f 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequest.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequest.java
@@ -29,6 +29,7 @@ import org.apache.ambari.server.state.DesiredConfig;
 import org.apache.ambari.server.state.HostConfig;
 import org.apache.ambari.server.topology.Blueprint;
 import org.apache.ambari.server.topology.BlueprintImpl;
+import org.apache.ambari.server.topology.Component;
 import org.apache.ambari.server.topology.Configuration;
 import org.apache.ambari.server.topology.HostGroup;
 import org.apache.ambari.server.topology.HostGroupImpl;
@@ -130,7 +131,14 @@ public class ExportBlueprintRequest implements TopologyRequest {
 
     Collection<HostGroup> hostGroups = new ArrayList<HostGroup>();
     for (ExportedHostGroup exportedHostGroup : exportedHostGroups) {
-      hostGroups.add(new HostGroupImpl(exportedHostGroup.getName(), bpName, stack, exportedHostGroup.getComponents(),
+
+      // create Component using component name
+      List<Component> componentList = new ArrayList<Component>();
+      for (String component : exportedHostGroup.getComponents()) {
+        componentList.add(new Component(component));
+      }
+
+      hostGroups.add(new HostGroupImpl(exportedHostGroup.getName(), bpName, stack, componentList,
           exportedHostGroup.getConfiguration(), String.valueOf(exportedHostGroup.getCardinality())));
     }
     blueprint = new BlueprintImpl(bpName, hostGroups, stack, configuration, null);

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/HostComponentResourceProvider.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/HostComponentResourceProvider.java b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/HostComponentResourceProvider.java
index 194d75f..a2a58e8 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/HostComponentResourceProvider.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/HostComponentResourceProvider.java
@@ -392,7 +392,16 @@ public class HostComponentResourceProvider extends AbstractControllerResourcePro
     return requestStages.getRequestStatusResponse();
   }
 
+
+  // TODO, revisit this extra method, that appears to be used during Add Hosts
+  // TODO, How do we determine the component list for INSTALL_ONLY during an Add Hosts operation? rwn
   public RequestStatusResponse start(String cluster, String hostName) throws  SystemException,
+    UnsupportedPropertyException, NoSuchParentResourceException {
+
+    return this.start(cluster, hostName, Collections.<String>emptySet());
+  }
+
+  public RequestStatusResponse start(String cluster, String hostName, Collection<String> installOnlyComponents) throws  SystemException,
       UnsupportedPropertyException, NoSuchParentResourceException {
 
     Map<String, String> requestInfo = new HashMap<String, String>();
@@ -416,9 +425,34 @@ public class HostComponentResourceProvider extends AbstractControllerResourcePro
       Predicate notClientPredicate = new NotPredicate(new ClientComponentPredicate());
       Predicate clusterAndClientPredicate = new AndPredicate(clusterPredicate, notClientPredicate);
       Predicate hostAndStatePredicate = new AndPredicate(installedStatePredicate, hostPredicate);
-      Predicate startPredicate = new AndPredicate(clusterAndClientPredicate, hostAndStatePredicate);
+      Predicate startPredicate;
+
+      if (installOnlyComponents.isEmpty()) {
+        // all installed components should be started
+        startPredicate = new AndPredicate(clusterAndClientPredicate, hostAndStatePredicate);
+        LOG.info("Starting all non-client components on host: " + hostName);
+      } else {
+        // any INSTALL_ONLY components should not be started
+        List<Predicate> listOfComponentPredicates =
+          new ArrayList<Predicate>();
+
+        for (String installOnlyComponent : installOnlyComponents) {
+          Predicate componentNameEquals = new EqualsPredicate<String>(HOST_COMPONENT_COMPONENT_NAME_PROPERTY_ID, installOnlyComponent);
+          // create predicate to filter out the install only component
+          listOfComponentPredicates.add(new NotPredicate(componentNameEquals));
+        }
+
+        Predicate[] arrayOfInstallOnlyPredicates = new Predicate[listOfComponentPredicates.size()];
+        // aggregate Predicate of all INSTALL_ONLY component names
+        Predicate installOnlyComponentsPredicate = new AndPredicate(listOfComponentPredicates.toArray(arrayOfInstallOnlyPredicates));
+
+        // start predicate must now include the INSTALL_ONLY component predicates, in
+        // order to filter out those components for START attempts
+        startPredicate = new AndPredicate(clusterAndClientPredicate, hostAndStatePredicate, installOnlyComponentsPredicate);
+        LOG.info("Starting all non-client components on host: " + hostName + ", except for the INSTALL_ONLY components specified: " + installOnlyComponents);
+      }
+
 
-      LOG.info("Starting all non-client components on host: " + hostName);
       requestStages = doUpdateResources(null, startRequest, startPredicate, true);
       notifyUpdate(Resource.Type.HostComponent, startRequest, startPredicate);
       try {

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionAction.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionAction.java b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionAction.java
new file mode 100644
index 0000000..9874c5e
--- /dev/null
+++ b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionAction.java
@@ -0,0 +1,25 @@
+/**
+ * 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.
+ */
+
+package org.apache.ambari.server.controller.internal;
+
+
+public enum ProvisionAction {
+  INSTALL_ONLY,     // Skip Start
+  INSTALL_AND_START // Default action
+}

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionClusterRequest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionClusterRequest.java b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionClusterRequest.java
index 7b1de26..6a11b26 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionClusterRequest.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ProvisionClusterRequest.java
@@ -99,11 +99,6 @@ public class ProvisionClusterRequest extends BaseClusterRequest {
    */
   public static final String PROVISION_ACTION_PROPERTY = "provision_action";
 
-  public enum ProvisionAction {
-    INSTALL_ONLY,     // Skip Start
-    INSTALL_AND_START // Default action
-  }
-
   /**
    * configuration factory
    */

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntity.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntity.java b/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntity.java
index 984c549..046bbd8 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntity.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntity.java
@@ -47,6 +47,10 @@ public class HostGroupComponentEntity {
   @Column(name = "name", nullable = false, insertable = true, updatable = false)
   private String name;
 
+  @Id
+  @Column(name = "provision_action", nullable = true, insertable = true, updatable = false)
+  private String provisionAction;
+
   @ManyToOne
   @JoinColumns({
       @JoinColumn(name = "hostgroup_name", referencedColumnName = "name", nullable = false),
@@ -126,4 +130,24 @@ public class HostGroupComponentEntity {
   public void setBlueprintName(String blueprintName) {
     this.blueprintName = blueprintName;
   }
+
+  /**
+   * Get the provision action associated with this
+   *   component.
+   *
+   * @return provision action
+   */
+  public String getProvisionAction() {
+    return provisionAction;
+  }
+
+  /**
+   * Set the provision action associated with this
+   *   component.
+   *
+   * @param provisionAction action associated with the component (example: INSTALL_ONLY, INSTALL_AND_START)
+   */
+  public void setProvisionAction(String provisionAction) {
+    this.provisionAction = provisionAction;
+  }
 }

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityPK.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityPK.java b/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityPK.java
index fb9011b..0e97346 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityPK.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityPK.java
@@ -38,6 +38,10 @@ public class HostGroupComponentEntityPK {
   @Column(name = "name", nullable = false, insertable = true, updatable = false, length = 100)
   private String name;
 
