diff --git a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/MeteringAgent.java b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/MeteringAgent.java
index 0e81e23..6475bf7 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/MeteringAgent.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/MeteringAgent.java
@@ -53,7 +53,7 @@
      *
      * @param primitiveName Type of primitive to be metered
      * @param objName Global name of the primitive
-     * @param activated
+     * @param activated boolean flag for whether metering is enabled or not
      */
     public MeteringAgent(String primitiveName, String objName, boolean activated) {
         checkNotNull(objName, "Object name cannot be null");
@@ -75,6 +75,7 @@
      * Initializes a specific timer for a given operation.
      *
      * @param op Specific operation being metered
+     * @return timer context
      */
     public Context startTimer(String op) {
         if (!activated) {
@@ -98,8 +99,8 @@
         /**
          * Constructs Context.
          *
-         * @param context
-         * @param operation
+         * @param context context
+         * @param operation operation name
          */
         public Context(Timer.Context context, String operation) {
             this.context = context;
@@ -108,7 +109,7 @@
 
         /**
          * Stops timer given a specific context and updates all related metrics.
-         * @param e
+         * @param e throwable
          */
         public void stop(Throwable e) {
             if (!activated) {
diff --git a/core/store/dist/src/main/java/org/onosproject/store/device/impl/ECDeviceStore.java b/core/store/dist/src/main/java/org/onosproject/store/device/impl/ECDeviceStore.java
index f913f4d..2dae55b 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/device/impl/ECDeviceStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/device/impl/ECDeviceStore.java
@@ -589,9 +589,9 @@
     /**
      * Calculate delta statistics by subtracting previous from new statistics.
      *
-     * @param deviceId
-     * @param prvStats
-     * @param newStats
+     * @param deviceId device indentifier
+     * @param prvStats previous port statistics
+     * @param newStats new port statistics
      * @return PortStatistics
      */
     public PortStatistics calcDeltaStats(DeviceId deviceId, PortStatistics prvStats, PortStatistics newStats) {
diff --git a/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java b/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
index a540e56..6345643 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
@@ -867,9 +867,9 @@
     /**
      * Calculate delta statistics by subtracting previous from new statistics.
      *
-     * @param deviceId
-     * @param prvStats
-     * @param newStats
+     * @param deviceId device identifier
+     * @param prvStats previous port statistics
+     * @param newStats new port statistics
      * @return PortStatistics
      */
     public PortStatistics calcDeltaStats(DeviceId deviceId, PortStatistics prvStats, PortStatistics newStats) {