diff --git a/core/store/dist/src/main/java/org/onosproject/store/group/impl/DistributedGroupStore.java b/core/store/dist/src/main/java/org/onosproject/store/group/impl/DistributedGroupStore.java
index 6e8b126..98a3f02 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/group/impl/DistributedGroupStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/group/impl/DistributedGroupStore.java
@@ -19,14 +19,6 @@
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Sets;
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Modified;
-import org.apache.felix.scr.annotations.Property;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onlab.util.KryoNamespace;
 import org.onosproject.cfg.ComponentConfigService;
 import org.onosproject.cluster.ClusterService;
@@ -57,6 +49,7 @@
 import org.onosproject.store.cluster.messaging.ClusterCommunicationService;
 import org.onosproject.store.serializers.KryoNamespaces;
 import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.DistributedPrimitive.Status;
 import org.onosproject.store.service.MapEvent;
 import org.onosproject.store.service.MapEventListener;
 import org.onosproject.store.service.MultiValuedTimestamp;
@@ -64,8 +57,13 @@
 import org.onosproject.store.service.StorageService;
 import org.onosproject.store.service.Topic;
 import org.onosproject.store.service.Versioned;
-import org.onosproject.store.service.DistributedPrimitive.Status;
 import org.osgi.service.component.ComponentContext;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Modified;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 
 import java.util.ArrayList;
@@ -101,8 +99,7 @@
  * Manages inventory of group entries using distributed group stores from the
  * storage service.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = GroupStore.class)
 public class DistributedGroupStore
         extends AbstractStore<GroupEvent, GroupStoreDelegate>
         implements GroupStore {
@@ -117,24 +114,24 @@
     private final int dummyId = 0xffffffff;
     private final GroupId dummyGroupId = new GroupId(dummyId);
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ClusterCommunicationService clusterCommunicator;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ClusterService clusterService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected StorageService storageService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected MastershipService mastershipService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ComponentConfigService cfgService;
 
     // Guarantees enabling DriverService before enabling GroupStore
     // (DriverService is used in serializing/de-serializing DefaultGroup)
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected DriverService driverService;
 
     private ScheduledExecutorService executor;
@@ -162,16 +159,16 @@
 
     private static Topic<GroupStoreMessage> groupTopic;
 
-    @Property(name = "garbageCollect", boolValue = GARBAGE_COLLECT,
-            label = "Enable group garbage collection")
+    //@Property(name = "garbageCollect", boolValue = GARBAGE_COLLECT,
+    //        label = "Enable group garbage collection")
     private boolean garbageCollect = GARBAGE_COLLECT;
 
-    @Property(name = "gcThresh", intValue = GC_THRESH,
-            label = "Number of rounds for group garbage collection")
+    //@Property(name = "gcThresh", intValue = GC_THRESH,
+    //        label = "Number of rounds for group garbage collection")
     private int gcThresh = GC_THRESH;
 
-    @Property(name = "allowExtraneousGroups", boolValue = ALLOW_EXTRANEOUS_GROUPS,
-            label = "Allow groups in switches not installed by ONOS")
+    //@Property(name = "allowExtraneousGroups", boolValue = ALLOW_EXTRANEOUS_GROUPS,
+    //        label = "Allow groups in switches not installed by ONOS")
     private boolean allowExtraneousGroups = ALLOW_EXTRANEOUS_GROUPS;
 
     @Activate