http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserPrivilegeResourceProviderTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserPrivilegeResourceProviderTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserPrivilegeResourceProviderTest.java
index 9ccbc11..54726df 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserPrivilegeResourceProviderTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserPrivilegeResourceProviderTest.java
@@ -42,7 +42,6 @@ import org.apache.ambari.server.orm.dao.PrivilegeDAO;
 import org.apache.ambari.server.orm.dao.UserDAO;
 import org.apache.ambari.server.orm.dao.ViewInstanceDAO;
 import org.apache.ambari.server.orm.entities.ClusterEntity;
-import org.apache.ambari.server.orm.entities.MemberEntity;
 import org.apache.ambari.server.orm.entities.PermissionEntity;
 import org.apache.ambari.server.orm.entities.PrincipalEntity;
 import org.apache.ambari.server.orm.entities.PrincipalTypeEntity;
@@ -391,7 +390,7 @@ public class UserPrivilegeResourceProviderTest extends 
AbstractPrivilegeResource
     final UserDAO userDAO = createNiceMock(UserDAO.class);
     
expect(userDAO.findLocalUserByName("jdoe")).andReturn(userEntity).anyTimes();
     
expect(userDAO.findUserByPrincipal(anyObject(PrincipalEntity.class))).andReturn(userEntity).anyTimes();
-    
expect(userDAO.findAll()).andReturn(Collections.<UserEntity>emptyList()).anyTimes();
+    expect(userDAO.findAll()).andReturn(Collections.emptyList()).anyTimes();
 
     final PrivilegeDAO privilegeDAO = createMock(PrivilegeDAO.class);
     final MemberDAO memberDAO = createMock(MemberDAO.class);
@@ -414,7 +413,7 @@ public class UserPrivilegeResourceProviderTest extends 
AbstractPrivilegeResource
         andReturn(Collections.singletonList(implicitPrivilegeEntity))
         .once();
     expect(memberDAO.findAllMembersByUser(userEntity)).
-        andReturn(Collections.<MemberEntity>emptyList())
+        andReturn(Collections.emptyList())
         .atLeastOnce();
 
     replayAll();
@@ -469,12 +468,12 @@ public class UserPrivilegeResourceProviderTest extends 
AbstractPrivilegeResource
         andReturn(Collections.singletonList(privilegeEntity))
         .atLeastOnce();
     expect(memberDAO.findAllMembersByUser(userEntity)).
-        andReturn(Collections.<MemberEntity>emptyList())
+        andReturn(Collections.emptyList())
         .atLeastOnce();
     
expect(userDAO.findLocalUserByName(requestedUsername)).andReturn(userEntity).anyTimes();
-    
expect(userDAO.findAll()).andReturn(Collections.<UserEntity>emptyList()).anyTimes();
+    expect(userDAO.findAll()).andReturn(Collections.emptyList()).anyTimes();
     expect(userEntity.getPrincipal()).andReturn(principalEntity).anyTimes();
-    
expect(userEntity.getMemberEntities()).andReturn(Collections.<MemberEntity>emptySet()).anyTimes();
+    
expect(userEntity.getMemberEntities()).andReturn(Collections.emptySet()).anyTimes();
     
expect(privilegeEntity.getPermission()).andReturn(permissionEntity).anyTimes();
     
expect(privilegeEntity.getPrincipal()).andReturn(principalEntity).anyTimes();
     
expect(principalEntity.getPrincipalType()).andReturn(principalTypeEntity).anyTimes();
@@ -489,7 +488,7 @@ public class UserPrivilegeResourceProviderTest extends 
AbstractPrivilegeResource
     expect(privilegeEntity.getResource()).andReturn(resourceEntity).anyTimes();
     
expect(resourceEntity.getResourceType()).andReturn(resourceTypeEntity).anyTimes();
     expect(resourceTypeEntity.getName()).andReturn(ResourceType.AMBARI.name());
-    expect(viewInstanceDAO.findAll()).andReturn(new 
ArrayList<ViewInstanceEntity>()).anyTimes();
+    expect(viewInstanceDAO.findAll()).andReturn(new ArrayList<>()).anyTimes();
 
     replayAll();
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserResourceProviderTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserResourceProviderTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserResourceProviderTest.java
index d298b7f..9efad8a 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserResourceProviderTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/UserResourceProviderTest.java
@@ -532,7 +532,7 @@ public class UserResourceProviderTest extends 
EasyMockSupport {
     expect(user.isLdapUser()).andReturn(false).anyTimes();
     expect(user.isActive()).andReturn(true).anyTimes();
     expect(user.isAdmin()).andReturn(false).anyTimes();
-    
expect(user.getGroups()).andReturn(Collections.<String>emptyList()).anyTimes();
+    expect(user.getGroups()).andReturn(Collections.emptyList()).anyTimes();
 
     return user;
   }

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewInstanceResourceProviderTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewInstanceResourceProviderTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewInstanceResourceProviderTest.java
index 60f416f..3d967d8 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewInstanceResourceProviderTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewInstanceResourceProviderTest.java
@@ -46,7 +46,6 @@ import 
org.apache.ambari.server.controller.spi.ResourceAlreadyExistsException;
 import org.apache.ambari.server.controller.utilities.PredicateBuilder;
 import org.apache.ambari.server.controller.utilities.PropertyHelper;
 import org.apache.ambari.server.orm.entities.ViewEntity;
-import org.apache.ambari.server.orm.entities.ViewInstanceDataEntity;
 import org.apache.ambari.server.orm.entities.ViewInstanceEntity;
 import org.apache.ambari.server.security.TestAuthenticationFactory;
 import org.apache.ambari.server.security.authorization.AuthorizationException;
@@ -97,7 +96,7 @@ public class ViewInstanceResourceProviderTest {
 
     expect(viewInstanceEntity.getPropertyMap()).andReturn(propertyMap);
 
-    
expect(viewInstanceEntity.getData()).andReturn(Collections.<ViewInstanceDataEntity>emptyList()).anyTimes();
+    
expect(viewInstanceEntity.getData()).andReturn(Collections.emptyList()).anyTimes();
 
     expect(viewregistry.checkAdmin()).andReturn(true);
     expect(viewregistry.checkAdmin()).andReturn(false);

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewURLResourceProviderTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewURLResourceProviderTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewURLResourceProviderTest.java
index 9891a7b..8a2af27 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewURLResourceProviderTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ViewURLResourceProviderTest.java
@@ -142,7 +142,7 @@ public class ViewURLResourceProviderTest {
     expect(viewEntity.getVersion()).andReturn("1.0.0").once();
     expect(viewInstanceEntity.getName()).andReturn("test").once();
     expect(viewInstanceEntity.getViewUrl()).andReturn(null).once();
-    
expect(viewURLDAO.findByName("test")).andReturn(Optional.<ViewURLEntity>absent());
+    expect(viewURLDAO.findByName("test")).andReturn(Optional.absent());
     Capture<ViewURLEntity> urlEntityCapture = newCapture();
     viewURLDAO.save(capture(urlEntityCapture));
     viewregistry.updateViewInstance(viewInstanceEntity);

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/WidgetLayoutResourceProviderTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/WidgetLayoutResourceProviderTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/WidgetLayoutResourceProviderTest.java
index 38e4838..40d949e 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/WidgetLayoutResourceProviderTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/WidgetLayoutResourceProviderTest.java
@@ -164,7 +164,7 @@ public class WidgetLayoutResourceProviderTest {
 
     WidgetEntity widgetEntity = new WidgetEntity();
     widgetEntity.setId(1l);
-    widgetEntity.setListWidgetLayoutUserWidgetEntity(new 
ArrayList<WidgetLayoutUserWidgetEntity>());
+    widgetEntity.setListWidgetLayoutUserWidgetEntity(new ArrayList<>());
     expect(widgetDAO.findById(anyLong())).andReturn(widgetEntity).anyTimes();
 
     replay(amc, clusters, cluster, dao, widgetDAO);
@@ -224,10 +224,10 @@ public class WidgetLayoutResourceProviderTest {
 
     WidgetEntity widgetEntity = new WidgetEntity();
     widgetEntity.setId(1L);
-    widgetEntity.setListWidgetLayoutUserWidgetEntity(new 
ArrayList<WidgetLayoutUserWidgetEntity>());
+    widgetEntity.setListWidgetLayoutUserWidgetEntity(new ArrayList<>());
     WidgetEntity widgetEntity2 = new WidgetEntity();
     widgetEntity2.setId(2L);
-    widgetEntity2.setListWidgetLayoutUserWidgetEntity(new 
ArrayList<WidgetLayoutUserWidgetEntity>());
+    widgetEntity2.setListWidgetLayoutUserWidgetEntity(new ArrayList<>());
     expect(widgetDAO.findById(1L)).andReturn(widgetEntity).atLeastOnce();
 
     replay(amc, clusters, cluster, dao, widgetDAO);