+  @Id
+  @Column(name = "provision_action", nullable = true, insertable = true, updatable = false, length = 100)
+  private String provisionAction;
+
   /**
    * Get the name of the associated host group.
    *

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/AmbariContext.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/AmbariContext.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/AmbariContext.java
index 6bfee93..87225ad 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/AmbariContext.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/AmbariContext.java
@@ -338,9 +338,9 @@ public class AmbariContext {
     }
   }
 
-  public RequestStatusResponse startHost(String hostName, String clusterName) {
+  public RequestStatusResponse startHost(String hostName, String clusterName, Collection<String> installOnlyComponents) {
     try {
-      return getHostComponentResourceProvider().start(clusterName, hostName);
+      return getHostComponentResourceProvider().start(clusterName, hostName, installOnlyComponents);
     } catch (Exception e) {
       e.printStackTrace();
       throw new RuntimeException("START Host request submission failed: " + e, e);

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintFactory.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintFactory.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintFactory.java
index b8ce749..cca28ca 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintFactory.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintFactory.java
@@ -24,6 +24,7 @@ import org.apache.ambari.server.AmbariException;
 import org.apache.ambari.server.ObjectNotFoundException;
 import org.apache.ambari.server.controller.AmbariManagementController;
 import org.apache.ambari.server.controller.AmbariServer;
+import org.apache.ambari.server.controller.internal.ProvisionAction;
 import org.apache.ambari.server.controller.internal.Stack;
 import org.apache.ambari.server.controller.utilities.PropertyHelper;
 import org.apache.ambari.server.orm.dao.BlueprintDAO;
@@ -58,6 +59,7 @@ public class BlueprintFactory {
   // Host Group Components
   protected static final String COMPONENT_PROPERTY_ID ="components";
   protected static final String COMPONENT_NAME_PROPERTY_ID ="name";
+  protected static final String COMPONENT_PROVISION_ACTION_PROPERTY_ID = "provision_action";
 
   // Configurations
   protected static final String CONFIGURATION_PROPERTY_ID = "configurations";
@@ -144,7 +146,7 @@ public class BlueprintFactory {
       Collection<Map<String, String>> configProps = (Collection<Map<String, String>>)
           hostGroupProperties.get(CONFIGURATION_PROPERTY_ID);
 
-      Collection<String> components = processHostGroupComponents(stack, hostGroupName, componentProps);
+      Collection<Component> components = processHostGroupComponents(stack, hostGroupName, componentProps);
       Configuration configuration = configFactory.getConfiguration(configProps);
       String cardinality = String.valueOf(hostGroupProperties.get(HOST_GROUP_CARDINALITY_PROPERTY_ID));
 
@@ -155,13 +157,13 @@ public class BlueprintFactory {
     return hostGroups;
   }
 
-  private Collection<String> processHostGroupComponents(Stack stack, String groupName, HashSet<HashMap<String, String>>  componentProps) {
+  private Collection<Component> processHostGroupComponents(Stack stack, String groupName, HashSet<HashMap<String, String>>  componentProps) {
     if (componentProps == null || componentProps.isEmpty()) {
       throw new IllegalArgumentException("Host group '" + groupName + "' must contain at least one component");
     }
 
     Collection<String> stackComponentNames = getAllStackComponents(stack);
-    Collection<String> components = new ArrayList<String>();
+    Collection<Component> components = new ArrayList<Component>();
 
     for (HashMap<String, String> componentProperties : componentProps) {
       String componentName = componentProperties.get(COMPONENT_NAME_PROPERTY_ID);
@@ -174,9 +176,16 @@ public class BlueprintFactory {
         throw new IllegalArgumentException("The component '" + componentName + "' in host group '" +
             groupName + "' is not valid for the specified stack");
       }
-      components.add(componentName);
 
+      String componentProvisionAction = componentProperties.get(COMPONENT_PROVISION_ACTION_PROPERTY_ID);
+      if (componentProvisionAction != null) {
+        //TODO, might want to add some validation here, to only accept value enum types, rwn
+        components.add(new Component(componentName, ProvisionAction.valueOf(componentProvisionAction)));
+      } else {
+        components.add(new Component(componentName));
+      }
     }
+
     return components;
   }
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintImpl.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintImpl.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintImpl.java
index 88052b0..bea0364 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintImpl.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintImpl.java
@@ -157,7 +157,7 @@ public class BlueprintImpl implements Blueprint {
   public Collection<HostGroup> getHostGroupsForComponent(String component) {
     Collection<HostGroup> resultGroups = new HashSet<HostGroup>();
     for (HostGroup group : hostGroups.values() ) {
-      if (group.getComponents().contains(component)) {
+      if (group.getComponentNames().contains(component)) {
         resultGroups.add(group);
       }
     }
@@ -358,18 +358,25 @@ public class BlueprintImpl implements Blueprint {
     * Create component entities and add to parent host group.
     */
   @SuppressWarnings("unchecked")
-  private void createComponentEntities(HostGroupEntity group, Collection<String> components) {
+  private void createComponentEntities(HostGroupEntity group, Collection<Component> components) {
     Collection<HostGroupComponentEntity> componentEntities = new HashSet<HostGroupComponentEntity>();
     group.setComponents(componentEntities);
 
-    for (String component : components) {
+    for (Component component : components) {
       HostGroupComponentEntity componentEntity = new HostGroupComponentEntity();
       componentEntities.add(componentEntity);
 
-      componentEntity.setName(component);
+      componentEntity.setName(component.getName());
       componentEntity.setBlueprintName(group.getBlueprintName());
       componentEntity.setHostGroupEntity(group);
       componentEntity.setHostGroupName(group.getName());
+
+      // add provision action (if specified) to entity type
+      // otherwise, just leave this column null (provision_action)
+      if (component.getProvisionAction() != null) {
+        componentEntity.setProvisionAction(component.getProvisionAction().toString());
+      }
+
     }
     group.setComponents(componentEntities);
   }

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintValidatorImpl.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintValidatorImpl.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintValidatorImpl.java
index 1c293ee..432c6f8 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintValidatorImpl.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/BlueprintValidatorImpl.java
@@ -116,7 +116,7 @@ public class BlueprintValidatorImpl implements BlueprintValidator {
       Map<String, Map<String, String>> operationalConfiguration = new HashMap<String, Map<String, String>>(clusterConfigurations);
 
       operationalConfiguration.putAll(hostGroup.getConfiguration().getProperties());
-      for (String component : hostGroup.getComponents()) {
+      for (String component : hostGroup.getComponentNames()) {
         //check that MYSQL_SERVER component is not available while hive is using existing db
         if (component.equals("MYSQL_SERVER")) {
           Map<String, String> hiveEnvConfig = clusterConfigurations.get("hive-env");
@@ -228,7 +228,7 @@ public class BlueprintValidatorImpl implements BlueprintValidator {
         new HashMap<String, Collection<DependencyInfo>>();
 
     Collection<String> blueprintServices = blueprint.getServices();
-    Collection<String> groupComponents = group.getComponents();
+    Collection<String> groupComponents = group.getComponentNames();
     for (String component : new HashSet<String>(groupComponents)) {
       Collection<DependencyInfo> dependenciesForComponent = stack.getDependenciesForComponent(component);
       for (DependencyInfo dependency : dependenciesForComponent) {

