diff --git a/apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/graph/TraceStreamGraph.java b/apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/graph/TraceStreamGraph.java
index 117acdea864e..73afc1876c5f 100644
--- a/apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/graph/TraceStreamGraph.java
+++ b/apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/graph/TraceStreamGraph.java
@@ -20,21 +20,14 @@
 
 import org.skywalking.apm.collector.agent.stream.parser.standardization.SegmentStandardization;
 import org.skywalking.apm.collector.agent.stream.parser.standardization.SegmentStandardizationWorker;
-import org.skywalking.apm.collector.agent.stream.service.graph.ServiceGraphNodeIdDefine;
 import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationComponentAggregationWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationComponentPersistenceWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationComponentRemoteWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationMappingAggregationWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationMappingPersistenceWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationMappingRemoteWorker;
-import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationReferenceMetricAggregationWorker;
-import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationReferenceMetricPersistenceWorker;
-import org.skywalking.apm.collector.agent.stream.worker.trace.application.ApplicationReferenceMetricRemoteWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.global.GlobalTracePersistenceWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.instance.InstanceMetricPersistenceWorker;
-import org.skywalking.apm.collector.agent.stream.worker.trace.instance.InstanceReferenceMetricAggregationWorker;
-import org.skywalking.apm.collector.agent.stream.worker.trace.instance.InstanceReferenceMetricRemoteWorker;
-import org.skywalking.apm.collector.agent.stream.worker.trace.instance.InstanceReferencePersistenceWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.segment.SegmentCostPersistenceWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.segment.SegmentPersistenceWorker;
 import org.skywalking.apm.collector.agent.stream.worker.trace.service.ServiceEntryAggregationWorker;
@@ -45,7 +38,6 @@
 import org.skywalking.apm.collector.agent.stream.worker.trace.service.ServiceReferenceMetricRemoteWorker;
 import org.skywalking.apm.collector.core.graph.Graph;
 import org.skywalking.apm.collector.core.graph.GraphManager;
-import org.skywalking.apm.collector.core.graph.Node;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.queue.QueueModule;
 import org.skywalking.apm.collector.queue.service.QueueCreatorService;
@@ -71,7 +63,6 @@ public class TraceStreamGraph {
     public static final int INSTANCE_METRIC_GRAPH_ID = 301;
     public static final int APPLICATION_COMPONENT_GRAPH_ID = 302;
     public static final int APPLICATION_MAPPING_GRAPH_ID = 303;
-    public static final int APPLICATION_REFERENCE_METRIC_GRAPH_ID = 304;
     public static final int SERVICE_ENTRY_GRAPH_ID = 305;
     public static final int SERVICE_REFERENCE_GRAPH_ID = 306;
     public static final int SEGMENT_GRAPH_ID = 307;
@@ -162,10 +153,10 @@ private void createInstanceReferenceGraph(Graph<ServiceReferenceMetric> graph) {
         QueueCreatorService<InstanceReferenceMetric> persistenceQueueCreatorService = moduleManager.find(QueueModule.NAME).getService(QueueCreatorService.class);
         RemoteSenderService remoteSenderService = moduleManager.find(RemoteModule.NAME).getService(RemoteSenderService.class);
 
-        Node<?, ServiceReferenceMetric> serviceReferenceMetricNode = graph.toFinder().findNode(ServiceGraphNodeIdDefine.SERVICE_REFERENCE_METRIC_AGGREGATION_NODE_ID, ServiceReferenceMetric.class);
-        serviceReferenceMetricNode.addNext(new InstanceReferenceMetricAggregationWorker.Factory(moduleManager, aggregationQueueCreatorService).create(workerCreateListener))
-            .addNext(new InstanceReferenceMetricRemoteWorker.Factory(moduleManager, remoteSenderService, SERVICE_REFERENCE_GRAPH_ID).create(workerCreateListener))
-            .addNext(new InstanceReferencePersistenceWorker.Factory(moduleManager, persistenceQueueCreatorService).create(workerCreateListener));
+//        Node<?, ServiceReferenceMetric> serviceReferenceMetricNode = graph.toFinder().findNode(ServiceGraphNodeIdDefine.SERVICE_REFERENCE_METRIC_AGGREGATION_NODE_ID, ServiceReferenceMetric.class);
+//        serviceReferenceMetricNode.addNext(new InstanceReferenceMetricAggregationWorker.Factory(moduleManager, aggregationQueueCreatorService).create(workerCreateListener))
+//            .addNext(new InstanceReferenceMetricRemoteWorker.Factory(moduleManager, remoteSenderService, SERVICE_REFERENCE_GRAPH_ID).create(workerCreateListener))
+//            .addNext(new InstanceReferencePersistenceWorker.Factory(moduleManager, persistenceQueueCreatorService).create(workerCreateListener));
 
