diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/persistence/SegmentSave.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/persistence/SegmentSave.java
index 1e32ded4628118385d7ff01c566b27bc27d5cc51..203e4798ef7f0f73b9ec95851d7b1a16655cd3d6 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/persistence/SegmentSave.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/persistence/SegmentSave.java
@@ -9,23 +9,22 @@ import com.a.eye.skywalking.collector.worker.PersistenceMember;
 import com.a.eye.skywalking.collector.worker.config.CacheSizeConfig;
 import com.a.eye.skywalking.collector.worker.segment.SegmentIndex;
 import com.a.eye.skywalking.collector.worker.segment.entity.Segment;
-import com.a.eye.skywalking.collector.worker.storage.*;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-import org.elasticsearch.action.index.IndexRequestBuilder;
-import org.elasticsearch.client.Client;
-
+import com.a.eye.skywalking.collector.worker.storage.AbstractIndex;
+import com.a.eye.skywalking.collector.worker.storage.EsClient;
+import com.a.eye.skywalking.collector.worker.storage.PersistenceWorkerListener;
+import com.a.eye.skywalking.collector.worker.storage.SegmentData;
+import com.a.eye.skywalking.collector.worker.storage.SegmentPersistenceData;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
+import org.elasticsearch.action.index.IndexRequestBuilder;
+import org.elasticsearch.client.Client;
 
 /**
  * @author pengys5
  */
 public class SegmentSave extends PersistenceMember<SegmentPersistenceData, SegmentData> {
 
-    private Logger logger = LogManager.getFormatterLogger(SegmentSave.class);
-
     @Override
     public String esIndex() {
         return SegmentIndex.INDEX;
@@ -46,22 +45,19 @@ public class SegmentSave extends PersistenceMember<SegmentPersistenceData, Segme
         return new SegmentPersistenceData();
     }
 
-    int i = 0;
-
     @Override
     final public void analyse(Object message) throws Exception {
         if (message instanceof Segment) {
             Segment segment = (Segment) message;
             SegmentPersistenceData data = getPersistenceData();
             data.hold();
-            data.getOrCreate(segment.getTraceSegmentId() + i).setSegmentStr(segment.getJsonStr());
+            data.getOrCreate(segment.getTraceSegmentId()).setSegmentStr(segment.getJsonStr());
             if (data.size() >= CacheSizeConfig.Cache.Persistence.SIZE) {
                 persistence(data.asMap());
             }
             data.release();
-            i++;
         } else {
-            logger.error("unhandled message, message instance must Segment, but is %s", message.getClass().toString());
+            logger().error("unhandled message, message instance must Segment, but is %s", message.getClass().toString());
         }
     }
 
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/noderef/analysis/AbstractNodeRefResSumAnalysisTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/noderef/analysis/AbstractNodeRefResSumAnalysisTestCase.java
new file mode 100644
index 0000000000000000000000000000000000000000..9c61e0e0bb97be45b301ba5b29f5a7085b3be74b
--- /dev/null
+++ b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/noderef/analysis/AbstractNodeRefResSumAnalysisTestCase.java
@@ -0,0 +1,95 @@
+package com.a.eye.skywalking.collector.worker.noderef.analysis;
+
+import com.a.eye.skywalking.collector.actor.ClusterWorkerContext;
+import com.a.eye.skywalking.collector.actor.LocalWorkerContext;
+import com.a.eye.skywalking.collector.actor.WorkerRefs;
+import com.a.eye.skywalking.collector.actor.selector.RollingSelector;
+import com.a.eye.skywalking.collector.actor.selector.WorkerSelector;
+import com.a.eye.skywalking.collector.worker.Const;
+import com.a.eye.skywalking.collector.worker.storage.MetricAnalysisData;
+import java.lang.reflect.Field;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author pengys5
+ */
+public class AbstractNodeRefResSumAnalysisTestCase {
+
+    @Test
+    public void analyseResSum() throws Exception {
+        Impl impl = new Impl(Role.INSTANCE, null, null);
+
+        AbstractNodeRefResSumAnalysis.NodeRefResRecord record =
+            new AbstractNodeRefResSumAnalysis.NodeRefResRecord(1, 2, 3, 4);
+        record.setStartTime(10);
+        record.setEndTime(20);
+        record.setError(false);
+
+        String id = 2017 + Const.ID_SPLIT + "A" + Const.ID_SPLIT + "B";
+        record.setNodeRefId(id);
+        Assert.assertEquals(id, record.getNodeRefId());
+
+        impl.analyseResSum(record);
+
+        record.setStartTime(0);
+        record.setEndTime(2000);
+        record.setError(false);
+        impl.analyseResSum(record);
+
+        record.setStartTime(0);
+        record.setEndTime(4000);
+        record.setError(false);
+        impl.analyseResSum(record);
+
+        record.setStartTime(0);
+        record.setEndTime(6000);
+        record.setError(false);
+        impl.analyseResSum(record);
+
+        record.setStartTime(0);
+        record.setEndTime(6000);
+        record.setError(true);
+        impl.analyseResSum(record);
+
+        Field testAField = impl.getClass().getSuperclass().getSuperclass().getDeclaredField("metricAnalysisData");
+        testAField.setAccessible(true);
+
+        MetricAnalysisData metricAnalysisData = (MetricAnalysisData)testAField.get(impl);
+
+        Assert.assertEquals(1L, metricAnalysisData.asMap().get("2017..-..A..-..B").asMap().get("oneSecondLess"));
+        Assert.assertEquals(1L, metricAnalysisData.asMap().get("2017..-..A..-..B").asMap().get("threeSecondLess"));
+        Assert.assertEquals(1L, metricAnalysisData.asMap().get("2017..-..A..-..B").asMap().get("fiveSecondLess"));
+        Assert.assertEquals(1L, metricAnalysisData.asMap().get("2017..-..A..-..B").asMap().get("fiveSecondGreater"));
+        Assert.assertEquals(1L, metricAnalysisData.asMap().get("2017..-..A..-..B").asMap().get("error"));
+        Assert.assertEquals(5L, metricAnalysisData.asMap().get("2017..-..A..-..B").asMap().get("summary"));
+    }
+
+    class Impl extends AbstractNodeRefResSumAnalysis {
+        Impl(Role role, ClusterWorkerContext clusterContext, LocalWorkerContext selfContext) {
+            super(role, clusterContext, selfContext);
+        }
+
+        @Override public void analyse(Object message) throws Exception {
+
+        }
+
+        @Override protected WorkerRefs aggWorkRefs() {
+            return null;
+        }
+    }
+
+    enum Role implements com.a.eye.skywalking.collector.actor.Role {
+        INSTANCE;
+
+        @Override
+        public String roleName() {
+            return Impl.class.getSimpleName();
+        }
+
+        @Override
+        public WorkerSelector workerSelector() {
+            return new RollingSelector();
+        }
+    }
+}