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopology.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopology.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopology.java
index c3c04db..4e178c0 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopology.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopology.java
@@ -19,8 +19,7 @@
 package org.apache.ambari.server.topology;
 
 import org.apache.ambari.server.controller.RequestStatusResponse;
-import org.apache.ambari.server.controller.internal.ProvisionClusterRequest;
-import org.apache.ambari.server.controller.internal.ProvisionClusterRequest.ProvisionAction;
+import org.apache.ambari.server.controller.internal.ProvisionAction;
 
 import java.util.Collection;
 import java.util.Map;

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopologyImpl.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopologyImpl.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopologyImpl.java
index e78300c..91965f1 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopologyImpl.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/ClusterTopologyImpl.java
@@ -21,8 +21,7 @@ package org.apache.ambari.server.topology;
 
 import org.apache.ambari.server.AmbariException;
 import org.apache.ambari.server.controller.RequestStatusResponse;
-import org.apache.ambari.server.controller.internal.ProvisionClusterRequest;
-import org.apache.ambari.server.controller.internal.ProvisionClusterRequest.ProvisionAction;
+import org.apache.ambari.server.controller.internal.ProvisionAction;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -121,7 +120,7 @@ public class ClusterTopologyImpl implements ClusterTopology {
   public Collection<String> getHostGroupsForComponent(String component) {
     Collection<String> resultGroups = new ArrayList<String>();
     for (HostGroup group : getBlueprint().getHostGroups().values() ) {
-      if (group.getComponents().contains(component)) {
+      if (group.getComponentNames().contains(component)) {
         resultGroups.add(group.getName());
       }
     }
@@ -231,7 +230,15 @@ public class ClusterTopologyImpl implements ClusterTopology {
   @Override
   public RequestStatusResponse startHost(String hostName) {
     try {
-      return ambariContext.startHost(hostName, ambariContext.getClusterName(getClusterId()));
+      String hostGroupName = getHostGroupForHost(hostName);
+      HostGroup hostGroup = this.blueprint.getHostGroup(hostGroupName);
+
+      // get the set of components that are marked as INSTALL_ONLY
+      // for this hostgroup
+      Collection<String> installOnlyComponents =
+        hostGroup.getComponentNames(ProvisionAction.INSTALL_ONLY);
+
+      return ambariContext.startHost(hostName, ambariContext.getClusterName(getClusterId()), installOnlyComponents);
     } catch (AmbariException e) {
       LOG.error("Cannot get cluster name for clusterId = " + getClusterId(), e);
       throw new RuntimeException(e);

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/Component.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/Component.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/Component.java
new file mode 100644
index 0000000..0dfad41
--- /dev/null
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/Component.java
@@ -0,0 +1,59 @@
+/**
+ * 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.
+ */
+
+package org.apache.ambari.server.topology;
+
+
+import org.apache.ambari.server.controller.internal.ProvisionAction;
+
+public class Component {
+
+  private final String name;
+
+  private final ProvisionAction provisionAction;
+
+  public Component(String name) {
+    this(name, null);
+  }
+
+
+  public Component(String name, ProvisionAction provisionAction) {
+    this.name = name;
+    this.provisionAction = provisionAction;
+  }
+
+  /**
+   * Gets the name of this component
+   *
+   * @return component name
+   */
+  public String getName() {
+    return this.name;
+  }
+
+  /**
+   * Gets the provision action associated with this component.
+   *
+   * @return the provision action for this component, which
+   *         may be null if the default action is to be used
+   */
+  public ProvisionAction getProvisionAction() {
+    return this.provisionAction;
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroup.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroup.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroup.java
index 07e3e88..c0aec68 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroup.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroup.java
@@ -18,6 +18,7 @@
 
 package org.apache.ambari.server.topology;
 
+import org.apache.ambari.server.controller.internal.ProvisionAction;
 import org.apache.ambari.server.controller.internal.Stack;
 import org.apache.ambari.server.orm.entities.HostGroupEntity;
 import org.apache.ambari.server.state.DependencyInfo;
@@ -55,9 +56,28 @@ public interface HostGroup {
   /**
    * Get all of the host group components.
    *
-   * @return collection of component names
+   * @return collection of component instances
    */
-  public Collection<String> getComponents();
+  public Collection<Component> getComponents();
+
+  /**
+   * Get all of the host group component names
+   *
+   * @return collection of component names as String
+   */
+  public Collection<String> getComponentNames();
+
+  /**
+   * Get all host group component names for instances
+   *   that have the specified provision action association.
+   *
+   * @param provisionAction the provision action that must be associated
+   *                          with the component names returned
+   *
+   * @return collection of component names as String that are associated with
+   *           the specified provision action
+   */
+  public Collection<String> getComponentNames(ProvisionAction provisionAction);
 
   /**
    * Get the host group components which belong to the specified service.
@@ -78,6 +98,16 @@ public interface HostGroup {
   public boolean addComponent(String component);
 
   /**
+   * Add a component to the host group, with the specified name
+   *   and provision action.
+   *
+   * @param component  component name
+   * @param provisionAction provision action for this component
+   * @return
+   */
+  public boolean addComponent(String component, ProvisionAction provisionAction);
+
+  /**
    * Determine if the host group contains a master component.
    *
    * @return true if the host group contains a master component; false otherwise

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroupImpl.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroupImpl.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroupImpl.java
index b89e7e4..ddbe0b3 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroupImpl.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/HostGroupImpl.java
@@ -20,6 +20,7 @@
 package org.apache.ambari.server.topology;
 
 import com.google.gson.Gson;
+import org.apache.ambari.server.controller.internal.ProvisionAction;
 import org.apache.ambari.server.controller.internal.Stack;
 import org.apache.ambari.server.orm.entities.HostGroupComponentEntity;
 import org.apache.ambari.server.orm.entities.HostGroupConfigEntity;
@@ -50,7 +51,7 @@ public class HostGroupImpl implements HostGroup {
   /**
    * components contained in the host group
    */
-  private Collection<String> components = new HashSet<String>();
+  private Map<String, Component> components = new HashMap<String, Component>();
 
   /**
    * map of service to components for the host group
@@ -78,21 +79,23 @@ public class HostGroupImpl implements HostGroup {
     parseConfigurations(entity);
   }
 
-  public HostGroupImpl(String name, String bpName, Stack stack, Collection<String> components, Configuration configuration, String cardinality) {
+  public HostGroupImpl(String name, String bpName, Stack stack, Collection<Component> components, Configuration configuration, String cardinality) {
     this.name = name;
     this.blueprintName = bpName;
     this.stack = stack;
 
     // process each component
-    for (String component : components) {
-      addComponent(component);
+    for (Component component : components) {
+      addComponent(component.getName(), component.getProvisionAction());
     }
+
     this.configuration = configuration;
     if (cardinality != null && ! cardinality.equals("null")) {
       this.cardinality = cardinality;
     }
   }
 
+
   @Override
   public String getName() {
     return name;
@@ -110,10 +113,29 @@ public class HostGroupImpl implements HostGroup {
   }
 
