diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/LoadGraphVertex.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/LoadGraphVertex.java
index 3b2ef52..e22b20d 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/LoadGraphVertex.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/LoadGraphVertex.java
@@ -10,6 +10,7 @@
 import edu.uci.ics.genomix.pregelix.format.BinaryLoadGraphInputFormat;
 import edu.uci.ics.genomix.pregelix.format.BinaryLoadGraphOutputFormat;
 import edu.uci.ics.genomix.pregelix.io.MessageWritable;
+import edu.uci.ics.genomix.pregelix.io.ValueStateWritable;
 import edu.uci.ics.pregelix.api.graph.Vertex;
 import edu.uci.ics.pregelix.api.job.PregelixJob;
 
@@ -64,7 +65,7 @@
         job.setVertexInputFormatClass(BinaryLoadGraphInputFormat.class); 
         job.setVertexOutputFormatClass(BinaryLoadGraphOutputFormat.class); 
         job.setOutputKeyClass(BytesWritable.class);
-        job.setOutputValueClass(ByteWritable.class);
+        job.setOutputValueClass(ValueStateWritable.class);
         Client.run(args, job);
 	}
 }
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/LogAlgorithmForMergeGraphVertex.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/LogAlgorithmForMergeGraphVertex.java
index 6b41495..19a8fcb 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/LogAlgorithmForMergeGraphVertex.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/LogAlgorithmForMergeGraphVertex.java
@@ -58,6 +58,7 @@
 	/**
 	 * Log Algorithm for path merge graph
 	 */
+	
 	@Override
 	public void compute(Iterator<LogAlgorithmMessageWritable> msgIterator) {
 
@@ -101,7 +102,6 @@
 				}
 				else{
 					tmpMsg = msgIterator.next();
-					
 					if(tmpMsg.getMessage() == Message.START && tmpVal.getState() == State.MID_VERTEX){
 						tmpVal.setState(State.START_VERTEX);
 						setVertexValue(tmpVal);
@@ -113,15 +113,11 @@
 					}
 					else
 						voteToHalt();
-					
-
 				}
 			}
 		}
 		//head node sends message to path node
 		else if(getSuperstep()%3 == 0){
-			//tmpVal = getVertexValue();
-
 			if(getSuperstep() == 3){
 				tmpMsg = new LogAlgorithmMessageWritable();
 				tmpDestVertexId = KmerUtil.shiftKmerWithNextCode(GraphVertexOperation.k, tmpVertexId, 
@@ -133,13 +129,12 @@
 					sendMsg(destVertexId, tmpMsg);
 					voteToHalt();
 				}
-				else if(tmpVal.getState() != State.END_VERTEX){
+				else if(tmpVal.getState() != State.END_VERTEX && tmpVal.getState() != State.FINAL_DELETE){
 					tmpMsg.setMessage(Message.NON);
 					tmpMsg.setSourceVertexId(getVertexId().getBytes());
 					sendMsg(destVertexId,tmpMsg);
 					voteToHalt();
 				}
-				
 			}
 			else{
 				if(msgIterator.hasNext()){
@@ -154,15 +149,13 @@
 						tmpMsg.setMessage(Message.START);
 						tmpMsg.setSourceVertexId(getVertexId().getBytes());
 						sendMsg(destVertexId, tmpMsg);
-
+						voteToHalt();
 					}
-					else if(tmpVal.getState() != State.END_VERTEX){
+					else if(tmpVal.getState() != State.END_VERTEX && tmpVal.getState() != State.FINAL_DELETE){
 						tmpMsg.setMessage(Message.NON);
 						tmpMsg.setSourceVertexId(getVertexId().getBytes());
 						sendMsg(destVertexId,tmpMsg);
-						
 					}
-					
 				}
 			}
 		}
@@ -185,7 +178,7 @@
 				tmpMsg.setSourceVertexState(tmpVal.getState());
 				