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LogSearchDataRetrievalServiceTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LogSearchDataRetrievalServiceTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LogSearchDataRetrievalServiceTest.java
index 8444923..de4c354 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LogSearchDataRetrievalServiceTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LogSearchDataRetrievalServiceTest.java
@@ -558,7 +558,7 @@ public class LogSearchDataRetrievalServiceTest {
 
     expect(helperFactoryMock.getHelper(controllerMock, 
expectedClusterName)).andReturn(helperMock);
     // return null to simulate an error occurring during the LogSearch data 
request
-    expect(helperMock.sendGetLogFileNamesRequest(expectedComponentName, 
expectedHostName)).andReturn(Collections.<String>emptySet());
+    expect(helperMock.sendGetLogFileNamesRequest(expectedComponentName, 
expectedHostName)).andReturn(Collections.emptySet());
     // expect that the completed request is removed from the current request 
set,
     // even in the event of a failure to obtain the LogSearch data
     
expect(currentRequestsMock.remove(expectedComponentAndHostName)).andReturn(true).once();

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperFactoryImplTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperFactoryImplTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperFactoryImplTest.java
index adc79b4..7c7bd84 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperFactoryImplTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperFactoryImplTest.java
@@ -199,7 +199,7 @@ public class LoggingRequestHelperFactoryImplTest {
     expect(controllerMock.getClusters()).andReturn(clustersMock).atLeastOnce();
     
expect(clustersMock.getCluster(expectedClusterName)).andReturn(clusterMock).atLeastOnce();
     
expect(clusterMock.getDesiredConfigByType("logsearch-properties")).andReturn(logSearchEnvConfig).atLeastOnce();
-    expect(clusterMock.getServiceComponentHosts("LOGSEARCH", 
"LOGSEARCH_SERVER")).andReturn(Collections.<ServiceComponentHost>emptyList()).atLeastOnce();
+    expect(clusterMock.getServiceComponentHosts("LOGSEARCH", 
"LOGSEARCH_SERVER")).andReturn(Collections.emptyList()).atLeastOnce();
     
expect(clusterMock.getServices()).andReturn(Collections.singletonMap("LOGSEARCH",
 (Service)null)).atLeastOnce();
 
     mockSupport.replayAll();

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperImplTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperImplTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperImplTest.java
index 55c730a..1f67337 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperImplTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/logging/LoggingRequestHelperImplTest.java
@@ -168,7 +168,7 @@ public class LoggingRequestHelperImplTest {
 
     // invoke query request
     LogQueryResponse result =
-      helper.sendQueryRequest(Collections.<String,String>emptyMap());
+      helper.sendQueryRequest(Collections.emptyMap());
 
     // verify that the HttpURLConnection was created with the proper values
     HttpURLConnection httpURLConnection =
@@ -508,7 +508,7 @@ public class LoggingRequestHelperImplTest {
 
     
expect(clusterMock.getDesiredConfigByType("logsearch-admin-json")).andReturn(adminPropertiesConfigMock).atLeastOnce();
     
expect(clusterMock.getClusterName()).andReturn(expectedClusterName).atLeastOnce();
-    
expect(adminPropertiesConfigMock.getProperties()).andReturn(Collections.<String,
 String>emptyMap()).atLeastOnce();
+    
expect(adminPropertiesConfigMock.getProperties()).andReturn(Collections.emptyMap()).atLeastOnce();
     
expect(networkConnectionMock.readQueryResponseFromServer(capture(captureURLConnection))).andReturn(new
 StringBuffer(TEST_JSON_INPUT_TWO_LIST_ENTRIES)).atLeastOnce();
     // the credential store service should be consulted in this case, in order
     // to attempt to obtain the LogSearch credential from the store
@@ -524,7 +524,7 @@ public class LoggingRequestHelperImplTest {
 
     // invoke query request
     LogQueryResponse result =
-      helper.sendQueryRequest(Collections.<String,String>emptyMap());
+      helper.sendQueryRequest(Collections.emptyMap());
 
     // verify that the HttpURLConnection was created with the proper values
     HttpURLConnection httpURLConnection =

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/JMXPropertyProviderTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/JMXPropertyProviderTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/JMXPropertyProviderTest.java
index 156ee66..265c443 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/JMXPropertyProviderTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/JMXPropertyProviderTest.java
@@ -217,7 +217,7 @@ public class JMXPropertyProviderTest {
     resource.setProperty(HOST_COMPONENT_STATE_PROPERTY_ID, "STARTED");
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
     Assert.assertEquals(1, 
propertyProvider.populateResources(Collections.singleton(resource), request, 
null).size());
 
     List<String> expectedSpecs = new ArrayList<>();
@@ -244,7 +244,7 @@ public class JMXPropertyProviderTest {
     resource.setProperty(HOST_COMPONENT_COMPONENT_NAME_PROPERTY_ID, 
"DATANODE");
 
     // request with an empty set should get all supported properties
-    request = PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     propertyProvider.populateResources(Collections.singleton(resource), 
request, null);
 
@@ -457,7 +457,7 @@ public class JMXPropertyProviderTest {
     resource.setProperty(HOST_COMPONENT_COMPONENT_NAME_PROPERTY_ID, 
"NAMENODE");
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     Assert.assertEquals(1, 
propertyProvider.populateResources(Collections.singleton(resource), request, 
null).size());
 
@@ -498,7 +498,7 @@ public class JMXPropertyProviderTest {
     resource.setProperty(HOST_COMPONENT_STATE_PROPERTY_ID, "INSTALLED");
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     Assert.assertEquals(1, 
propertyProvider.populateResources(Collections.singleton(resource), request, 
null).size());
 
@@ -537,7 +537,7 @@ public class JMXPropertyProviderTest {
       resources.add(resource);
     }
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     Set<Resource> resourceSet = propertyProvider.populateResources(resources, 
request, null);
 
@@ -581,7 +581,7 @@ public class JMXPropertyProviderTest {
     resources.add(resource);
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     Set<Resource> resourceSet = propertyProvider.populateResources(resources, 
request, null);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/RestMetricsPropertyProviderTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/RestMetricsPropertyProviderTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/RestMetricsPropertyProviderTest.java
index e118097..90c8392 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/RestMetricsPropertyProviderTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/RestMetricsPropertyProviderTest.java
@@ -159,7 +159,7 @@ public class RestMetricsPropertyProviderTest {
         Collections.singletonMap("tag", "version1"))).anyTimes();
     expect(amc.getConfigHelper()).andReturn(configHelperMock).anyTimes();
     expect(configHelperMock.getEffectiveConfigProperties(eq(c1),
-        EasyMock.<Map<String, Map<String, 
String>>>anyObject())).andReturn(Collections.singletonMap("storm-site",
+        EasyMock.anyObject())).andReturn(Collections.singletonMap("storm-site",
         Collections.singletonMap("ui.port", 
DEFAULT_STORM_UI_PORT))).anyTimes();
     replay(amc, configHelperMock);
   }
@@ -307,7 +307,7 @@ public class RestMetricsPropertyProviderTest {
     resource.setProperty(HOST_COMPONENT_STATE_PROPERTY_ID, "STARTED");
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
     Assert.assertEquals(1, 
restMetricsPropertyProvider.populateResources(Collections.singleton(resource), 
request, null).size());
     
Assert.assertNull(resource.getPropertyValue(PropertyHelper.getPropertyId("metrics/api/cluster/summary",
 "wrong.metric")));
 
@@ -345,7 +345,7 @@ public class RestMetricsPropertyProviderTest {
     resource.setProperty(HOST_COMPONENT_STATE_PROPERTY_ID, "STARTED");
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     Assert.assertEquals(1, 
restMetricsPropertyProvider.populateResources(Collections.singleton(resource), 
request, null).size());
 
@@ -411,7 +411,7 @@ public class RestMetricsPropertyProviderTest {
     resource.setProperty(HOST_COMPONENT_STATE_PROPERTY_ID, "INSTALLED");
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     Assert.assertEquals(1, 
restMetricsPropertyProvider.populateResources(Collections.singleton(resource), 
request, null).size());
 
@@ -450,7 +450,7 @@ public class RestMetricsPropertyProviderTest {
     }
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     Set<Resource> resourceSet = 
restMetricsPropertyProvider.populateResources(resources, request, null);
 
@@ -493,7 +493,7 @@ public class RestMetricsPropertyProviderTest {
     resources.add(resource);
 