   @Override
-  public Collection<String> getComponents() {
-    return components;
+  public Collection<Component> getComponents() {
+    return components.values();
+  }
+
+  @Override
+  public Collection<String> getComponentNames() {
+    return components.keySet();
+  }
+
+  @Override
+  public Collection<String> getComponentNames(ProvisionAction provisionAction) {
+    Set<String> setOfComponentNames = new HashSet<String>();
+    for (String componentName : components.keySet()) {
+      Component component = components.get(componentName);
+      if ( (component.getProvisionAction() != null) && (component.getProvisionAction() == provisionAction) ) {
+        setOfComponentNames.add(componentName);
+      }
+    }
+
+    return setOfComponentNames;
   }
 
+
   /**
    * Get the services which are deployed to this host group.
    *
@@ -133,7 +155,27 @@ public class HostGroupImpl implements HostGroup {
    */
   @Override
   public boolean addComponent(String component) {
-    boolean added = components.add(component);
+    return this.addComponent(component, null);
+  }
+
+  /**
+   * Add a component with the specified provision action to the
+   *   host group.
+   *
+   * @param component  component name
+   * @param provisionAction provision action for this component
+   *
+   * @return true if component was added; false if component already existed
+   */
+  public boolean addComponent(String component, ProvisionAction provisionAction) {
+    boolean added;
+    if (!components.containsKey(component)) {
+      components.put(component, new Component(component, provisionAction));
+      added = true;
+    } else {
+      added = false;
+    }
+
     if (stack.isMasterComponent(component)) {
       containsMasterComponent = true;
     }
@@ -207,7 +249,13 @@ public class HostGroupImpl implements HostGroup {
    */
   private void parseComponents(HostGroupEntity entity) {
     for (HostGroupComponentEntity componentEntity : entity.getComponents() ) {
-      addComponent(componentEntity.getName());
+      if (componentEntity.getProvisionAction() != null) {
+        addComponent(componentEntity.getName(), ProvisionAction.valueOf(componentEntity.getProvisionAction()));
+      } else {
+        addComponent(componentEntity.getName());
+      }
+
+
     }
   }
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/HostRequest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/HostRequest.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/HostRequest.java
index 440638c..9eb514a 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/HostRequest.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/HostRequest.java
@@ -43,7 +43,7 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 
-import static org.apache.ambari.server.controller.internal.ProvisionClusterRequest.ProvisionAction.INSTALL_ONLY;
+import static org.apache.ambari.server.controller.internal.ProvisionAction.INSTALL_ONLY;
 
 /**
  * Represents a set of requests to a single host such as install, start, etc.
@@ -194,7 +194,7 @@ public class HostRequest implements Comparable<HostRequest> {
 
     // lower level logical component level tasks which get mapped to physical tasks
     HostGroup hostGroup = getHostGroup();
-    for (String component : hostGroup.getComponents()) {
+    for (String component : hostGroup.getComponentNames()) {
       if (component == null || component.equals("AMBARI_SERVER")) {
         LOG.info("Skipping component {} when creating request\n", component);
         continue;

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/LogicalRequest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/LogicalRequest.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/LogicalRequest.java
index bd9f2e0..ad7c8fd 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/LogicalRequest.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/LogicalRequest.java
@@ -188,7 +188,7 @@ public class LogicalRequest extends Request {
           hostComponents = new HashSet<String>();
           hostComponentMap.put(host, hostComponents);
         }
-        hostComponents.addAll(hostGroup.getComponents());
+        hostComponents.addAll(hostGroup.getComponentNames());
       }
     }
     return hostComponentMap;

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/topology/RequiredPasswordValidator.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/topology/RequiredPasswordValidator.java b/ambari-server/src/main/java/org/apache/ambari/server/topology/RequiredPasswordValidator.java
index e26de3f..98eaa40 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/topology/RequiredPasswordValidator.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/topology/RequiredPasswordValidator.java
@@ -81,7 +81,7 @@ public class RequiredPasswordValidator implements TopologyValidator {
       Stack stack = blueprint.getStack();
 
       HostGroup hostGroup = blueprint.getHostGroup(hostGroupName);
-      for (String component : hostGroup.getComponents()) {
+      for (String component : hostGroup.getComponentNames()) {
         //for now, AMBARI is not recognized as a service in Stacks
         if (component.equals("AMBARI_SERVER")) {
           continue;

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog221.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog221.java b/ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog221.java
index 5cde24b..9c947a1 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog221.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog221.java
@@ -27,6 +27,7 @@ import com.google.inject.Inject;
 import com.google.inject.Injector;
 import org.apache.ambari.server.AmbariException;
 import org.apache.ambari.server.controller.AmbariManagementController;
+import org.apache.ambari.server.orm.DBAccessor;
 import org.apache.ambari.server.orm.dao.AlertDefinitionDAO;
 import org.apache.ambari.server.orm.dao.DaoUtils;
 import org.apache.ambari.server.orm.entities.AlertDefinitionEntity;
@@ -76,6 +77,10 @@ public class UpgradeCatalog221 extends AbstractUpgradeCatalog {
   private static final String OLD_DEFAULT_HADOOP_CONFIG_PATH = "/etc/hadoop/conf";
   private static final String NEW_DEFAULT_HADOOP_CONFIG_PATH = "{{hadoop_conf_dir}}";
 
+  private static final String BLUEPRINT_HOSTGROUP_COMPONENT_TABLE_NAME = "hostgroup_component";
+  private static final String BLUEPRINT_PROVISION_ACTION_COLUMN_NAME = "provision_action";
+
+
 
   // ----- Constructors ------------------------------------------------------
 
@@ -118,6 +123,13 @@ public class UpgradeCatalog221 extends AbstractUpgradeCatalog {
     dbAccessor.createIndex("idx_hrc_request_id", "host_role_command", "request_id");
     dbAccessor.createIndex("idx_rsc_request_id", "role_success_criteria", "request_id");
 
+    executeBlueprintProvisionActionDDLUpdates();
+  }
+
+  private void executeBlueprintProvisionActionDDLUpdates() throws AmbariException, SQLException {
+    // add provision_action column to the hostgroup_component table for Blueprints
+    dbAccessor.addColumn(BLUEPRINT_HOSTGROUP_COMPONENT_TABLE_NAME, new DBAccessor.DBColumnInfo(BLUEPRINT_PROVISION_ACTION_COLUMN_NAME,
+      String.class, 255, null, true));
   }
 
   @Override

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/resources/Ambari-DDL-Derby-CREATE.sql
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/Ambari-DDL-Derby-CREATE.sql b/ambari-server/src/main/resources/Ambari-DDL-Derby-CREATE.sql
index d93a3c2..6eda26d 100644
--- a/ambari-server/src/main/resources/Ambari-DDL-Derby-CREATE.sql
+++ b/ambari-server/src/main/resources/Ambari-DDL-Derby-CREATE.sql
@@ -406,6 +406,7 @@ CREATE TABLE hostgroup_component (
   blueprint_name VARCHAR(255) NOT NULL,
   hostgroup_name VARCHAR(255) NOT NULL,
   name VARCHAR(255) NOT NULL,
+  provision_action VARCHAR(255),
   PRIMARY KEY(blueprint_name, hostgroup_name, name));
 
