diff --git a/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseApiMetaDataDao.java b/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseApiMetaDataDao.java
index e1741285b..d16bdff4c 100644
--- a/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseApiMetaDataDao.java
+++ b/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseApiMetaDataDao.java
@@ -1,18 +1,18 @@
 package com.nhn.hippo.web.dao.hbase;
 
+import java.util.List;
+
+import org.apache.hadoop.hbase.client.Get;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.data.hadoop.hbase.RowMapper;
+import org.springframework.stereotype.Repository;
+
 import com.nhn.hippo.web.dao.ApiMetaDataDao;
-import com.nhn.hippo.web.mapper.ApiMetaDataMapper;
 import com.profiler.common.bo.ApiMetaDataBo;
 import com.profiler.common.hbase.HBaseTables;
 import com.profiler.common.hbase.HbaseOperations2;
 import com.profiler.common.util.RowKeyUtils;
-import org.apache.hadoop.hbase.client.Get;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
 
 /**
  *
@@ -20,13 +20,12 @@ import java.util.List;
 @Repository
 public class HbaseApiMetaDataDao implements ApiMetaDataDao {
 
-    private final Logger logger = LoggerFactory.getLogger(this.getClass());
-
     @Autowired
     private HbaseOperations2 hbaseOperations2;
 
     @Autowired
-    private ApiMetaDataMapper mapper;
+    @Qualifier("apiMetaDataMapper")
+    private RowMapper<List<ApiMetaDataBo>> apiMetaDataMapper;
 
     @Override
     public List<ApiMetaDataBo> getApiMetaData(String agentId, short identifier, int apiId, long time) {
@@ -34,6 +33,6 @@ public class HbaseApiMetaDataDao implements ApiMetaDataDao {
         Get get = new Get(sqlId);
         get.addFamily(HBaseTables.API_METADATA_CF_API);
 
-        return hbaseOperations2.get(HBaseTables.API_METADATA, get, mapper);
+        return hbaseOperations2.get(HBaseTables.API_METADATA, get, apiMetaDataMapper);
     }
 }
diff --git a/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseSqlMetaDataDao.java b/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseSqlMetaDataDao.java
index 9b0f6a0f2..6595cc10a 100644
--- a/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseSqlMetaDataDao.java
+++ b/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseSqlMetaDataDao.java
@@ -1,18 +1,18 @@
 package com.nhn.hippo.web.dao.hbase;
 
+import java.util.List;
+
+import org.apache.hadoop.hbase.client.Get;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.data.hadoop.hbase.RowMapper;
+import org.springframework.stereotype.Repository;
+
 import com.nhn.hippo.web.dao.SqlMetaDataDao;
-import com.nhn.hippo.web.mapper.SqlMetaDataMapper;
 import com.profiler.common.bo.SqlMetaDataBo;
 import com.profiler.common.hbase.HBaseTables;
 import com.profiler.common.hbase.HbaseOperations2;
 import com.profiler.common.util.RowKeyUtils;
-import org.apache.hadoop.hbase.client.Get;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
 
 /**
  *
@@ -20,13 +20,12 @@ import java.util.List;
 @Repository
 public class HbaseSqlMetaDataDao implements SqlMetaDataDao {
 
-    private final Logger logger = LoggerFactory.getLogger(this.getClass());
-
     @Autowired
     private HbaseOperations2 hbaseOperations2;
 
     @Autowired
-    private SqlMetaDataMapper mapper;
+    @Qualifier("sqlMetaDataMapper")
+    private RowMapper<List<SqlMetaDataBo>> sqlMetaDataMapper;
 
     @Override
     public List<SqlMetaDataBo> getSqlMetaData(String agentId, short identifier, int hashCode, long time) {
@@ -34,6 +33,6 @@ public class HbaseSqlMetaDataDao implements SqlMetaDataDao {
         Get get = new Get(sqlId);
         get.addFamily(HBaseTables.SQL_METADATA_CF_SQL);
 