     // request with an empty set should get all supported properties
-    Request request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet());
+    Request request = PropertyHelper.getReadRequest(Collections.emptySet());
 
     Set<Resource> resourceSet = 
restMetricsPropertyProvider.populateResources(resources, request, null);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/ganglia/GangliaPropertyProviderTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/ganglia/GangliaPropertyProviderTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/ganglia/GangliaPropertyProviderTest.java
index ce60c98..e53cfd3 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/ganglia/GangliaPropertyProviderTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/ganglia/GangliaPropertyProviderTest.java
@@ -651,7 +651,7 @@ public class GangliaPropertyProviderTest {
     resource.setProperty(COMPONENT_NAME_PROPERTY_ID, "FLUME_HANDLER");
 
     Map<String, TemporalInfo> temporalInfoMap = new HashMap<>();
-    Request  request = 
PropertyHelper.getReadRequest(Collections.<String>emptySet(), temporalInfoMap);
+    Request  request = PropertyHelper.getReadRequest(Collections.emptySet(), 
temporalInfoMap);
 
     Assert.assertEquals(1, 
propertyProvider.populateResources(Collections.singleton(resource), request, 
null).size());
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/timeline/MetricsRequestHelperTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/timeline/MetricsRequestHelperTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/timeline/MetricsRequestHelperTest.java
index 1d464e3..45b18e3 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/timeline/MetricsRequestHelperTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/timeline/MetricsRequestHelperTest.java
@@ -24,8 +24,6 @@ import static org.easymock.EasyMock.replay;
 
 import java.io.InputStream;
 import java.net.HttpURLConnection;
-import java.util.List;
-import java.util.Map;
 import java.util.TreeMap;
 
 import org.apache.ambari.server.controller.internal.URLStreamProvider;
@@ -73,7 +71,7 @@ public class MetricsRequestHelperTest {
 
     URLStreamProvider urlStreamProviderMock = 
createMock(URLStreamProvider.class);
     expect(urlStreamProviderMock.processURL(EasyMock.isA(String.class), 
EasyMock.isA(String.class),
-      isNull(String.class), EasyMock.<Map<String, 
List<String>>>anyObject())).andReturn(httpURLConnectionMock).once();
+      isNull(String.class), 
EasyMock.anyObject())).andReturn(httpURLConnectionMock).once();
 
     replay(httpURLConnectionMock, urlStreamProviderMock);
 
@@ -104,7 +102,7 @@ public class MetricsRequestHelperTest {
 
     urlStreamProviderMock = createMock(URLStreamProvider.class);
     expect(urlStreamProviderMock.processURL(EasyMock.isA(String.class), 
EasyMock.isA(String.class),
-      isNull(String.class), EasyMock.<Map<String, 
List<String>>>anyObject())).andReturn(httpURLConnectionMock).times(2);
+      isNull(String.class), 
EasyMock.anyObject())).andReturn(httpURLConnectionMock).times(2);
 
     replay(httpURLConnectionMock, urlStreamProviderMock);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/events/listeners/tasks/TaskStatusListenerTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/events/listeners/tasks/TaskStatusListenerTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/events/listeners/tasks/TaskStatusListenerTest.java
index 436434d..934e38b 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/events/listeners/tasks/TaskStatusListenerTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/events/listeners/tasks/TaskStatusListenerTest.java
@@ -38,7 +38,6 @@ import org.apache.ambari.server.orm.dao.HostDAO;
 import org.apache.ambari.server.orm.dao.RequestDAO;
 import org.apache.ambari.server.orm.dao.StageDAO;
 import org.apache.ambari.server.orm.entities.RequestEntity;
-import org.apache.ambari.server.orm.entities.RoleSuccessCriteriaEntity;
 import org.apache.ambari.server.orm.entities.StageEntity;
 import org.apache.ambari.server.orm.entities.StageEntityPK;
 import org.apache.ambari.server.state.ServiceComponentHostEvent;
@@ -91,7 +90,7 @@ public class TaskStatusListenerTest extends EasyMockSupport {
     
EasyMock.expect(stageEntity.getStatus()).andReturn(hostRoleStatus).anyTimes();;
     
EasyMock.expect(stageEntity.getDisplayStatus()).andReturn(hostRoleStatus).anyTimes();
     
EasyMock.expect(stageEntity.isSkippable()).andReturn(Boolean.FALSE).anyTimes();;
-    
EasyMock.expect(stageEntity.getRoleSuccessCriterias()).andReturn(Collections.<RoleSuccessCriteriaEntity>emptyList()).anyTimes();
+    
EasyMock.expect(stageEntity.getRoleSuccessCriterias()).andReturn(Collections.emptyList()).anyTimes();
     
EasyMock.expect(stageDAO.findByPK(anyObject(StageEntityPK.class))).andReturn(stageEntity).anyTimes();
     
EasyMock.expect(requestEntity.getStatus()).andReturn(hostRoleStatus).anyTimes();;
     
EasyMock.expect(requestEntity.getDisplayStatus()).andReturn(hostRoleStatus).anyTimes();

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/hooks/users/UserHookServiceTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/hooks/users/UserHookServiceTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/hooks/users/UserHookServiceTest.java
index 2b6fe2a..effe078 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/hooks/users/UserHookServiceTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/hooks/users/UserHookServiceTest.java
@@ -158,7 +158,7 @@ public class UserHookServiceTest extends EasyMockSupport {
     replayAll();
 
     // WHEN
-    Boolean triggered = hookService.execute(new 
PostUserCreationHookContext(Collections.<String, Set<String>>emptyMap()));
+    Boolean triggered = hookService.execute(new 
PostUserCreationHookContext(Collections.emptyMap()));
 
     //THEN
     Assert.assertFalse("The hook should not be triggered if there is no users 
in the context!", triggered);
@@ -216,7 +216,7 @@ public class UserHookServiceTest extends EasyMockSupport {
 
     // TBD refine expectations to validate the logic / eg capture arguments
     stageMock.addServerActionCommand(EasyMock.anyString(), 
EasyMock.anyString(), EasyMock.anyObject(Role.class), 
EasyMock.anyObject(RoleCommand.class), EasyMock.anyString(), 
EasyMock.anyObject(ServiceComponentHostServerActionEvent.class),
-        EasyMock.<Map<String, String>>anyObject(), EasyMock.anyString(), 
EasyMock.<Map<String, Map<String, String>>>anyObject(), EasyMock.anyInt(), 
EasyMock.anyBoolean(), EasyMock.anyBoolean());
+        EasyMock.anyObject(), EasyMock.anyString(), EasyMock.anyObject(), 
EasyMock.anyInt(), EasyMock.anyBoolean(), EasyMock.anyBoolean());
     
EasyMock.expect(requestFactoryMock.createNewFromStages(Arrays.asList(stageMock),
 "{}")).andReturn(null);
     EasyMock.expect(stageFactoryMock.createNew(1, 
"/var/lib/ambari-server/tmp:1", "test-cluster", 1, "Post user creation hook for 
[ 1 ] users", "{}", "{}")).andReturn(stageMock);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/OrmTestHelper.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/OrmTestHelper.java 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/OrmTestHelper.java
index 271d536..2c6c096 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/OrmTestHelper.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/OrmTestHelper.java
@@ -299,7 +299,7 @@ public class OrmTestHelper {
     commandEntity2.setStage(stageEntity);
     commandEntity3.setStage(stageEntity);
 
-    stageEntity.setHostRoleCommands(new ArrayList<HostRoleCommandEntity>());
+    stageEntity.setHostRoleCommands(new ArrayList<>());
     stageEntity.getHostRoleCommands().add(commandEntity);
     stageEntity.getHostRoleCommands().add(commandEntity2);
     stageEntity.getHostRoleCommands().add(commandEntity3);

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/HostRoleCommandDAOTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/HostRoleCommandDAOTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/HostRoleCommandDAOTest.java
index 3b59b73..8d453c4 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/HostRoleCommandDAOTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/HostRoleCommandDAOTest.java
@@ -91,12 +91,12 @@ public class HostRoleCommandDAOTest {
     RequestEntity requestEntity = new RequestEntity();
     requestEntity.setRequestId(requestId);
     requestEntity.setClusterId(clusterEntity.getClusterId());
-    requestEntity.setStages(new ArrayList<StageEntity>());
+    requestEntity.setStages(new ArrayList<>());
     m_requestDAO.create(requestEntity);
 