 CREATE TABLE blueprint_configuration (

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/resources/Ambari-DDL-MySQL-CREATE.sql
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/Ambari-DDL-MySQL-CREATE.sql b/ambari-server/src/main/resources/Ambari-DDL-MySQL-CREATE.sql
index aa8ced1..05f7c4c 100644
--- a/ambari-server/src/main/resources/Ambari-DDL-MySQL-CREATE.sql
+++ b/ambari-server/src/main/resources/Ambari-DDL-MySQL-CREATE.sql
@@ -414,6 +414,7 @@ CREATE TABLE hostgroup_component (
   blueprint_name VARCHAR(100) NOT NULL,
   hostgroup_name VARCHAR(100) NOT NULL,
   name VARCHAR(100) NOT NULL,
+  provision_action VARCHAR(100),
   PRIMARY KEY(blueprint_name, hostgroup_name, name));
 
 CREATE TABLE blueprint_configuration (

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/resources/Ambari-DDL-Oracle-CREATE.sql
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/Ambari-DDL-Oracle-CREATE.sql b/ambari-server/src/main/resources/Ambari-DDL-Oracle-CREATE.sql
index b534344..59fd773 100644
--- a/ambari-server/src/main/resources/Ambari-DDL-Oracle-CREATE.sql
+++ b/ambari-server/src/main/resources/Ambari-DDL-Oracle-CREATE.sql
@@ -405,6 +405,7 @@ CREATE TABLE hostgroup_component (
   blueprint_name VARCHAR2(255) NOT NULL,
   hostgroup_name VARCHAR2(255) NOT NULL,
   name VARCHAR2(255) NOT NULL,
+  provision_action VARCHAR2(255),
   PRIMARY KEY(blueprint_name, hostgroup_name, name));
 
 CREATE TABLE blueprint_configuration (

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/resources/Ambari-DDL-Postgres-CREATE.sql
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/Ambari-DDL-Postgres-CREATE.sql b/ambari-server/src/main/resources/Ambari-DDL-Postgres-CREATE.sql
index 941fc6e..24bf962 100644
--- a/ambari-server/src/main/resources/Ambari-DDL-Postgres-CREATE.sql
+++ b/ambari-server/src/main/resources/Ambari-DDL-Postgres-CREATE.sql
@@ -406,6 +406,7 @@ CREATE TABLE hostgroup_component (
   blueprint_name VARCHAR(255) NOT NULL,
   hostgroup_name VARCHAR(255) NOT NULL,
   name VARCHAR(255) NOT NULL,
+  provision_action VARCHAR(255),
   PRIMARY KEY(blueprint_name, hostgroup_name, name));
 
 CREATE TABLE blueprint_configuration (

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/resources/Ambari-DDL-Postgres-EMBEDDED-CREATE.sql
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/Ambari-DDL-Postgres-EMBEDDED-CREATE.sql b/ambari-server/src/main/resources/Ambari-DDL-Postgres-EMBEDDED-CREATE.sql
index dd517f8..705a241 100644
--- a/ambari-server/src/main/resources/Ambari-DDL-Postgres-EMBEDDED-CREATE.sql
+++ b/ambari-server/src/main/resources/Ambari-DDL-Postgres-EMBEDDED-CREATE.sql
@@ -453,6 +453,7 @@ CREATE TABLE ambari.hostgroup_component (
   blueprint_name VARCHAR(255) NOT NULL,
   hostgroup_name VARCHAR(255) NOT NULL,
   name VARCHAR(255) NOT NULL,
+  provision_action VARCHAR(255),
   PRIMARY KEY(blueprint_name, hostgroup_name, name));
 
 CREATE TABLE ambari.blueprint_configuration (

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/resources/Ambari-DDL-SQLAnywhere-CREATE.sql
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/Ambari-DDL-SQLAnywhere-CREATE.sql b/ambari-server/src/main/resources/Ambari-DDL-SQLAnywhere-CREATE.sql
index f837f9e..3bb7faf 100644
--- a/ambari-server/src/main/resources/Ambari-DDL-SQLAnywhere-CREATE.sql
+++ b/ambari-server/src/main/resources/Ambari-DDL-SQLAnywhere-CREATE.sql
@@ -403,6 +403,7 @@ CREATE TABLE hostgroup_component (
   blueprint_name VARCHAR(255) NOT NULL,
   hostgroup_name VARCHAR(255) NOT NULL,
   name VARCHAR(255) NOT NULL,
+  provision_action VARCHAR(255),
   PRIMARY KEY(blueprint_name, hostgroup_name, name));
 
 CREATE TABLE blueprint_configuration (

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/main/resources/Ambari-DDL-SQLServer-CREATE.sql
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/Ambari-DDL-SQLServer-CREATE.sql b/ambari-server/src/main/resources/Ambari-DDL-SQLServer-CREATE.sql
index 239d27e..89acb96 100644
--- a/ambari-server/src/main/resources/Ambari-DDL-SQLServer-CREATE.sql
+++ b/ambari-server/src/main/resources/Ambari-DDL-SQLServer-CREATE.sql
@@ -459,6 +459,7 @@ CREATE TABLE hostgroup_component (
   blueprint_name VARCHAR(255) NOT NULL,
   hostgroup_name VARCHAR(255) NOT NULL,
   NAME VARCHAR(255) NOT NULL,
+  provision_action VARCHAR(255),
   PRIMARY KEY CLUSTERED (
     blueprint_name,
     hostgroup_name,

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRendererTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRendererTest.java b/ambari-server/src/test/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRendererTest.java
index 522d902..1fe48df 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRendererTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRendererTest.java
@@ -40,6 +40,7 @@ import org.apache.ambari.server.state.ServiceInfo;
 import org.apache.ambari.server.topology.AmbariContext;
 import org.apache.ambari.server.topology.Blueprint;
 import org.apache.ambari.server.topology.ClusterTopology;
+import org.apache.ambari.server.topology.Component;
 import org.apache.ambari.server.topology.Configuration;
 import org.apache.ambari.server.topology.HostGroup;
 import org.apache.ambari.server.topology.HostGroupInfo;
@@ -115,10 +116,10 @@ public class ClusterBlueprintRendererTest {
     clusterAttributeProps.put("propertyOne", "true");
     clusterTypeAttributes.put("final", clusterAttributeProps);
 
-    Collection<String> group1Components = Arrays.asList(
-        "JOBTRACKER", "TASKTRACKER", "NAMENODE", "DATANODE", "AMBARI_SERVER");
+    Collection<Component> group1Components = Arrays.asList(
+        new Component("JOBTRACKER"), new Component("TASKTRACKER"), new Component("NAMENODE"), new Component("DATANODE"), new Component("AMBARI_SERVER"));
 
-    Collection<String> group2Components = Arrays.asList("TASKTRACKER", "DATANODE");
+    Collection<Component> group2Components = Arrays.asList(new Component("TASKTRACKER"), new Component("DATANODE"));
 
     Map<String, Configuration> hostGroupConfigs = new HashMap<String, Configuration>();
     hostGroupConfigs.put("host_group_1", emptyConfiguration);

