diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/AppIdEvent.java b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/AppIdEvent.java
new file mode 100644
index 0000000..3dd626c
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/AppIdEvent.java
@@ -0,0 +1,37 @@
+/*
+ * 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.onlab.onos.store.core.impl;
+
+import org.onlab.onos.core.ApplicationId;
+import org.onlab.onos.event.AbstractEvent;
+
+/**
+ * Application ID event.
+ */
+public class AppIdEvent extends AbstractEvent<AppIdEvent.Type, ApplicationId> {
+
+    public enum Type {
+        APP_REGISTERED
+    }
+
+    protected AppIdEvent(Type type, ApplicationId subject) {
+        super(type, subject);
+    }
+
+}
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/AppIdStoreDelegate.java b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/AppIdStoreDelegate.java
new file mode 100644
index 0000000..e05daf2
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/AppIdStoreDelegate.java
@@ -0,0 +1,27 @@
+/*
+ * 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.onlab.onos.store.core.impl;
+
+import org.onlab.onos.store.StoreDelegate;
+
+/**
+ * Application ID store delegate.
+ */
+public interface AppIdStoreDelegate extends StoreDelegate<AppIdEvent> {
+}
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/DistributedApplicationIdStore.java b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/DistributedApplicationIdStore.java
new file mode 100644
index 0000000..354ef49
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/DistributedApplicationIdStore.java
@@ -0,0 +1,149 @@
+/*
+ * 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.onlab.onos.store.core.impl;
+
+import com.google.common.collect.ImmutableSet;
+import com.hazelcast.core.EntryEvent;
+import com.hazelcast.core.EntryListener;
+import com.hazelcast.core.IAtomicLong;
+import com.hazelcast.core.MapEvent;
+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.Service;
+import org.onlab.onos.core.ApplicationId;
+import org.onlab.onos.core.ApplicationIdStore;
+import org.onlab.onos.core.DefaultApplicationId;
+import org.onlab.onos.store.hz.AbstractHazelcastStore;
+import org.onlab.onos.store.hz.SMap;
+import org.onlab.onos.store.serializers.KryoNamespaces;
+import org.onlab.onos.store.serializers.KryoSerializer;
+import org.onlab.util.KryoNamespace;
+
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Simple implementation of the application ID registry using in-memory
+ * structures.
+ */
+@Component(immediate = true)
+@Service
+public class DistributedApplicationIdStore
+        extends AbstractHazelcastStore<AppIdEvent, AppIdStoreDelegate>
+        implements ApplicationIdStore {
+
+    protected IAtomicLong lastAppId;
+    protected SMap<String, DefaultApplicationId> appIdsByName;
+
+    protected Map<Short, DefaultApplicationId> appIds = new ConcurrentHashMap<>();
+
+
+    @Override
+    @Activate
+    public void activate() {
+        super.activate();
+
+        this.serializer = new KryoSerializer() {
+            @Override
+            protected void setupKryoPool() {
+                serializerPool = KryoNamespace.newBuilder()
+                        .register(KryoNamespaces.API)
+                        .build()
+                        .populate(1);
+            }
+        };
+
+        lastAppId = theInstance.getAtomicLong("applicationId");
+
+        appIdsByName = new SMap<>(theInstance.<byte[], byte[]>getMap("appIdsByName"), this.serializer);
+        appIdsByName.addEntryListener((new RemoteAppIdEventHandler()), true);
+
+        primeAppIds();
+
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        log.info("Stopped");
+    }
+
+    @Override
+    public Set<ApplicationId> getAppIds() {
+        return ImmutableSet.<ApplicationId>copyOf(appIds.values());
+    }
+
+    @Override
+    public ApplicationId getAppId(Short id) {
+        ApplicationId appId = appIds.get(id);
+        if (appId == null) {
+            primeAppIds();
+        }
+        return appId;
+    }
+
+    private synchronized void primeAppIds() {
+        for (DefaultApplicationId appId : appIdsByName.values()) {
+            appIds.put(appId.id(), appId);
+        }
+    }
+
+    @Override
+    public synchronized ApplicationId registerApplication(String name) {
+        DefaultApplicationId appId = appIdsByName.get(name);
+        if (appId == null) {
+            short id = (short) lastAppId.getAndIncrement();
+            appId = new DefaultApplicationId(id, name);
+            appIds.put(id, appId);
+            appIdsByName.put(name, appId);
+        }
+        return appId;
+    }
+
+    private class RemoteAppIdEventHandler implements EntryListener<String, DefaultApplicationId> {
+        @Override
+        public void entryAdded(EntryEvent<String, DefaultApplicationId> event) {
+            DefaultApplicationId appId = event.getValue();
+            appIds.put(appId.id(), appId);
+        }
+
+        @Override
+        public void entryRemoved(EntryEvent<String, DefaultApplicationId> event) {
+        }
+
+        @Override
+        public void entryUpdated(EntryEvent<String, DefaultApplicationId> event) {
+            entryAdded(event);
+        }
+
+        @Override
+        public void entryEvicted(EntryEvent<String, DefaultApplicationId> event) {
+        }
+
+        @Override
+        public void mapEvicted(MapEvent event) {
+        }
+
+        @Override
+        public void mapCleared(MapEvent event) {
+        }
+    }
+}
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/package-info.java b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/package-info.java
new file mode 100644
index 0000000..7613a4f
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/package-info.java
@@ -0,0 +1,23 @@
+/*
+ * 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.
+ */
+
+/**
+ * Implementation of a distributed application ID registry store using Hazelcast.
+ */
+package org.onlab.onos.store.core.impl;
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/mastership/impl/RoleValue.java b/core/store/dist/src/main/java/org/onlab/onos/store/mastership/impl/RoleValue.java
index 7447161..0a3de50 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/mastership/impl/RoleValue.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/mastership/impl/RoleValue.java
@@ -15,7 +15,7 @@
 
 /**
  * A structure that holds node mastership roles associated with a
- * {@link DeviceId}. This structure needs to be locked through IMap.
+ * {@link org.onlab.onos.net.DeviceId}. This structure needs to be locked through IMap.
  */
 final class RoleValue {