     AtomicLong stageId = new AtomicLong(1);
     HostEntity host = m_hostDAO.findByName("test_host1");
-    host.setHostRoleCommandEntities(new ArrayList<HostRoleCommandEntity>());
+    host.setHostRoleCommandEntities(new ArrayList<>());
 
     createStage(stageId.getAndIncrement(), 3, host, requestEntity, 
HostRoleStatus.COMPLETED);
     createStage(stageId.getAndIncrement(), 2, host, requestEntity, 
HostRoleStatus.SKIPPED_FAILED);
@@ -126,12 +126,12 @@ public class HostRoleCommandDAOTest {
     RequestEntity requestEntity = new RequestEntity();
     requestEntity.setRequestId(requestId);
     requestEntity.setClusterId(clusterEntity.getClusterId());
-    requestEntity.setStages(new ArrayList<StageEntity>());
+    requestEntity.setStages(new ArrayList<>());
     m_requestDAO.create(requestEntity);
 
     AtomicLong stageId = new AtomicLong(1);
     HostEntity host = m_hostDAO.findByName("test_host1");
-    host.setHostRoleCommandEntities(new ArrayList<HostRoleCommandEntity>());
+    host.setHostRoleCommandEntities(new ArrayList<>());
 
     // start out with a stage that is skippable, supports auto skip, and has
     // auto skip tasks
@@ -205,7 +205,7 @@ public class HostRoleCommandDAOTest {
     stageEntity.setClusterId(clusterEntity.getClusterId());
     stageEntity.setRequest(requestEntity);
     stageEntity.setStageId(stageId);
-    stageEntity.setHostRoleCommands(new ArrayList<HostRoleCommandEntity>());
+    stageEntity.setHostRoleCommands(new ArrayList<>());
     stageEntity.setSkippable(skipStage);
     stageEntity.setAutoSkipFailureSupported(supportsAutoSkipOnFailure);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/RequestDAOTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/RequestDAOTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/RequestDAOTest.java
index 432a646..c711302 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/RequestDAOTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/RequestDAOTest.java
@@ -175,11 +175,11 @@ public class RequestDAOTest {
     RequestEntity requestEntity = new RequestEntity();
     requestEntity.setRequestId(requestId);
     requestEntity.setClusterId(clusterEntity.getClusterId());
-    requestEntity.setStages(new ArrayList<StageEntity>());
+    requestEntity.setStages(new ArrayList<>());
     requestDAO.create(requestEntity);
 
     HostEntity host = hostDAO.findByName(hostName);
-    host.setHostRoleCommandEntities(new ArrayList<HostRoleCommandEntity>());
+    host.setHostRoleCommandEntities(new ArrayList<>());
 
     long stageId = 1L;
 
@@ -202,7 +202,7 @@ public class RequestDAOTest {
       stageEntity.setClusterId(clusterEntity.getClusterId());
       stageEntity.setRequest(re);
       stageEntity.setStageId(stageId);
-      stageEntity.setHostRoleCommands(new ArrayList<HostRoleCommandEntity>());
+      stageEntity.setHostRoleCommands(new ArrayList<>());
       stageEntity.setSkippable(skipStage);
       stageDAO.create(stageEntity);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/StageDAOTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/StageDAOTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/StageDAOTest.java
index e0a490c..1a6eece 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/StageDAOTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/StageDAOTest.java
@@ -134,7 +134,7 @@ public class StageDAOTest {
     sortProperties.add(new SortRequestProperty(
         StageResourceProvider.STAGE_LOG_INFO, SortRequest.Order.ASC));
 
-    Request request = PropertyHelper.getReadRequest(new 
HashSet<>(Arrays.<String>asList()),
+    Request request = PropertyHelper.getReadRequest(new 
HashSet<>(Arrays.asList()),
         null, null, null, sortRequest);
 
     // get back all 5

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/UpgradeDAOTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/UpgradeDAOTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/UpgradeDAOTest.java
index 59e018a..f23e10d 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/UpgradeDAOTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/UpgradeDAOTest.java
@@ -35,7 +35,6 @@ import org.apache.ambari.server.orm.InMemoryDefaultTestModule;
 import org.apache.ambari.server.orm.OrmTestHelper;
 import org.apache.ambari.server.orm.entities.RepositoryVersionEntity;
 import org.apache.ambari.server.orm.entities.RequestEntity;
-import org.apache.ambari.server.orm.entities.StageEntity;
 import org.apache.ambari.server.orm.entities.UpgradeEntity;
 import org.apache.ambari.server.orm.entities.UpgradeGroupEntity;
 import org.apache.ambari.server.orm.entities.UpgradeItemEntity;
@@ -86,7 +85,7 @@ public class UpgradeDAOTest {
     requestEntity.setRequestId(99L);
     requestEntity.setClusterId(clusterId.longValue());
     requestEntity.setStatus(HostRoleStatus.PENDING);
-    requestEntity.setStages(new ArrayList<StageEntity>());
+    requestEntity.setStages(new ArrayList<>());
     requestDAO.create(requestEntity);
 
     repositoryVersion2200 = helper.getOrCreateRepositoryVersion(new 
StackId("HDP", "2.2.0"), "2.2.0.0-1234");
@@ -167,7 +166,7 @@ public class UpgradeDAOTest {
     requestEntity.setRequestId(1L);
     requestEntity.setClusterId(clusterId.longValue());
     requestEntity.setStatus(HostRoleStatus.PENDING);
-    requestEntity.setStages(new ArrayList<StageEntity>());
+    requestEntity.setStages(new ArrayList<>());
     requestDAO.create(requestEntity);
 
     UpgradeEntity entity1 = new UpgradeEntity();
@@ -216,7 +215,7 @@ public class UpgradeDAOTest {
     requestEntity.setRequestId(1L);
     requestEntity.setClusterId(clusterId.longValue());
     requestEntity.setStatus(HostRoleStatus.PENDING);
-    requestEntity.setStages(new ArrayList<StageEntity>());
+    requestEntity.setStages(new ArrayList<>());
     requestDAO.create(requestEntity);
 
     UpgradeEntity upgradeEntity = new UpgradeEntity();

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/WidgetDAOTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/WidgetDAOTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/WidgetDAOTest.java
index 2941d3d..c635697 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/WidgetDAOTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/dao/WidgetDAOTest.java
@@ -73,7 +73,7 @@ public class WidgetDAOTest {
       widgetEntity.setWidgetName("widget" + i);
       widgetEntity.setWidgetType("GAUGE");
       widgetEntity.setWidgetValues("${`jvmMemoryHeapUsed + 
jvmMemoryHeapMax`}");
-      widgetEntity.setListWidgetLayoutUserWidgetEntity(new 
LinkedList<WidgetLayoutUserWidgetEntity>());
+      widgetEntity.setListWidgetLayoutUserWidgetEntity(new LinkedList<>());
       final WidgetLayoutEntity widgetLayoutEntity = new WidgetLayoutEntity();
       widgetLayoutEntity.setClusterId(clusterId);
       widgetLayoutEntity.setLayoutName("layout name" + i);

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/db/DDLTests.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/db/DDLTests.java 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/db/DDLTests.java
index 6d017ce..8c20f4c 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/orm/db/DDLTests.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/orm/db/DDLTests.java
@@ -227,7 +227,7 @@ public class DDLTests {
   }
 
   static <T> Set<T> toSet(Optional<T> arg) {
-    return arg.isPresent() ? ImmutableSet.of(arg.get()) : ImmutableSet.<T>of();
+    return arg.isPresent() ? ImmutableSet.of(arg.get()) : ImmutableSet.of();
   }
 
   static <ContentType> List<String> compareSets(String message, 
Set<ContentType> base, Set<ContentType> other) {

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostEntityTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostEntityTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostEntityTest.java
index 0758017..4a2fad0 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostEntityTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/HostEntityTest.java
@@ -36,7 +36,7 @@ public class HostEntityTest {
     HostEntity hostEntity = new HostEntity();
     HostComponentDesiredStateEntity stateEntity = new 
HostComponentDesiredStateEntity();
 
-    hostEntity.setHostComponentDesiredStateEntities(new 
HashSet<HostComponentDesiredStateEntity>());
+    hostEntity.setHostComponentDesiredStateEntities(new HashSet<>());
 
     Collection<HostComponentDesiredStateEntity> stateEntities = 
hostEntity.getHostComponentDesiredStateEntities();
     assertTrue(stateEntities.isEmpty());
@@ -53,7 +53,7 @@ public class HostEntityTest {
     HostEntity hostEntity = new HostEntity();
     HostComponentDesiredStateEntity stateEntity = new 
HostComponentDesiredStateEntity();
 
-    hostEntity.setHostComponentDesiredStateEntities(new 
HashSet<HostComponentDesiredStateEntity>());
+    hostEntity.setHostComponentDesiredStateEntities(new HashSet<>());
 