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessorTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessorTest.java b/ambari-server/src/test/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessorTest.java
index 514e6ab..d5531a6 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessorTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/api/services/stackadvisor/StackAdvisorBlueprintProcessorTest.java
@@ -20,9 +20,9 @@ package org.apache.ambari.server.api.services.stackadvisor;
 
 import com.google.common.collect.Maps;
 import org.apache.ambari.server.controller.internal.ConfigurationTopologyException;
+import org.apache.ambari.server.topology.Component;
 import org.apache.ambari.server.topology.Configuration;
 import org.apache.ambari.server.topology.HostGroup;
-import org.apache.ambari.server.topology.HostGroupImpl;
 import static org.easymock.EasyMock.anyObject;
 import static org.easymock.EasyMock.createMock;
 import static org.easymock.EasyMock.expect;
@@ -81,7 +81,7 @@ public class StackAdvisorBlueprintProcessorTest {
     expect(stack.getName()).andReturn("HDP").anyTimes();
     expect(blueprint.getServices()).andReturn(Arrays.asList("HDFS", "YARN", "HIVE")).anyTimes();
     expect(blueprint.getHostGroups()).andReturn(createHostGroupMap()).anyTimes();
-    expect(hostGroup.getComponents()).andReturn(Arrays.asList("comp1", "comp2")).anyTimes();
+    expect(hostGroup.getComponentNames()).andReturn(Arrays.asList("comp1", "comp2")).anyTimes();
     expect(stackAdvisorHelper.recommend(anyObject(StackAdvisorRequest.class))).andReturn(createRecommendationResponse());
     expect(configuration.getFullProperties()).andReturn(createProps());
 
@@ -108,7 +108,7 @@ public class StackAdvisorBlueprintProcessorTest {
     expect(stack.getVersion()).andReturn("2.3").anyTimes();
     expect(stack.getName()).andReturn("HDP").anyTimes();
     expect(blueprint.getHostGroups()).andReturn(createHostGroupMap()).anyTimes();
-    expect(hostGroup.getComponents()).andReturn(Arrays.asList("comp1", "comp2")).anyTimes();
+    expect(hostGroup.getComponentNames()).andReturn(Arrays.asList("comp1", "comp2")).anyTimes();
     expect(blueprint.getServices()).andReturn(Arrays.asList("HDFS", "YARN", "HIVE")).anyTimes();
     expect(stackAdvisorHelper.recommend(anyObject(StackAdvisorRequest.class))).andThrow(new StackAdvisorException("ex"));
     expect(configuration.getFullProperties()).andReturn(createProps());
@@ -136,7 +136,7 @@ public class StackAdvisorBlueprintProcessorTest {
     expect(stack.getName()).andReturn("HDP").anyTimes();
     expect(blueprint.getServices()).andReturn(Arrays.asList("HDFS", "YARN", "HIVE")).anyTimes();
     expect(blueprint.getHostGroups()).andReturn(createHostGroupMap()).anyTimes();
-    expect(hostGroup.getComponents()).andReturn(Arrays.asList("comp1", "comp2")).anyTimes();
+    expect(hostGroup.getComponentNames()).andReturn(Arrays.asList("comp1", "comp2")).anyTimes();
     expect(stackAdvisorHelper.recommend(anyObject(StackAdvisorRequest.class))).andReturn(new RecommendationResponse());
     expect(configuration.getFullProperties()).andReturn(createProps());
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessorTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessorTest.java b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessorTest.java
index 0384b45..ab6913e 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessorTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessorTest.java
@@ -32,6 +32,7 @@ import org.apache.ambari.server.topology.Blueprint;
 import org.apache.ambari.server.topology.Cardinality;
 import org.apache.ambari.server.topology.ClusterTopology;
 import org.apache.ambari.server.topology.ClusterTopologyImpl;
+import org.apache.ambari.server.topology.Component;
 import org.apache.ambari.server.topology.ConfigRecommendationStrategy;
 import org.apache.ambari.server.topology.Configuration;
 import org.apache.ambari.server.topology.HostGroup;
@@ -6393,9 +6394,14 @@ public class BlueprintConfigurationProcessorTest {
       //todo: HG configs
       groupInfo.setConfiguration(hostGroup.configuration);
 
+      List<Component> componentList = new ArrayList<Component>();
+      for (String componentName : hostGroup.components) {
+        componentList.add(new Component(componentName));
+      }
+
       //create host group which is set on topology
       allHostGroups.put(hostGroup.name, new HostGroupImpl(hostGroup.name, "test-bp", stack,
-          hostGroup.components, EMPTY_CONFIG, "1"));
+          componentList, EMPTY_CONFIG, "1"));
 
       hostGroupInfo.put(hostGroup.name, groupInfo);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequestTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequestTest.java b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequestTest.java
index 94ba90f..7f37814 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequestTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ExportBlueprintRequestTest.java
@@ -129,7 +129,7 @@ public class ExportBlueprintRequestTest {
     String hg1Name = null;
     String hg2Name = null;
     for (HostGroup group : hostGroups.values()) {
-      Collection<String> components = group.getComponents();
+      Collection<String> components = group.getComponentNames();
       if (components.containsAll(host1ComponentsList)) {
         assertEquals(host1ComponentsList.size(), components.size());
         assertEquals("1", group.getCardinality());

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityTest.java b/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityTest.java
index c0efd0d..f3104e8 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostGroupComponentEntityTest.java
@@ -55,4 +55,12 @@ public class HostGroupComponentEntityTest {
     entity.setBlueprintName("foo");
     assertEquals("foo", entity.getBlueprintName());
   }
+
+  @Test
+  public void testSetGetProvisionAction() {
+    HostGroupComponentEntity entity = new HostGroupComponentEntity();
+    entity.setProvisionAction("INSTALL_ONLY");
+    assertEquals("INSTALL_ONLY", entity.getProvisionAction());
+  }
+
 }

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintFactoryTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintFactoryTest.java b/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintFactoryTest.java
index 3a3b6dc..5e2085b 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintFactoryTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintFactoryTest.java
@@ -130,7 +130,7 @@ public class BlueprintFactoryTest {
     HostGroup group1 = hostGroups.get("group1");
     assertEquals("group1", group1.getName());
     assertEquals("1", group1.getCardinality());
-    Collection<String> components = group1.getComponents();
+    Collection<String> components = group1.getComponentNames();
     assertEquals(2, components.size());
     assertTrue(components.contains("component1"));
     assertTrue(components.contains("component2"));
@@ -147,7 +147,7 @@ public class BlueprintFactoryTest {
     HostGroup group2 = hostGroups.get("group2");
     assertEquals("group2", group2.getName());
     assertEquals("2", group2.getCardinality());
-    components = group2.getComponents();
+    components = group2.getComponentNames();
     assertEquals(1, components.size());
     assertTrue(components.contains("component1"));
     services = group2.getServices();

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintImplTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintImplTest.java b/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintImplTest.java
index 3addfc4..0b06eb8 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintImplTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintImplTest.java
@@ -23,16 +23,14 @@ import org.apache.ambari.server.orm.entities.BlueprintEntity;
 import org.apache.ambari.server.state.SecurityType;
 import org.junit.Test;
 
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
 
-import static org.easymock.EasyMock.createNiceMock;
-import static org.easymock.EasyMock.expect;
-import static org.easymock.EasyMock.replay;
-import static org.easymock.EasyMock.verify;
+import static org.easymock.EasyMock.*;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
@@ -56,13 +54,13 @@ public class BlueprintImplTest {
 
     Stack stack = createNiceMock(Stack.class);
 
-    HostGroup group1 = createNiceMock(HostGroup.class);
-    HostGroup group2 = createNiceMock(HostGroup.class);
+    HostGroup group1 = createMock(HostGroup.class);
+    HostGroup group2 = createMock(HostGroup.class);
     Collection<HostGroup> hostGroups = new HashSet<HostGroup>();
     hostGroups.add(group1);
     hostGroups.add(group2);
 