         createApplicationReferenceMetricGraph(graph);
     }
diff --git a/apm-collector/apm-collector-alerting/collector-alerting-define/pom.xml b/apm-collector/apm-collector-alerting/collector-alerting-define/pom.xml
index 427e656e245e..be7530c6c3f2 100644
--- a/apm-collector/apm-collector-alerting/collector-alerting-define/pom.xml
+++ b/apm-collector/apm-collector-alerting/collector-alerting-define/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <artifactId>apm-collector-alerting</artifactId>
         <groupId>org.skywalking</groupId>
-        <version>3.3.0-2017</version>
+        <version>5.0-2018-preview</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-collector/apm-collector-alerting/collector-alerting-provider/pom.xml b/apm-collector/apm-collector-alerting/collector-alerting-provider/pom.xml
index 457f1c2c5139..82f00c755ac1 100644
--- a/apm-collector/apm-collector-alerting/collector-alerting-provider/pom.xml
+++ b/apm-collector/apm-collector-alerting/collector-alerting-provider/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <artifactId>apm-collector-alerting</artifactId>
         <groupId>org.skywalking</groupId>
-        <version>3.3.0-2017</version>
+        <version>5.0-2018-preview</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-collector/apm-collector-alerting/pom.xml b/apm-collector/apm-collector-alerting/pom.xml
index d72721195181..745fb8b6ea1a 100644
--- a/apm-collector/apm-collector-alerting/pom.xml
+++ b/apm-collector/apm-collector-alerting/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <artifactId>apm-collector</artifactId>
         <groupId>org.skywalking</groupId>
-        <version>3.3.0-2017</version>
+        <version>5.0-2018-preview</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-collector/apm-collector-configuration/collector-configuration-define/pom.xml b/apm-collector/apm-collector-configuration/collector-configuration-define/pom.xml
index 3d3db6f87f37..bd5f21188b4e 100644
--- a/apm-collector/apm-collector-configuration/collector-configuration-define/pom.xml
+++ b/apm-collector/apm-collector-configuration/collector-configuration-define/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <artifactId>apm-collector-configuration</artifactId>
         <groupId>org.skywalking</groupId>
-        <version>3.3.0-2017</version>
+        <version>5.0-2018-preview</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-collector/apm-collector-configuration/collector-configuration-provider/pom.xml b/apm-collector/apm-collector-configuration/collector-configuration-provider/pom.xml
index 69c7045f67d8..d99d9f753bf7 100644
--- a/apm-collector/apm-collector-configuration/collector-configuration-provider/pom.xml
+++ b/apm-collector/apm-collector-configuration/collector-configuration-provider/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <artifactId>apm-collector-configuration</artifactId>
         <groupId>org.skywalking</groupId>
-        <version>3.3.0-2017</version>
+        <version>5.0-2018-preview</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-collector/apm-collector-configuration/pom.xml b/apm-collector/apm-collector-configuration/pom.xml
index 1f5ccaf0fd6b..2b03e511ac90 100644
--- a/apm-collector/apm-collector-configuration/pom.xml
+++ b/apm-collector/apm-collector-configuration/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <artifactId>apm-collector</artifactId>
         <groupId>org.skywalking</groupId>
-        <version>3.3.0-2017</version>
+        <version>5.0-2018-preview</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-collector/apm-collector-stream/src/main/java/org/skywalking/apm/collector/stream/worker/impl/data/DataCache.java b/apm-collector/apm-collector-stream/src/main/java/org/skywalking/apm/collector/stream/worker/impl/data/DataCache.java
index 1514bdf6b4a1..c5df260ed9e9 100644
--- a/apm-collector/apm-collector-stream/src/main/java/org/skywalking/apm/collector/stream/worker/impl/data/DataCache.java
+++ b/apm-collector/apm-collector-stream/src/main/java/org/skywalking/apm/collector/stream/worker/impl/data/DataCache.java
@@ -24,11 +24,11 @@
 /**
  * @author peng-yongsheng
  */
-public class DataCache<DataImpl extends Data> extends Window<DataCollection<DataImpl>> {
+public class DataCache<DATA_IMPL extends Data> extends Window<DataCollection<DATA_IMPL>> {
 
-    private DataCollection<DataImpl> lockedDataCollection;
+    private DataCollection<DATA_IMPL> lockedDataCollection;
 
-    @Override public DataCollection<DataImpl> collectionInstance() {
+    @Override public DataCollection<DATA_IMPL> collectionInstance() {
         return new DataCollection<>();
     }
 
@@ -40,7 +40,7 @@ public Data get(String id) {
         return lockedDataCollection.get(id);
     }
 
-    public void put(String id, DataImpl data) {
+    public void put(String id, DATA_IMPL data) {
         lockedDataCollection.put(id, data);
     }
 
diff --git a/apm-collector/apm-collector-stream/src/main/java/org/skywalking/apm/collector/stream/worker/impl/data/DataCollection.java b/apm-collector/apm-collector-stream/src/main/java/org/skywalking/apm/collector/stream/worker/impl/data/DataCollection.java
index faa69668e6fc..e03e176f78f0 100644
--- a/apm-collector/apm-collector-stream/src/main/java/org/skywalking/apm/collector/stream/worker/impl/data/DataCollection.java
+++ b/apm-collector/apm-collector-stream/src/main/java/org/skywalking/apm/collector/stream/worker/impl/data/DataCollection.java
@@ -26,8 +26,8 @@
 /**
  * @author peng-yongsheng
  */
-public class DataCollection<DataImpl extends Data> implements Collection<Map<String, DataImpl>> {
-    private Map<String, DataImpl> data;
+public class DataCollection<DATA_IMPL extends Data> implements Collection<Map<String, DATA_IMPL>> {
+    private Map<String, DATA_IMPL> data;
     private volatile boolean writing;
     private volatile boolean reading;
 
@@ -65,11 +65,11 @@ boolean containsKey(String key) {
         return data.containsKey(key);
     }
 
-    void put(String key, DataImpl value) {
+    void put(String key, DATA_IMPL value) {
         data.put(key, value);
     }
 
-    public DataImpl get(String key) {
+    public DATA_IMPL get(String key) {
         return data.get(key);
     }
 
@@ -81,7 +81,7 @@ public DataImpl get(String key) {
         data.clear();
     }
 
-    public Map<String, DataImpl> collection() {
+    public Map<String, DATA_IMPL> collection() {
         return data;
     }
 }