     Collection<HostComponentDesiredStateEntity> stateEntities = 
hostEntity.getHostComponentDesiredStateEntities();
     assertTrue(stateEntities.isEmpty());
@@ -69,7 +69,7 @@ public class HostEntityTest {
     HostEntity hostEntity = new HostEntity();
     HostComponentDesiredStateEntity stateEntity = new 
HostComponentDesiredStateEntity();
 
-    hostEntity.setHostComponentDesiredStateEntities(new 
HashSet<HostComponentDesiredStateEntity>());
+    hostEntity.setHostComponentDesiredStateEntities(new HashSet<>());
 
     Collection<HostComponentDesiredStateEntity> stateEntities = 
hostEntity.getHostComponentDesiredStateEntities();
     assertTrue(stateEntities.isEmpty());
@@ -90,7 +90,7 @@ public class HostEntityTest {
     HostEntity hostEntity = new HostEntity();
     HostComponentStateEntity stateEntity = new HostComponentStateEntity();
 
-    hostEntity.setHostComponentStateEntities(new 
HashSet<HostComponentStateEntity>());
+    hostEntity.setHostComponentStateEntities(new HashSet<>());
 
     Collection<HostComponentStateEntity> stateEntities = 
hostEntity.getHostComponentStateEntities();
     assertTrue(stateEntities.isEmpty());
@@ -108,7 +108,7 @@ public class HostEntityTest {
     HostEntity hostEntity = new HostEntity();
     HostComponentStateEntity stateEntity = new HostComponentStateEntity();
 
-    hostEntity.setHostComponentStateEntities(new 
HashSet<HostComponentStateEntity>());
+    hostEntity.setHostComponentStateEntities(new HashSet<>());
 
     Collection<HostComponentStateEntity> stateEntities = 
hostEntity.getHostComponentStateEntities();
     assertTrue(stateEntities.isEmpty());
@@ -125,7 +125,7 @@ public class HostEntityTest {
     HostEntity hostEntity = new HostEntity();
     HostComponentStateEntity stateEntity = new HostComponentStateEntity();
 
-    hostEntity.setHostComponentStateEntities(new 
HashSet<HostComponentStateEntity>());
+    hostEntity.setHostComponentStateEntities(new HashSet<>());
 
     Collection<HostComponentStateEntity> stateEntities = 
hostEntity.getHostComponentStateEntities();
     assertTrue(stateEntities.isEmpty());

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncEventEntityTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncEventEntityTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncEventEntityTest.java
index 374b1ef..676dd1f 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncEventEntityTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncEventEntityTest.java
@@ -63,7 +63,7 @@ public class LdapSyncEventEntityTest {
   public void testSetGetSpecs() throws Exception {
     LdapSyncEventEntity event = new LdapSyncEventEntity(1L);
     LdapSyncSpecEntity spec = new 
LdapSyncSpecEntity(LdapSyncSpecEntity.PrincipalType.GROUPS,
-        LdapSyncSpecEntity.SyncType.ALL, Collections.<String>emptyList());
+        LdapSyncSpecEntity.SyncType.ALL, Collections.emptyList());
 
     event.setSpecs(Collections.singletonList(spec));
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncSpecEntityTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncSpecEntityTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncSpecEntityTest.java
index f863ffb..bacee4a 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncSpecEntityTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/orm/entities/LdapSyncSpecEntityTest.java
@@ -32,22 +32,22 @@ public class LdapSyncSpecEntityTest {
   @Test
   public void testGetPrincipalType() throws Exception {
     LdapSyncSpecEntity entity = new 
LdapSyncSpecEntity(LdapSyncSpecEntity.PrincipalType.USERS,
-        LdapSyncSpecEntity.SyncType.ALL, Collections.<String>emptyList());
+        LdapSyncSpecEntity.SyncType.ALL, Collections.emptyList());
     Assert.assertEquals(LdapSyncSpecEntity.PrincipalType.USERS, 
entity.getPrincipalType());
 
     entity = new LdapSyncSpecEntity(LdapSyncSpecEntity.PrincipalType.GROUPS,
-        LdapSyncSpecEntity.SyncType.ALL, Collections.<String>emptyList());
+        LdapSyncSpecEntity.SyncType.ALL, Collections.emptyList());
     Assert.assertEquals(LdapSyncSpecEntity.PrincipalType.GROUPS, 
entity.getPrincipalType());
   }
 
   @Test
   public void testGetSyncType() throws Exception {
     LdapSyncSpecEntity entity = new 
LdapSyncSpecEntity(LdapSyncSpecEntity.PrincipalType.USERS,
-        LdapSyncSpecEntity.SyncType.ALL, Collections.<String>emptyList());
+        LdapSyncSpecEntity.SyncType.ALL, Collections.emptyList());
     Assert.assertEquals(LdapSyncSpecEntity.SyncType.ALL, entity.getSyncType());
 
     entity = new LdapSyncSpecEntity(LdapSyncSpecEntity.PrincipalType.USERS,
-        LdapSyncSpecEntity.SyncType.EXISTING, Collections.<String>emptyList());
+        LdapSyncSpecEntity.SyncType.EXISTING, Collections.emptyList());
     Assert.assertEquals(LdapSyncSpecEntity.SyncType.EXISTING, 
entity.getSyncType());
   }
 
@@ -66,7 +66,7 @@ public class LdapSyncSpecEntityTest {
   public void testIllegalConstruction() throws Exception {
     try {
       new LdapSyncSpecEntity(LdapSyncSpecEntity.PrincipalType.USERS,
-          LdapSyncSpecEntity.SyncType.SPECIFIC, 
Collections.<String>emptyList());
+          LdapSyncSpecEntity.SyncType.SPECIFIC, Collections.emptyList());
       Assert.fail("expected IllegalArgumentException");
     } catch (IllegalArgumentException e) {
       // expected

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/scheduler/ExecutionScheduleManagerTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/scheduler/ExecutionScheduleManagerTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/scheduler/ExecutionScheduleManagerTest.java
index 966123e..f901bda 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/scheduler/ExecutionScheduleManagerTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/scheduler/ExecutionScheduleManagerTest.java
@@ -615,13 +615,13 @@ public class ExecutionScheduleManagerTest {
     expect(context.getJobDetail()).andReturn(jobDetail).anyTimes();
     expect(context.getMergedJobDataMap()).andReturn(jobDataMap).anyTimes();
     expect(jobDetail.getKey()).andReturn(new JobKey("TestJob"));
-    expect(jobDataMap.getWrappedMap()).andReturn(new HashMap<String,Object>());
+    expect(jobDataMap.getWrappedMap()).andReturn(new HashMap<>());
     expect(scheduleManagerMock.continueOnMisfire(context)).andReturn(true);
 
-    executionJob.doWork(EasyMock.<Map<String, Object>>anyObject());
+    executionJob.doWork(EasyMock.anyObject());
     expectLastCall().andThrow(new AmbariException("Test 
Exception")).anyTimes();
 
-    executionJob.finalizeExecution(EasyMock.<Map<String, Object>>anyObject());
+    executionJob.finalizeExecution(EasyMock.anyObject());
     expectLastCall().once();
 
     replay(scheduleManagerMock, executionJob, context, jobDataMap, jobDetail);

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthenticationTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthenticationTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthenticationTest.java
index e7681e8..64ec201 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthenticationTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthenticationTest.java
@@ -37,7 +37,6 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.springframework.security.authentication.TestingAuthenticationToken;
 import org.springframework.security.core.Authentication;
-import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.userdetails.User;
 import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.web.context.request.RequestAttributes;
@@ -123,7 +122,7 @@ public class AmbariAuthenticationTest extends 
EasyMockSupport {
   @Test
   public void testGetUserDetailPrincipal() throws Exception {
     // Given
-    UserDetails userDetails = new User("user", "password", 
Collections.<GrantedAuthority>emptyList());
+    UserDetails userDetails = new User("user", "password", 
Collections.emptyList());
     Authentication authentication = new 
TestingAuthenticationToken(userDetails, userDetails.getPassword());
 
     Authentication ambariAuthentication = new 
AmbariAuthentication(authentication, DEFAULT_USER_ID);
@@ -138,7 +137,7 @@ public class AmbariAuthenticationTest extends 
EasyMockSupport {
   @Test
   public void testGetUserDetailPrincipalWithLoginAlias() throws Exception {
     // Given
-    UserDetails userDetails = new User("loginAlias", "password", 
Collections.<GrantedAuthority>emptyList());
+    UserDetails userDetails = new User("loginAlias", "password", 
Collections.emptyList());
     Authentication authentication = new 
TestingAuthenticationToken(userDetails, userDetails.getPassword());
 
     expect(servletRequestAttributes.getAttribute(eq("loginAlias"), 
eq(RequestAttributes.SCOPE_SESSION)))
@@ -153,7 +152,7 @@ public class AmbariAuthenticationTest extends 
EasyMockSupport {
 