 				//kill Message because it has been merged by the head
-				if(tmpVal.getState() == State.END_VERTEX){
+				if(tmpVal.getState() == State.END_VERTEX || tmpVal.getState() == State.FINAL_DELETE){
 					tmpMsg.setMessage(Message.END);
 					tmpVal.setState(State.FINAL_DELETE);
 					setVertexValue(tmpVal);
@@ -200,14 +193,11 @@
 				}
 				destVertexId.set(tmpMsg.getSourceVertexId(), 0, tmpMsg.getSourceVertexId().length);
 				sendMsg(destVertexId,tmpMsg);
-				
 			}
 			else{
-				//String source2 = Kmer.recoverKmerFrom(5, tmpVertexId, 0, tmpVertexId.length);
 				if(getVertexValue().getState() != State.START_VERTEX
-						&& getVertexValue().getState() != State.END_VERTEX){
+						&& getVertexValue().getState() != State.END_VERTEX && getVertexValue().getState() != State.FINAL_DELETE)
 					deleteVertex(getVertexId()); //killSelf because it doesn't receive any message
-				}
 			}
 		}
 		else if(getSuperstep()%3 == 2){
@@ -251,14 +241,11 @@
 						sendMsg(getVertexId(),tmpMsg);
 					}
 				}
-				if(tmpVal.getState() == State.END_VERTEX)
+				if(tmpVal.getState() == State.END_VERTEX || tmpVal.getState() == State.FINAL_DELETE)
 					voteToHalt();
 				if(tmpVal.getState() == State.FINAL_VERTEX){
+					//String source = Kmer.recoverKmerFrom(tmpVal.getLengthOfMergeChain(), tmpVal.getMergeChain(), 0, tmpVal.getMergeChain().length);
 					voteToHalt();
-					/*try {
-						GraphVertexOperation.flushChainToFile(tmpVal.getMergeChain(), 
-								tmpVal.getLengthOfMergeChain(),tmpVertexId);
-					} catch (IOException e) { e.printStackTrace(); }*/
 				}
 			}
 			
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/MergeGraphVertex.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/MergeGraphVertex.java
index d9c74d1..36dc8a1 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/MergeGraphVertex.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/MergeGraphVertex.java
@@ -1,5 +1,6 @@
 package edu.uci.ics.genomix.pregelix;
 
+import java.io.IOException;
 import java.util.Iterator;
 
 import org.apache.hadoop.io.BytesWritable;
@@ -125,11 +126,11 @@
 					tmpVertexValue.setLengthOfMergeChain(tmpMsg.getLengthOfChain());
 					tmpVertexValue.setMergeChain(tmpMsg.getChainVertexId());
 					setVertexValue(tmpVertexValue);
-					/*try {
-						String source = Kmer.recoverKmerFrom(tmpMsg.getLengthOfChain(), tmpMsg.getChainVertexId(), 0, tmpMsg.getChainVertexId().length);
+					try {
+						//String source = Kmer.recoverKmerFrom(tmpMsg.getLengthOfChain(), tmpMsg.getChainVertexId(), 0, tmpMsg.getChainVertexId().length);
 						GraphVertexOperation.flushChainToFile(tmpMsg.getChainVertexId(), 
 								tmpMsg.getLengthOfChain(),tmpVertexId);
-					} catch (IOException e) { e.printStackTrace(); }*/
+					} catch (IOException e) { e.printStackTrace(); }
 				}
 			}
 		}
@@ -155,7 +156,6 @@
 				}
 			}
 		}
-		
 		voteToHalt();
 	}
 