-    Set<String> group1Components = new HashSet<String>();
+    Collection<String> group1Components = new HashSet<String>();
     group1Components.add("c1");
     group1Components.add("c2");
 
@@ -95,11 +93,15 @@ public class BlueprintImplTest {
 
     expect(group1.getConfiguration()).andReturn(EMPTY_CONFIGURATION).atLeastOnce();
     expect(group1.getName()).andReturn("group1").anyTimes();
-    expect(group1.getComponents()).andReturn(group1Components).atLeastOnce();
+    expect(group1.getComponentNames()).andReturn(group1Components).atLeastOnce();
+    expect(group1.getCardinality()).andReturn("1").atLeastOnce();
+    expect(group1.getComponents()).andReturn(Arrays.asList(new Component("c1"), new Component("c2"))).atLeastOnce();
 
     expect(group2.getConfiguration()).andReturn(EMPTY_CONFIGURATION).atLeastOnce();
     expect(group2.getName()).andReturn("group2").anyTimes();
-    expect(group2.getComponents()).andReturn(group2Components).atLeastOnce();
+    expect(group2.getComponentNames()).andReturn(group2Components).atLeastOnce();
+    expect(group2.getCardinality()).andReturn("1").atLeastOnce();
+    expect(group2.getComponents()).andReturn(Arrays.asList(new Component("c1"), new Component("c3"))).atLeastOnce();
 
     replay(stack, group1, group2);
 
@@ -143,11 +145,11 @@ public class BlueprintImplTest {
     hostGroups.add(group1);
     hostGroups.add(group2);
 
-    Set<String> group1Components = new HashSet<String>();
+    Collection<String> group1Components = new HashSet<String>();
     group1Components.add("c1");
     group1Components.add("c2");
 
-    Set<String> group2Components = new HashSet<String>();
+    Collection<String> group2Components = new HashSet<String>();
     group2Components.add("c1");
     group2Components.add("c3");
 
@@ -176,11 +178,11 @@ public class BlueprintImplTest {
 
     expect(group1.getConfiguration()).andReturn(EMPTY_CONFIGURATION).atLeastOnce();
     expect(group1.getName()).andReturn("group1").anyTimes();
-    expect(group1.getComponents()).andReturn(group1Components).atLeastOnce();
+    expect(group1.getComponentNames()).andReturn(group1Components).atLeastOnce();
 
     expect(group2.getConfiguration()).andReturn(EMPTY_CONFIGURATION).atLeastOnce();
     expect(group2.getName()).andReturn("group2").anyTimes();
-    expect(group2.getComponents()).andReturn(group2Components).atLeastOnce();
+    expect(group2.getComponentNames()).andReturn(group2Components).atLeastOnce();
 
     replay(stack, group1, group2);
 
@@ -214,8 +216,8 @@ public class BlueprintImplTest {
 
     Stack stack = createNiceMock(Stack.class);
 
-    HostGroup group1 = createNiceMock(HostGroup.class);
-    HostGroup group2 = createNiceMock(HostGroup.class);
+    HostGroup group1 = createMock(HostGroup.class);
+    HostGroup group2 = createMock(HostGroup.class);
     Collection<HostGroup> hostGroups = new HashSet<HostGroup>();
     hostGroups.add(group1);
     hostGroups.add(group2);
@@ -258,10 +260,14 @@ public class BlueprintImplTest {
 
     expect(group1.getConfiguration()).andReturn(EMPTY_CONFIGURATION).atLeastOnce();
     expect(group1.getName()).andReturn("group1").anyTimes();
-    expect(group1.getComponents()).andReturn(group1Components).atLeastOnce();
+    expect(group1.getComponentNames()).andReturn(group1Components).atLeastOnce();
+    expect(group1.getCardinality()).andReturn("1").atLeastOnce();
+    expect(group1.getComponents()).andReturn(Arrays.asList(new Component("c1"), new Component("c2"))).atLeastOnce();
 
     expect(group2.getName()).andReturn("group2").anyTimes();
-    expect(group2.getComponents()).andReturn(group2Components).atLeastOnce();
+    expect(group2.getComponentNames()).andReturn(group2Components).atLeastOnce();
+    expect(group2.getCardinality()).andReturn("1").atLeastOnce();
+    expect(group2.getComponents()).andReturn(Arrays.asList(new Component("c1"), new Component("c3"))).atLeastOnce();
 
     // Blueprint config
     Map<String, Map<String, String>> properties = new HashMap<String, Map<String, String>>();

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintValidatorImplTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintValidatorImplTest.java b/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintValidatorImplTest.java
index 304cded..f78d86d 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintValidatorImplTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/topology/BlueprintValidatorImplTest.java
@@ -75,8 +75,8 @@ public class BlueprintValidatorImplTest{
     expect(blueprint.getHostGroups()).andReturn(hostGroups).anyTimes();
     expect(blueprint.getServices()).andReturn(services).anyTimes();
 
-    expect(group1.getComponents()).andReturn(group1Components).anyTimes();
-    expect(group2.getComponents()).andReturn(group2Components).anyTimes();
+    expect(group1.getComponentNames()).andReturn(group1Components).anyTimes();
+    expect(group2.getComponentNames()).andReturn(group2Components).anyTimes();
 
     expect(stack.getDependenciesForComponent("component1")).andReturn(dependencies1).anyTimes();
     expect(stack.getDependenciesForComponent("component2")).andReturn(dependencies1).anyTimes();
@@ -98,7 +98,7 @@ public class BlueprintValidatorImplTest{
   @Test
   public void testValidateTopology_basic() throws Exception {
     group1Components.add("component1");
-    group1Components.add("component2");
+    group1Components.add("component1");
 
     services.addAll(Arrays.asList("service1", "service2"));
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterInstallWithoutStartTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterInstallWithoutStartTest.java b/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterInstallWithoutStartTest.java
index 1354a72..dd66b1b 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterInstallWithoutStartTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterInstallWithoutStartTest.java
@@ -60,7 +60,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Future;
-import static org.apache.ambari.server.controller.internal.ProvisionClusterRequest.ProvisionAction.INSTALL_ONLY;
+import static org.apache.ambari.server.controller.internal.ProvisionAction.INSTALL_ONLY;
 import static org.easymock.EasyMock.anyLong;
 import static org.easymock.EasyMock.anyObject;
 import static org.easymock.EasyMock.anyString;
@@ -269,7 +269,7 @@ public class ClusterInstallWithoutStartTest {
     expect(group1.getBlueprintName()).andReturn(BLUEPRINT_NAME).anyTimes();
     expect(group1.getCardinality()).andReturn("test cardinality").anyTimes();
     expect(group1.containsMasterComponent()).andReturn(true).anyTimes();
-    expect(group1.getComponents()).andReturn(group1Components).anyTimes();
+    expect(group1.getComponentNames()).andReturn(group1Components).anyTimes();
     expect(group1.getComponents("service1")).andReturn(group1ServiceComponents.get("service1")).anyTimes();
     expect(group1.getComponents("service2")).andReturn(group1ServiceComponents.get("service1")).anyTimes();
     expect(group1.getConfiguration()).andReturn(topoGroup1Config).anyTimes();
@@ -280,7 +280,7 @@ public class ClusterInstallWithoutStartTest {
     expect(group2.getBlueprintName()).andReturn(BLUEPRINT_NAME).anyTimes();
     expect(group2.getCardinality()).andReturn("test cardinality").anyTimes();
     expect(group2.containsMasterComponent()).andReturn(false).anyTimes();
-    expect(group2.getComponents()).andReturn(group2Components).anyTimes();
+    expect(group2.getComponentNames()).andReturn(group2Components).anyTimes();
     expect(group2.getComponents("service1")).andReturn(group2ServiceComponents.get("service1")).anyTimes();
     expect(group2.getComponents("service2")).andReturn(group2ServiceComponents.get("service2")).anyTimes();
     expect(group2.getConfiguration()).andReturn(topoGroup2Config).anyTimes();

