diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/node/analysis/NodeMappingHourAnalysis.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/node/analysis/NodeMappingHourAnalysis.java
index 12e568db6..e61abc25d 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/node/analysis/NodeMappingHourAnalysis.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/node/analysis/NodeMappingHourAnalysis.java
@@ -10,7 +10,6 @@ import com.a.eye.skywalking.collector.worker.node.persistence.NodeMappingHourAgg
 import com.a.eye.skywalking.collector.worker.segment.SegmentPost;
 import com.a.eye.skywalking.collector.worker.segment.entity.Segment;
 import com.a.eye.skywalking.collector.worker.storage.RecordData;
-import com.a.eye.skywalking.trace.TraceSegment;
 
 /**
  * @author pengys5