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/format/BinaryLoadGraphInputFormat.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/format/BinaryLoadGraphInputFormat.java
index 09d1b6e..4cd22ac 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/format/BinaryLoadGraphInputFormat.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/format/BinaryLoadGraphInputFormat.java
@@ -38,19 +38,12 @@
 @SuppressWarnings("rawtypes")
 class BinaryLoadGraphReader extends
         BinaryVertexReader<BytesWritable, ValueStateWritable, NullWritable, MessageWritable> {
-	public static Logger logger = Logger.getLogger(BinaryLoadGraphReader.class.getName()); 
-	DataLoadLogFormatter formatter = new DataLoadLogFormatter();
-	FileHandler handler;
     private Vertex vertex;
     private BytesWritable vertexId = new BytesWritable();
     private ValueStateWritable vertexValue = new ValueStateWritable();
 
     public BinaryLoadGraphReader(RecordReader<BytesWritable,KmerCountValue> recordReader) {
         super(recordReader);
-		try {
-			handler = new FileHandler("log/" + BinaryLoadGraphReader.class.getName() + ".log");
-		} catch (SecurityException e1) { e1.printStackTrace();} 
-		catch (IOException e1) { e1.printStackTrace();}
     }
 
     @Override
@@ -81,14 +74,6 @@
             KmerCountValue kmerCountValue = getRecordReader().getCurrentValue();
             vertexValue.setValue(kmerCountValue.getAdjBitMap()); 
             vertex.setVertexValue(vertexValue);
-            
-			//log
-			formatter.set(vertexId, kmerCountValue, GraphVertexOperation.k);
-			if(logger.getHandlers() != null)
-				logger.removeHandler(handler);
-			handler.setFormatter(formatter);
-			logger.addHandler(handler);
-			logger.info("");
         }
         
         return vertex;
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/format/LogAlgorithmForMergeGraphInputFormat.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/format/LogAlgorithmForMergeGraphInputFormat.java
index 3fd3345..4834e56 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/format/LogAlgorithmForMergeGraphInputFormat.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/format/LogAlgorithmForMergeGraphInputFormat.java
@@ -73,12 +73,6 @@
 	            vertexValue.setValue(kmerCountValue.getAdjBitMap()); 
 	            vertexValue.setState(State.NON_VERTEX);
 	            vertex.setVertexValue(vertexValue);
-	            
-	        	/*String kmer = BitwiseOperation.convertBytesToBinaryStringKmer(vertexId.getBytes(),GraphVertexOperation.k);
-			    System.out.println("key: " + kmer);
-			    System.out.println("code: " + GraphVertexOperation.convertBinaryStringToGenecode(kmer));
-			    System.out.println("value: " + BitwiseOperation.convertByteToBinaryString(kmerCountValue.getAdjBitMap()));
-			    System.out.println();*/
             }
             
             return vertex;
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/graph/Graph.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/graph/Graph.java
index fe95252..a63c307 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/graph/Graph.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/graph/Graph.java
@@ -53,6 +53,6 @@
 	public static void main(String[] args) throws Exception
 	{
 		Graph g = new Graph();
-		g.start("SinglePath");
+		g.start("Path");
 	}
 }
diff --git a/genomix/genomix-pregelix/src/test/java/edu/uci/ics/genomix/pregelix/JobRun/RunJobTestSuite.java b/genomix/genomix-pregelix/src/test/java/edu/uci/ics/genomix/pregelix/JobRun/RunJobTestSuite.java
index bd522a9..dac588d 100644
--- a/genomix/genomix-pregelix/src/test/java/edu/uci/ics/genomix/pregelix/JobRun/RunJobTestSuite.java
+++ b/genomix/genomix-pregelix/src/test/java/edu/uci/ics/genomix/pregelix/JobRun/RunJobTestSuite.java
@@ -40,7 +40,7 @@
 	private static final String PATH_TO_ONLY = "src/test/resources/only.txt";
 	private static final String FILE_EXTENSION_OF_RESULTS = "result";
 
-	private static final String DATA_PATH = "data/result/TreePath";//sequenceShortFileMergeTest
+	private static final String DATA_PATH = "data/test_55_small/part-0";//sequenceShortFileMergeTest
 	private static final String HDFS_PATH = "/webmap/";
 	
 	private static final String HYRACKS_APP_NAME = "pregelix";