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterTopologyImplTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterTopologyImplTest.java b/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterTopologyImplTest.java
index 08aa3d3..7c68482 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterTopologyImplTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterTopologyImplTest.java
@@ -98,15 +98,15 @@ public class ClusterTopologyImplTest {
     hostGroupMap.put("group3", group3);
     hostGroupMap.put("group4", group4);
 
-    Set<String> group1Components = new HashSet<String>();
-    group1Components.add("component1");
-    group1Components.add("component2");
-    Set<String> group2Components = new HashSet<String>();
-    group2Components.add("component3");
-    Set<String> group3Components = new HashSet<String>();
-    group3Components.add("component4");
-    Set<String> group4Components = new HashSet<String>();
-    group4Components.add("component5");
+    Set<Component> group1Components = new HashSet<Component>();
+    group1Components.add(new Component("component1"));
+    group1Components.add(new Component("component2"));
+    Set<Component> group2Components = new HashSet<Component>();
+    group2Components.add(new Component("component3"));
+    Set<Component> group3Components = new HashSet<Component>();
+    group3Components.add(new Component("component4"));
+    Set<Component> group4Components = new HashSet<Component>();
+    group4Components.add(new Component("component5"));
 
     expect(blueprint.getHostGroups()).andReturn(hostGroupMap).anyTimes();
     expect(blueprint.getHostGroup("group1")).andReturn(group1).anyTimes();

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/topology/RequiredPasswordValidatorTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/topology/RequiredPasswordValidatorTest.java b/ambari-server/src/test/java/org/apache/ambari/server/topology/RequiredPasswordValidatorTest.java
index f4ded70..e8a2ff5 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/topology/RequiredPasswordValidatorTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/topology/RequiredPasswordValidatorTest.java
@@ -130,8 +130,8 @@ public class RequiredPasswordValidatorTest {
     expect(blueprint.getHostGroup("group2")).andReturn(group2).anyTimes();
     expect(blueprint.getStack()).andReturn(stack).anyTimes();
 
-    expect(group1.getComponents()).andReturn(group1Components).anyTimes();
-    expect(group2.getComponents()).andReturn(group2Components).anyTimes();
+    expect(group1.getComponentNames()).andReturn(group1Components).anyTimes();
+    expect(group2.getComponentNames()).andReturn(group2Components).anyTimes();
     expect(group1.getComponents("service1")).andReturn(Arrays.asList("component1", "component2")).anyTimes();
     expect(group1.getComponents("service2")).andReturn(Arrays.asList("component3")).anyTimes();
     expect(group1.getComponents("service3")).andReturn(Collections.<String>emptySet()).anyTimes();

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/topology/TopologyManagerTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/topology/TopologyManagerTest.java b/ambari-server/src/test/java/org/apache/ambari/server/topology/TopologyManagerTest.java
index 47169f4..7810f92 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/topology/TopologyManagerTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/topology/TopologyManagerTest.java
@@ -142,8 +142,8 @@ public class TopologyManagerTest {
   private HostGroupInfo group2Info = new HostGroupInfo("group2");
   private Map<String, HostGroupInfo> groupInfoMap = new HashMap<String, HostGroupInfo>();
 
-  private Collection<String> group1Components = Arrays.asList("component1", "component2", "component3");
-  private Collection<String> group2Components = Arrays.asList("component3", "component4");
+  private Collection<Component> group1Components = Arrays.asList(new Component("component1"), new Component("component2"), new Component("component3"));
+  private Collection<Component> group2Components = Arrays.asList(new Component("component3"), new Component("component4"));
 
   private Map<String, Collection<String>> group1ServiceComponents = new HashMap<String, Collection<String>>();
   private Map<String, Collection<String>> group2ServiceComponents = new HashMap<String, Collection<String>>();

http://git-wip-us.apache.org/repos/asf/ambari/blob/6d06814f/ambari-server/src/test/java/org/apache/ambari/server/upgrade/UpgradeCatalog221Test.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/upgrade/UpgradeCatalog221Test.java b/ambari-server/src/test/java/org/apache/ambari/server/upgrade/UpgradeCatalog221Test.java
index 319024b..49484c1 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/upgrade/UpgradeCatalog221Test.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/upgrade/UpgradeCatalog221Test.java
@@ -59,20 +59,9 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.easymock.EasyMock.capture;
-import static org.easymock.EasyMock.createMockBuilder;
-import static org.easymock.EasyMock.createNiceMock;
-import static org.easymock.EasyMock.createStrictMock;
-import static org.easymock.EasyMock.eq;
-import static org.easymock.EasyMock.expect;
-import static org.easymock.EasyMock.expectLastCall;
-import static org.easymock.EasyMock.replay;
-import static org.easymock.EasyMock.reset;
-import static org.easymock.EasyMock.verify;
-import static org.easymock.EasyMock.anyObject;
-import static org.easymock.EasyMock.anyString;
-import static org.easymock.EasyMock.capture;
+import static org.easymock.EasyMock.*;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 
 public class UpgradeCatalog221Test {
@@ -114,6 +103,10 @@ public class UpgradeCatalog221Test {
     dbAccessor.createIndex(eq("idx_rsc_request_id"), eq("role_success_criteria"), eq("request_id"));
     expectLastCall().once();
 
+    Capture<DBAccessor.DBColumnInfo> capturedHostGroupComponentProvisionColumn = EasyMock.newCapture();
+    dbAccessor.addColumn(eq("hostgroup_component"), capture(capturedHostGroupComponentProvisionColumn));
+    expectLastCall().once();
+
 
     replay(dbAccessor);
     Module module = new Module() {
@@ -128,6 +121,15 @@ public class UpgradeCatalog221Test {
     Injector injector = Guice.createInjector(module);
     UpgradeCatalog221 upgradeCatalog221 = injector.getInstance(UpgradeCatalog221.class);
     upgradeCatalog221.executeDDLUpdates();
+
+    // verify that the column was added for provision_action to the hostgroup_component table
+    assertEquals("Incorrect column name added", "provision_action", capturedHostGroupComponentProvisionColumn.getValue().getName());
+    assertNull("Incorrect default value added", capturedHostGroupComponentProvisionColumn.getValue().getDefaultValue());
+    assertEquals("Incorrect column type added", String.class, capturedHostGroupComponentProvisionColumn.getValue().getType());
+    assertEquals("Incorrect column length added", 255, capturedHostGroupComponentProvisionColumn.getValue().getLength().intValue());
+    assertTrue("Incorrect column nullable state added", capturedHostGroupComponentProvisionColumn.getValue().isNullable());
+
+
     verify(dbAccessor);
   }
 


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