     // Then
     verify();
-    UserDetails expectedUserDetails = new User("user", "password", 
Collections.<GrantedAuthority>emptyList()); // user detail with login alias 
resolved
+    UserDetails expectedUserDetails = new User("user", "password", 
Collections.emptyList()); // user detail with login alias resolved
 
     assertEquals(expectedUserDetails, principal);
   }
@@ -214,7 +213,7 @@ public class AmbariAuthenticationTest extends 
EasyMockSupport {
   @Test
   public void testGetNameWithUserDetailsPrincipal() throws Exception {
     // Given
-    UserDetails userDetails = new User("user", "password", 
Collections.<GrantedAuthority>emptyList());
+    UserDetails userDetails = new User("user", "password", 
Collections.emptyList());
     Authentication authentication = new 
TestingAuthenticationToken(userDetails, userDetails.getPassword());
 
     Authentication ambariAuthentication = new 
AmbariAuthentication(authentication, DEFAULT_USER_ID);
@@ -229,7 +228,7 @@ public class AmbariAuthenticationTest extends 
EasyMockSupport {
   @Test
   public void testGetNameWithUserDetailsPrincipalWithLoginAlias() throws 
Exception {
     // Given
-    UserDetails userDetails = new User("loginAlias", "password", 
Collections.<GrantedAuthority>emptyList());
+    UserDetails userDetails = new User("loginAlias", "password", 
Collections.emptyList());
     Authentication authentication = new 
TestingAuthenticationToken(userDetails, userDetails.getPassword());
 
     expect(servletRequestAttributes.getAttribute(eq("loginAlias"), 
eq(RequestAttributes.SCOPE_SESSION)))

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthorizationFilterTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthorizationFilterTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthorizationFilterTest.java
index 15e243e..e6c3099 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthorizationFilterTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariAuthorizationFilterTest.java
@@ -29,8 +29,6 @@ import java.util.Collections;
 import javax.persistence.EntityManager;
 import javax.servlet.FilterChain;
 import javax.servlet.FilterConfig;
-import javax.servlet.ServletRequest;
-import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
@@ -309,7 +307,7 @@ public class AmbariAuthorizationFilterTest {
     expect(request.getQueryString()).andReturn(null).anyTimes();
     expect(request.getMethod()).andReturn("GET").anyTimes();
 
-    chain.doFilter(EasyMock.<ServletRequest>anyObject(), 
EasyMock.<ServletResponse>anyObject());
+    chain.doFilter(EasyMock.anyObject(), EasyMock.anyObject());
     EasyMock.expectLastCall().once();
 
     final Configuration configuration = 
EasyMock.createMock(Configuration.class);
@@ -321,7 +319,7 @@ public class AmbariAuthorizationFilterTest {
 
     final Users users = EasyMock.createMock(Users.class);
     expect(users.getUser("user1", UserType.LOCAL)).andReturn(user).once();
-    expect(users.getUserAuthorities("user1", 
UserType.LOCAL)).andReturn(Collections.<AmbariGrantedAuthority>emptyList()).once();
+    expect(users.getUserAuthorities("user1", 
UserType.LOCAL)).andReturn(Collections.emptyList()).once();
 
     replay(request, response, chain, configuration, users, user);
 
@@ -385,7 +383,7 @@ public class AmbariAuthorizationFilterTest {
     expect(filter.getSecurityContext()).andReturn(securityContext).anyTimes();
     expect(filter.getViewRegistry()).andReturn(viewRegistry).anyTimes();
     
expect(securityContext.getAuthentication()).andReturn(authentication).anyTimes();
-    expect(viewRegistry.checkPermission(EasyMock.eq("DeniedView"), 
EasyMock.<String>anyObject(), EasyMock.<String>anyObject(), 
EasyMock.anyBoolean())).andReturn(false).anyTimes();
+    expect(viewRegistry.checkPermission(EasyMock.eq("DeniedView"), 
EasyMock.anyObject(), EasyMock.anyObject(), 
EasyMock.anyBoolean())).andReturn(false).anyTimes();
 
     replay(filterConfig, filter, securityContext, viewRegistry, configuration, 
auditLogger);
 
@@ -408,7 +406,7 @@ public class AmbariAuthorizationFilterTest {
       }
 
       if (urlTest.getValue()) {
-        chain.doFilter(EasyMock.<ServletRequest>anyObject(), 
EasyMock.<ServletResponse>anyObject());
+        chain.doFilter(EasyMock.anyObject(), EasyMock.anyObject());
         EasyMock.expectLastCall().once();
       }
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariUserAuthenticationFilterTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariUserAuthenticationFilterTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariUserAuthenticationFilterTest.java
index 0483b04..f2e2e00 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariUserAuthenticationFilterTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/AmbariUserAuthenticationFilterTest.java
@@ -75,7 +75,7 @@ public class AmbariUserAuthenticationFilterTest {
     User user = combineUser();
 
     expect(users.getUser(TEST_USER_ID)).andReturn(user);
-    expect(users.getUserAuthorities(user.getUserName(), 
user.getUserType())).andReturn(new HashSet<AmbariGrantedAuthority>());
+    expect(users.getUserAuthorities(user.getUserName(), 
user.getUserType())).andReturn(new HashSet<>());
     Capture<String> userHeaderValue = newCapture();
     response.setHeader(eq("User"), capture(userHeaderValue));
     expectLastCall();

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/UsersTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/UsersTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/UsersTest.java
index ac91c90..29c21a7 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/UsersTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/security/authorization/UsersTest.java
@@ -164,9 +164,9 @@ public class UsersTest extends EasyMockSupport {
     existing.setUserName(UserName.fromString(SERVICEOP_USER_NAME));
     existing.setUserType(UserType.LDAP);
     existing.setUserId(1);
-    existing.setMemberEntities(Collections.<MemberEntity>emptySet());
+    existing.setMemberEntities(Collections.emptySet());
     PrincipalEntity principal = new PrincipalEntity();
-    principal.setPrivileges(Collections.<PrivilegeEntity>emptySet());
+    principal.setPrivileges(Collections.emptySet());
     existing.setPrincipal(principal);
     initForCreateUser(existing);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/security/ldap/AmbariLdapDataPopulatorTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/security/ldap/AmbariLdapDataPopulatorTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/security/ldap/AmbariLdapDataPopulatorTest.java
index 63b6927..afd6f6d 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/security/ldap/AmbariLdapDataPopulatorTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/security/ldap/AmbariLdapDataPopulatorTest.java
@@ -52,7 +52,6 @@ import org.apache.ambari.server.configuration.Configuration;
 import org.apache.ambari.server.orm.entities.GroupEntity;
 import org.apache.ambari.server.orm.entities.MemberEntity;
 import org.apache.ambari.server.orm.entities.PrincipalEntity;
-import org.apache.ambari.server.orm.entities.PrivilegeEntity;
 import org.apache.ambari.server.orm.entities.UserEntity;
 import org.apache.ambari.server.security.authorization.AmbariLdapUtils;
 import org.apache.ambari.server.security.authorization.Group;
@@ -154,7 +153,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(configuration.isLdapConfigured()).andReturn(true);
-    expect(ldapTemplate.search(EasyMock.<String>anyObject(), 
EasyMock.<String>anyObject(), 
EasyMock.<AttributesMapper>anyObject())).andThrow(new 
NullPointerException()).once();
+    expect(ldapTemplate.search(EasyMock.<String>anyObject(), 
EasyMock.anyObject(), EasyMock.<AttributesMapper>anyObject())).andThrow(new 
NullPointerException()).once();
     replay(ldapTemplate, configuration, ldapServerProperties);
 
     final AmbariLdapDataPopulatorTestInstance populator = new 
AmbariLdapDataPopulatorTestInstance(configuration, users);
@@ -201,7 +200,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(configuration.isLdapConfigured()).andReturn(true);
-    expect(ldapTemplate.search(EasyMock.<String>anyObject(), 
EasyMock.<String>anyObject(), 
EasyMock.<AttributesMapper>anyObject())).andReturn(Collections.emptyList()).once();
+    expect(ldapTemplate.search(EasyMock.<String>anyObject(), 
EasyMock.anyObject(), 
EasyMock.<AttributesMapper>anyObject())).andReturn(Collections.emptyList()).once();
     replay(ldapTemplate, configuration);
 
     final AmbariLdapDataPopulatorTestInstance populator = new 
AmbariLdapDataPopulatorTestInstance(configuration, users);
@@ -261,7 +260,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(groupList);
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2, group3, group4, group5);
@@ -272,13 +271,13 @@ public class AmbariLdapDataPopulatorTest {
         .withConstructor(configuration, users)
         .createNiceMock();
 
