diff --git a/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationMapStatisticsCalleeDao.java b/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationMapStatisticsCalleeDao.java
index c94646e0b..597359a39 100644
--- a/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationMapStatisticsCalleeDao.java
+++ b/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationMapStatisticsCalleeDao.java
@@ -70,8 +70,9 @@ public class HbaseApplicationMapStatisticsCalleeDao implements ApplicationMapSta
 		// make row key. rowkey는 나.
 		long acceptedTime = acceptedTimeService.getAcceptedTime();
 		long rowTimeSlot = TimeSlot.getStatisticsRowSlot(acceptedTime);
-        short callerSlotNumber = ApplicationMapStatisticsUtils.getSlotNumber(callerServiceType, elapsed, isError);
         RowKey calleeRowKey = new CallRowKey(calleeApplicationName, calleeServiceType, rowTimeSlot);
+
+        short callerSlotNumber = ApplicationMapStatisticsUtils.getSlotNumber(callerServiceType, elapsed, isError);
         ColumnName callerColumnName = new CallColumnName(callerServiceType, callerApplicationName, calleeHost, callerSlotNumber);
 		if (useBulk) {
             RowInfo rowInfo = new DefaultRowInfo(calleeRowKey, callerColumnName);
diff --git a/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationMapStatisticsCallerDao.java b/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationMapStatisticsCallerDao.java
index 33c0c4e29..655c23ad1 100644
--- a/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationMapStatisticsCallerDao.java
+++ b/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationMapStatisticsCallerDao.java
@@ -75,9 +75,11 @@ public class HbaseApplicationMapStatisticsCallerDao implements ApplicationMapSta
 		// make row key. rowkey는 나.
 		long acceptedTime = acceptedTimeService.getAcceptedTime();
 		long rowTimeSlot = TimeSlot.getStatisticsRowSlot(acceptedTime);
-        short calleeSlotNumber = ApplicationMapStatisticsUtils.getSlotNumber(calleeServiceType, elapsed, isError);
         RowKey callerRowKey = new CallRowKey(callerApplicationName, callerServiceType, rowTimeSlot);
+
+        short calleeSlotNumber = ApplicationMapStatisticsUtils.getSlotNumber(calleeServiceType, elapsed, isError);
         ColumnName calleeColumnName = new CallColumnName(calleeServiceType, calleeApplicationName, callerHost, calleeSlotNumber);
+
 		if (useBulk) {
             RowInfo rowInfo = new DefaultRowInfo(callerRowKey, calleeColumnName);
             counter.increment(rowInfo, 1L);
diff --git a/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationStatisticsDao.java b/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationStatisticsDao.java
index 111beab32..b3052a0e2 100644
--- a/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationStatisticsDao.java
+++ b/src/main/java/com/nhn/pinpoint/collector/dao/hbase/HbaseApplicationStatisticsDao.java
@@ -68,6 +68,11 @@ public class HbaseApplicationStatisticsDao implements ApplicationStatisticsDao {
 			logger.debug("[UpdatingApplicationMapStatistics] " + applicationName + ", " + ServiceType.findServiceType(serviceType) + ", " + agentId + ", " + elapsed + ", " + isError);
 		}
 
