diff --git a/src/main/java/com/profiler/server/dao/hbase/HbaseTerminalStatisticsDao.java b/src/main/java/com/profiler/server/dao/hbase/HbaseTerminalStatisticsDao.java
index 0be24d0c9..6749d2ecf 100644
--- a/src/main/java/com/profiler/server/dao/hbase/HbaseTerminalStatisticsDao.java
+++ b/src/main/java/com/profiler/server/dao/hbase/HbaseTerminalStatisticsDao.java
@@ -3,15 +3,9 @@ package com.profiler.server.dao.hbase;
 import static com.profiler.common.hbase.HBaseTables.TERMINAL_STATISTICS;
 import static com.profiler.common.hbase.HBaseTables.TERMINAL_STATISTICS_CF_COUNTER;
 
-import org.apache.hadoop.hbase.KeyValue;
-import org.apache.hadoop.hbase.client.Get;
-import org.apache.hadoop.hbase.client.Put;
-import org.apache.hadoop.hbase.client.Result;
-import org.apache.hadoop.hbase.util.Bytes;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.hadoop.hbase.RowMapper;
 
 import com.profiler.common.ServiceType;
 import com.profiler.common.hbase.HbaseOperations2;
diff --git a/src/main/java/com/profiler/server/handler/SubSpanHandler.java b/src/main/java/com/profiler/server/handler/SubSpanHandler.java
index 31cd96f03..b68ae3282 100644
--- a/src/main/java/com/profiler/server/handler/SubSpanHandler.java
+++ b/src/main/java/com/profiler/server/handler/SubSpanHandler.java
@@ -10,10 +10,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import com.profiler.common.ServiceType;
 import com.profiler.common.dto.thrift.SubSpan;
 import com.profiler.server.dao.AgentIdApplicationIndexDao;
-import com.profiler.server.dao.ApplicationTraceIndexDao;
-import com.profiler.server.dao.RootTraceIndexDaoDao;
 import com.profiler.server.dao.TerminalStatisticsDao;
-import com.profiler.server.dao.TraceIndexDao;
 import com.profiler.server.dao.TracesDao;
 
 /**
diff --git a/src/main/java/com/profiler/server/util/DatagramPacketPool.java b/src/main/java/com/profiler/server/util/DatagramPacketPool.java
index 60060a123..b74bb0a3f 100644
--- a/src/main/java/com/profiler/server/util/DatagramPacketPool.java
+++ b/src/main/java/com/profiler/server/util/DatagramPacketPool.java
@@ -1,7 +1,6 @@
 package com.profiler.server.util;
 
 import java.net.DatagramPacket;
-import java.util.Queue;
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.BlockingQueue;