-    
expect(populator.getLdapGroups("group2")).andReturn(Collections.<LdapGroupDto>emptySet());
+    
expect(populator.getLdapGroups("group2")).andReturn(Collections.emptySet());
     LdapGroupDto externalGroup1 = createNiceMock(LdapGroupDto.class);
     LdapBatchDto batchInfo = new LdapBatchDto();
-    populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup1), 
EasyMock.<Map<String, User>>anyObject(), EasyMock.<Map<String, 
Group>>anyObject(), EasyMock.<Set<String>>anyObject(), anyBoolean());
+    populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup1), 
EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(), anyBoolean());
     expectLastCall();
     
expect(populator.getLdapGroups("group4")).andReturn(Collections.singleton(externalGroup1));
-    
expect(populator.getLdapGroups("group5")).andReturn(Collections.<LdapGroupDto>emptySet());
+    
expect(populator.getLdapGroups("group5")).andReturn(Collections.emptySet());
     replay(populator);
 
     populator.setLdapTemplate(ldapTemplate);
@@ -315,7 +314,7 @@ public class AmbariLdapDataPopulatorTest {
     Configuration configuration = createNiceMock(Configuration.class);
     Users users = createNiceMock(Users.class);
     expect(users.getAllGroups()).andReturn(Arrays.asList(group1, group2));
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
     expect(configuration.getLdapServerProperties()).andReturn(new 
LdapServerProperties()).anyTimes();
 
     LdapGroupDto group1Dto = new LdapGroupDto();
@@ -326,7 +325,7 @@ public class AmbariLdapDataPopulatorTest {
 
     LdapGroupDto group2Dto = new LdapGroupDto();
     group2Dto.setGroupName("group2");
-    group2Dto.setMemberAttributes(Collections.<String>emptySet());
+    group2Dto.setMemberAttributes(Collections.emptySet());
     Set<LdapGroupDto> groupDtos2 = Sets.newHashSet();
     groupDtos2.add(group2Dto);
 
@@ -375,7 +374,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(groupList);
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2, group3, group4);
@@ -400,14 +399,14 @@ public class AmbariLdapDataPopulatorTest {
     Set<LdapGroupDto> externalGroups = createSet(externalGroup3, 
externalGroup4);
     for (LdapGroupDto externalGroup : externalGroups) {
       populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup),
-        EasyMock.<Map<String, User>>anyObject(), EasyMock.<Map<String, 
Group>>anyObject(), EasyMock.<Set<String>>anyObject(), anyBoolean());
+        EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(), 
anyBoolean());
       expectLastCall();
     }
     populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup1),
-      EasyMock.<Map<String, User>>anyObject(), EasyMock.<Map<String, 
Group>>anyObject(), EasyMock.<Set<String>>anyObject(), anyBoolean());
+      EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(), 
anyBoolean());
     expectLastCall();
-    populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup2), 
EasyMock.<Map<String, User>>anyObject(),
-      EasyMock.<Map<String, Group>>anyObject(), 
EasyMock.<Set<String>>anyObject(), anyBoolean());
+    populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup2), 
EasyMock.anyObject(),
+      EasyMock.anyObject(), EasyMock.anyObject(), anyBoolean());
     expectLastCall();
     expect(populator.getLdapGroups("x*")).andReturn(externalGroups);
     
expect(populator.getLdapGroups("group1")).andReturn(Collections.singleton(externalGroup1));
@@ -460,7 +459,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(groupList);
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2, group3, group4);
@@ -485,12 +484,12 @@ public class AmbariLdapDataPopulatorTest {
     LdapBatchDto batchInfo = new LdapBatchDto();
     Set<LdapGroupDto> externalGroups = createSet(externalGroup3, 
externalGroup4);
     for (LdapGroupDto externalGroup : externalGroups) {
-      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.<Map<String, User>>anyObject(), EasyMock.<Map<String, 
Group>>anyObject(),
-        EasyMock.<Set<String>>anyObject(), anyBoolean());
+      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.anyObject(), EasyMock.anyObject(),
+        EasyMock.anyObject(), anyBoolean());
       expectLastCall();
     }
-    populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup2), 
EasyMock.<Map<String, User>>anyObject(),
-      EasyMock.<Map<String, Group>>anyObject(), 
EasyMock.<Set<String>>anyObject(), anyBoolean());
+    populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup2), 
EasyMock.anyObject(),
+      EasyMock.anyObject(), EasyMock.anyObject(), anyBoolean());
     expectLastCall();
     expect(populator.getLdapGroups("x*")).andReturn(externalGroups);
     
expect(populator.getLdapGroups("group2")).andReturn(Collections.singleton(externalGroup2));
@@ -537,7 +536,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(groupList);
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2, group3, group4);
@@ -561,8 +560,8 @@ public class AmbariLdapDataPopulatorTest {
     LdapBatchDto batchInfo = new LdapBatchDto();
     Set<LdapGroupDto> externalGroups = createSet(externalGroup1, 
externalGroup2, externalGroup3, externalGroup4);
     for (LdapGroupDto externalGroup : externalGroups) {
-      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.<Map<String, User>>anyObject(),
-        EasyMock.<Map<String, Group>>anyObject(), 
EasyMock.<Set<String>>anyObject(), anyBoolean());
+      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.anyObject(),
+        EasyMock.anyObject(), EasyMock.anyObject(), anyBoolean());
       expectLastCall();
     }
     expect(populator.getLdapGroups("group*")).andReturn(externalGroups);
@@ -609,7 +608,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(groupList);
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2, group3, group4);
@@ -633,7 +632,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapBatchDto batchInfo = new LdapBatchDto();
     Set<LdapGroupDto> externalGroups = createSet(externalGroup3, 
externalGroup4);
     expect(populator.getLdapGroups("x*")).andReturn(externalGroups);
-    
expect(populator.getLdapGroups("group1")).andReturn(Collections.<LdapGroupDto>emptySet());
+    
expect(populator.getLdapGroups("group1")).andReturn(Collections.emptySet());
     
expect(populator.getLdapGroups("group2")).andReturn(Collections.singleton(externalGroup2));
     replay(populator);
 
@@ -669,7 +668,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(groupList);
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2, group3, group4, group5);
@@ -692,8 +691,8 @@ public class AmbariLdapDataPopulatorTest {
     LdapBatchDto batchInfo = new LdapBatchDto();
     Set<LdapGroupDto> externalGroups = createSet(externalGroup1, 
externalGroup2, externalGroup3, externalGroup4);
     for (LdapGroupDto externalGroup : externalGroups) {
-      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.<Map<String, User>>anyObject(),
-        EasyMock.<Map<String, Group>>anyObject(), 
EasyMock.<Set<String>>anyObject(), anyBoolean());
+      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.anyObject(),
+        EasyMock.anyObject(), EasyMock.anyObject(), anyBoolean());
       expectLastCall();
     }
 
@@ -736,7 +735,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(Arrays.asList(group1, group2));
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2);
@@ -754,8 +753,8 @@ public class AmbariLdapDataPopulatorTest {
     LdapBatchDto batchInfo = new LdapBatchDto();
     Set<LdapGroupDto> externalGroups = createSet(externalGroup1, 
externalGroup2);
     for (LdapGroupDto externalGroup : externalGroups) {
-      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.<Map<String, User>>anyObject(),
-        EasyMock.<Map<String, Group>>anyObject(), 
EasyMock.<Set<String>>anyObject(), anyBoolean());
+      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.anyObject(),
+        EasyMock.anyObject(), EasyMock.anyObject(), anyBoolean());
       expectLastCall();
     }
     expect(populator.getExternalLdapGroupInfo()).andReturn(externalGroups);
@@ -803,7 +802,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(groupList);
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2, group3, group4);
@@ -819,8 +818,8 @@ public class AmbariLdapDataPopulatorTest {
     LdapBatchDto batchInfo = new LdapBatchDto();
     Set<LdapGroupDto> externalGroups = createSet(externalGroup1);
     for (LdapGroupDto externalGroup : externalGroups) {
-      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.<Map<String, User>>anyObject(),
-        EasyMock.<Map<String, Group>>anyObject(), 
EasyMock.<Set<String>>anyObject(), anyBoolean());
+      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.anyObject(),
+        EasyMock.anyObject(), EasyMock.anyObject(), anyBoolean());
       expectLastCall();
     }
     expect(populator.getExternalLdapGroupInfo()).andReturn(externalGroups);
@@ -865,7 +864,7 @@ public class AmbariLdapDataPopulatorTest {
     LdapTemplate ldapTemplate = createNiceMock(LdapTemplate.class);
     LdapServerProperties ldapServerProperties = 
createNiceMock(LdapServerProperties.class);
     expect(users.getAllGroups()).andReturn(groupList);
-    expect(users.getAllUsers()).andReturn(Collections.<User>emptyList());
+    expect(users.getAllUsers()).andReturn(Collections.emptyList());
 