-        return hbaseOperations2.get(HBaseTables.SQL_METADATA, get, mapper);
+        return hbaseOperations2.get(HBaseTables.SQL_METADATA, get, sqlMetaDataMapper);
     }
 }
diff --git a/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseTerminalStatisticsDao.java b/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseTerminalStatisticsDao.java
index 1b457110d..81a69539c 100644
--- a/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseTerminalStatisticsDao.java
+++ b/src/main/java/com/nhn/hippo/web/dao/hbase/HbaseTerminalStatisticsDao.java
@@ -35,13 +35,13 @@ public class HbaseTerminalStatisticsDao implements TerminalStatisticsDao {
 	private HbaseOperations2 hbaseOperations2;
 
 	@Autowired
-	@Qualifier("terminalRequestCountMapper")
-	private RowMapper<Map<String, TerminalStatistics>> terminalRequestCountMapper;
+	@Qualifier("terminalStatisticsMapper")
+	private RowMapper<Map<String, TerminalStatistics>> terminalStatisticsMapper;
 
 	@Override
 	public List<Map<String, TerminalStatistics>> selectTerminal(String applicationName, long from, long to) {
 		Scan scan = createScan(applicationName, from, to);
-        return hbaseOperations2.find(HBaseTables.TERMINAL_STATISTICS, scan, terminalRequestCountMapper);
+        return hbaseOperations2.find(HBaseTables.TERMINAL_STATISTICS, scan, terminalStatisticsMapper);
 	}
 
 	private Scan createScan(String applicationName, long from, long to) {
diff --git a/src/main/java/com/nhn/hippo/web/mapper/ApplicationNameMapper.java b/src/main/java/com/nhn/hippo/web/mapper/ApplicationNameMapper.java
index 37e9a9896..d450e5281 100644
--- a/src/main/java/com/nhn/hippo/web/mapper/ApplicationNameMapper.java
+++ b/src/main/java/com/nhn/hippo/web/mapper/ApplicationNameMapper.java
@@ -1,6 +1,5 @@
 package com.nhn.hippo.web.mapper;
 
-import com.profiler.common.util.BytesUtils;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.springframework.data.hadoop.hbase.RowMapper;
diff --git a/src/main/java/com/nhn/hippo/web/service/AgentIdNotFoundException.java b/src/main/java/com/nhn/hippo/web/service/AgentIdNotFoundException.java
index 3bc5df385..60e779d23 100644
--- a/src/main/java/com/nhn/hippo/web/service/AgentIdNotFoundException.java
+++ b/src/main/java/com/nhn/hippo/web/service/AgentIdNotFoundException.java
@@ -4,7 +4,8 @@ package com.nhn.hippo.web.service;
  *
  */
 public class AgentIdNotFoundException extends RuntimeException {
-    private String agentId;
+	private static final long serialVersionUID = -2017517623014042821L;
+	private String agentId;
     private long startTime;
 
     public AgentIdNotFoundException(String agentId, long startTime) {
diff --git a/src/main/java/com/nhn/hippo/web/vo/RequestMetadataQuery.java b/src/main/java/com/nhn/hippo/web/vo/RequestMetadataQuery.java
index fdb7f68b0..e5814c509 100644
--- a/src/main/java/com/nhn/hippo/web/vo/RequestMetadataQuery.java
+++ b/src/main/java/com/nhn/hippo/web/vo/RequestMetadataQuery.java
@@ -1,7 +1,6 @@
 package com.nhn.hippo.web.vo;
 
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
diff --git a/src/main/resources/root-context.xml b/src/main/resources/root-context.xml
index 7dee1e37b..aac5a2941 100644
--- a/src/main/resources/root-context.xml
+++ b/src/main/resources/root-context.xml
@@ -21,9 +21,4 @@
     <bean id="spanAnnotationMapper" class="com.nhn.hippo.web.mapper.SpanMapper">
         <property name="annotationMapper" ref="annotationMapper"/>
     </bean>
-    <bean id="applicationNameMapper" class="com.nhn.hippo.web.mapper.ApplicationNameMapper"></bean>
-    <bean id="agentIdMapper" class="com.nhn.hippo.web.mapper.AgentIdMapper"></bean>
-    <bean id="terminalRequestCountMapper" class="com.nhn.hippo.web.mapper.TerminalStatisticsMapper"></bean>
-
-    <bean id="sqlMetaDataMapper" class="com.nhn.hippo.web.mapper.SqlMetaDataMapper"></bean>
 </beans>