+        // agentId는 null이 될수 있음.
+        if (agentId == null) {
+            agentId = "";
+        }
+
 		// make row key. rowkey는 나.
 		long acceptedTime = acceptedTimeService.getAcceptedTime();
         long rowTimeSlot = TimeSlot.getStatisticsRowSlot(acceptedTime);
diff --git a/src/main/java/com/nhn/pinpoint/collector/handler/SpanHandler.java b/src/main/java/com/nhn/pinpoint/collector/handler/SpanHandler.java
index 48dbcb0a8..d5eb453c8 100644
--- a/src/main/java/com/nhn/pinpoint/collector/handler/SpanHandler.java
+++ b/src/main/java/com/nhn/pinpoint/collector/handler/SpanHandler.java
@@ -109,7 +109,7 @@ public class SpanHandler implements SimpleHandler {
 				}
 			}
 		} catch (Exception e) {
-			logger.warn("Span handle error. Caused:{}", e.getMessage(), e);
+			logger.warn("Span handle error. Caused:{}. Span:{}", new Object[] {e.getMessage(), tbase, e});
 		}
 	}
 }
diff --git a/src/main/java/com/nhn/pinpoint/collector/receiver/udp/UDPReceiver.java b/src/main/java/com/nhn/pinpoint/collector/receiver/udp/UDPReceiver.java
index be674a340..9caaa26a1 100644
--- a/src/main/java/com/nhn/pinpoint/collector/receiver/udp/UDPReceiver.java
+++ b/src/main/java/com/nhn/pinpoint/collector/receiver/udp/UDPReceiver.java
@@ -206,8 +206,9 @@ public class UDPReceiver implements DataReceiver {
         	Timer.Context time = timer.time();
         	
             HeaderTBaseDeserializer deserializer = this.deserializer.get();
+            TBase<?, ?> tBase = null;
             try {
-                TBase<?, ?> tBase = deserializer.deserialize(packet.getData());
+                tBase = deserializer.deserialize(packet.getData());
                 // dispatch는 비지니스 로직 실행을 의미.
                 dispatchHandler.dispatch(tBase, packet.getData(), Header.HEADER_SIZE, packet.getLength());
             } catch (TException e) {
@@ -220,7 +221,7 @@ public class UDPReceiver implements DataReceiver {
             } catch (Exception e) {
                 // 잘못된 header가 도착할 경우 발생하는 케이스가 있음.
                 if (logger.isWarnEnabled()) {
-                    logger.warn("Unexpected error. SendSocketAddress:{} Cause:{}", new Object[]{packet.getSocketAddress(), e.getMessage(), e});
+                    logger.warn("Unexpected error. SendSocketAddress:{} Cause:{} tbase:{}", new Object[]{packet.getSocketAddress(), e.getMessage(), e, tBase});
                 }
                 if (logger.isDebugEnabled()) {
                     logger.debug("packet dump hex:{}", PacketUtils.dumpDatagramPacket(packet));
diff --git a/src/main/java/com/nhn/pinpoint/collector/spring/ApplicationContextUtils.java b/src/main/java/com/nhn/pinpoint/collector/spring/ApplicationContextUtils.java
index d67ebbb02..d5189f728 100644
--- a/src/main/java/com/nhn/pinpoint/collector/spring/ApplicationContextUtils.java
+++ b/src/main/java/com/nhn/pinpoint/collector/spring/ApplicationContextUtils.java
@@ -17,7 +17,7 @@ public class ApplicationContextUtils {
     }
 
     public static DispatchHandler getDispatchHandler(AbstractApplicationContext context) {
-        return context.getBean("DispatchHandler", DispatchHandler.class);
+        return context.getBean("dispatchHandler", DispatchHandler.class);
     }
 
     private static GenericApplicationContext createContext0(String contextClassPath) {
diff --git a/src/main/resources/applicationContext.xml b/src/main/resources/applicationContext.xml
index 25630d5c8..0e5b5b528 100644
--- a/src/main/resources/applicationContext.xml
+++ b/src/main/resources/applicationContext.xml
@@ -41,7 +41,7 @@
 
     <import resource="classpath:applicationContext-hbase.xml"></import>
 
-    <bean id="DispatchHandler" class="com.nhn.pinpoint.collector.receiver.DispatchHandler"></bean>
+    <bean id="dispatchHandler" class="com.nhn.pinpoint.collector.receiver.DispatchHandler"></bean>
 
 
     <bean id="daoAutoFlusher" class="com.nhn.pinpoint.collector.dao.AutoFlusher" init-method="initialize" destroy-method="shutdown">