     replay(ldapTemplate, ldapServerProperties, users, configuration);
     replay(group1, group2, group3);
@@ -883,8 +882,8 @@ public class AmbariLdapDataPopulatorTest {
     LdapBatchDto batchInfo = new LdapBatchDto();
     Set<LdapGroupDto> externalGroups = createSet(externalGroup1, 
externalGroup2);
     for (LdapGroupDto externalGroup : externalGroups) {
-      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.<Map<String, User>>anyObject(),
-        EasyMock.<Map<String, Group>>anyObject(), 
EasyMock.<Set<String>>anyObject(), anyBoolean());
+      populator.refreshGroupMembers(eq(batchInfo), eq(externalGroup), 
EasyMock.anyObject(),
+        EasyMock.anyObject(), EasyMock.anyObject(), anyBoolean());
       expectLastCall();
     }
     expect(populator.getExternalLdapGroupInfo()).andReturn(externalGroups);
@@ -1117,7 +1116,7 @@ public class AmbariLdapDataPopulatorTest {
         .createNiceMock();
 
 
-    
expect(populator.getExternalLdapUserInfo()).andReturn(Collections.<LdapUserDto>emptySet());
+    
expect(populator.getExternalLdapUserInfo()).andReturn(Collections.emptySet());
     replay(populator);
 
     populator.setLdapTemplate(ldapTemplate);
@@ -1228,7 +1227,7 @@ public class AmbariLdapDataPopulatorTest {
         .withConstructor(configuration, users)
         .createNiceMock();
 
-    
expect(populator.getLdapUsers("synced_user1")).andReturn(Collections.<LdapUserDto>emptySet());
+    
expect(populator.getLdapUsers("synced_user1")).andReturn(Collections.emptySet());
     
expect(populator.getLdapUsers("synced_user2")).andReturn(Collections.singleton(createNiceMock(LdapUserDto.class)));
     replay(populator);
 
@@ -1470,7 +1469,7 @@ public class AmbariLdapDataPopulatorTest {
 
     
expect(populator.getLdapUsers("xuser*")).andReturn(createSet(externalUser3, 
externalUser4));
     
expect(populator.getLdapUsers("user1")).andReturn(Collections.singleton(externalUser1));
-    
expect(populator.getLdapUsers("user2")).andReturn(Collections.<LdapUserDto>emptySet());
+    expect(populator.getLdapUsers("user2")).andReturn(Collections.emptySet());
     replay(populator);
 
     populator.setLdapTemplate(ldapTemplate);
@@ -1592,7 +1591,7 @@ public class AmbariLdapDataPopulatorTest {
     ldapGroup.setGroupId(1);
     ldapGroup.setGroupName("ldapGroup");
     ldapGroup.setGroupType(GroupType.LDAP);
-    ldapGroup.setMemberEntities(new HashSet<MemberEntity>());
+    ldapGroup.setMemberEntities(new HashSet<>());
 
     final User ldapUserWithoutGroup = createLdapUserWithoutGroup();
     final User ldapUserWithGroup = createLdapUserWithGroup(ldapGroup);
@@ -1975,9 +1974,9 @@ public class AmbariLdapDataPopulatorTest {
     userEntity.setCreateTime(new Date());
     userEntity.setLdapUser(ldapUser);
     userEntity.setActive(true);
-    userEntity.setMemberEntities(new HashSet<MemberEntity>());
+    userEntity.setMemberEntities(new HashSet<>());
     final PrincipalEntity principalEntity = new PrincipalEntity();
-    principalEntity.setPrivileges(new HashSet<PrivilegeEntity>());
+    principalEntity.setPrivileges(new HashSet<>());
     userEntity.setPrincipal(principalEntity);
     if (group != null) {
       final MemberEntity member = new MemberEntity();

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/serveraction/ServerActionExecutorTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/ServerActionExecutorTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/ServerActionExecutorTest.java
index 4d1b48b..33321db 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/ServerActionExecutorTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/ServerActionExecutorTest.java
@@ -133,7 +133,7 @@ public class ServerActionExecutorTest {
     stage.addServerActionCommand(ManualStageAction.class.getName(),
         null, Role.AMBARI_SERVER_ACTION, RoleCommand.EXECUTE, "cluster1",
         new ServiceComponentHostServerActionEvent(StageUtils.getHostName(), 
System.currentTimeMillis()),
-        Collections.<String, String> emptyMap(), null, null, 1200, false, 
false);
+        Collections.emptyMap(), null, null, 1200, false, false);
 
     final List<Stage> stages = new ArrayList<Stage>() {
       {

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/ADKerberosOperationHandlerTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/ADKerberosOperationHandlerTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/ADKerberosOperationHandlerTest.java
index 49f8d56..483cc0a 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/ADKerberosOperationHandlerTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/ADKerberosOperationHandlerTest.java
@@ -687,7 +687,7 @@ public class ADKerberosOperationHandlerTest extends 
KerberosOperationHandlerTest
 
     replayAll();
 
-    Map<String, String> kerberosConfiguration = new HashMap<String, String>();
+    Map<String, String> kerberosConfiguration = new HashMap<>();
     
kerberosConfiguration.put(ADKerberosOperationHandler.KERBEROS_ENV_LDAP_URL, 
DEFAULT_LDAP_URL);
     
kerberosConfiguration.put(ADKerberosOperationHandler.KERBEROS_ENV_PRINCIPAL_CONTAINER_DN,
 DEFAULT_PRINCIPAL_CONTAINER_DN);
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/FinalizeKerberosServerActionTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/FinalizeKerberosServerActionTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/FinalizeKerberosServerActionTest.java
index 53d2a1b..8b679bf 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/FinalizeKerberosServerActionTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/FinalizeKerberosServerActionTest.java
@@ -149,7 +149,7 @@ public class FinalizeKerberosServerActionTest extends 
EasyMockSupport {
     
expect(executionCommand.getCommandParams()).andReturn(commandParams).anyTimes();
     
expect(executionCommand.getRoleCommand()).andReturn(RoleCommand.EXECUTE).anyTimes();
     
expect(executionCommand.getRole()).andReturn(Role.AMBARI_SERVER_ACTION.name()).anyTimes();
-    
expect(executionCommand.getConfigurationTags()).andReturn(Collections.<String, 
Map<String, String>>emptyMap()).anyTimes();
+    
expect(executionCommand.getConfigurationTags()).andReturn(Collections.emptyMap()).anyTimes();
     
expect(executionCommand.getServiceName()).andReturn("AMBARI_SERVER").anyTimes();
     expect(executionCommand.getTaskId()).andReturn(3L).anyTimes();
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/ab8d58ba/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/KerberosOperationHandlerTest.java
----------------------------------------------------------------------
diff --git 
a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/KerberosOperationHandlerTest.java
 
b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/KerberosOperationHandlerTest.java
index 68f6f6d..88c841c 100644
--- 
a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/KerberosOperationHandlerTest.java
+++ 
b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/kerberos/KerberosOperationHandlerTest.java
@@ -260,7 +260,7 @@ public abstract class KerberosOperationHandlerTest extends 
EasyMockSupport {
     Assert.assertEquals("\\/\\,\\\\\\#\\+\\<\\>\\;\\\"\\=\\ ", 
handler.escapeCharacters("/,\\#+<>;\"= ", specialCharacters, '\\'));
 
     Assert.assertEquals("nothing<>special#here!", 
handler.escapeCharacters("nothing<>special#here!", null, '\\'));
-    Assert.assertEquals("nothing<>special#here!", 
handler.escapeCharacters("nothing<>special#here!", 
Collections.<Character>emptySet(), '\\'));
+    Assert.assertEquals("nothing<>special#here!", 
handler.escapeCharacters("nothing<>special#here!", Collections.emptySet(), 
'\\'));
     Assert.assertEquals("nothing<>special#here!", 
handler.escapeCharacters("nothing<>special#here!", Collections.singleton('?'), 
'\\'));
     Assert.assertEquals("\\A's are special!", handler.escapeCharacters("A's 
are special!", Collections.singleton('A'), '\\'));
   }

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