change byte represent in all method
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/io/LogAlgorithmMessageWritable.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/io/LogAlgorithmMessageWritable.java
index c2d3f1c..0934227 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/io/LogAlgorithmMessageWritable.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/io/LogAlgorithmMessageWritable.java
@@ -53,7 +53,6 @@
 		chainVertexId.reset(ThreeStepLogAlgorithmForPathMergeVertex.kmerSize);
 		adjMap = (byte)0;
 		message = 0;
-		//sourceVertexState = 0;
 	}
 
 	public KmerBytesWritable getSourceVertexId() {
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/io/ValueStateWritable.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/io/ValueStateWritable.java
index 8931dcc..c1be540 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/io/ValueStateWritable.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/io/ValueStateWritable.java
@@ -82,7 +82,6 @@
 
 	@Override
 	public int compareTo(ValueStateWritable o) {
-		// TODO Auto-generated method stub
 		return 0;
 	}
 	
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/TwoStepLogAlgorithmForPathMergeVertex.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/TwoStepLogAlgorithmForPathMergeVertex.java
index 2bec590..ca5d56f 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/TwoStepLogAlgorithmForPathMergeVertex.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/TwoStepLogAlgorithmForPathMergeVertex.java
@@ -81,7 +81,7 @@
 	}
 	
 	public VKmerBytesWritable getNextDestVertexIdFromBitmap(KmerBytesWritable chainVertexId, byte adjMap){
-		return getDestVertexIdFromChain(chainVertexId, adjMap);//GeneCode.getGeneCodeFromBitMap((byte)(adjMap & 0x0F)
+		return getDestVertexIdFromChain(chainVertexId, adjMap);
 	}
 	
 	public VKmerBytesWritable getDestVertexIdFromChain(KmerBytesWritable chainVertexId, byte adjMap){
@@ -183,7 +183,6 @@
 		}
 		destVertexId.set(msg.getSourceVertexId());
 		msg.set(null, getVertexValue().getMergeChain(), getVertexValue().getAdjMap(), msg.getMessage());
-		//msg.set(msg.getSourceVertexId(), getVertexValue().getMergeChain(), getVertexValue().getAdjMap(), msg.getMessage(), getVertexValue().getState());
 		setMessageType(msg.getMessage());
 		sendMsg(destVertexId,msg);
 	}
@@ -243,13 +242,11 @@
 	public void startSendMsg(){
 		if(GraphVertexOperation.isHeadVertex(getVertexValue().getAdjMap())){
 			msg.set(null, null, (byte)0, Message.START);
-			//msg.set(getVertexId(), chainVertexId, (byte)0, Message.START, State.NON_VERTEX); //msg.set(null, (byte)0, chainVertexId, Message.START, State.NON_VERTEX);
 			sendMsgToAllNextNodes(getVertexId(), getVertexValue().getAdjMap());
 			voteToHalt();
 		}
 		if(GraphVertexOperation.isRearVertex(getVertexValue().getAdjMap())){
 			msg.set(null, null, (byte)0, Message.END);
-			//msg.set(getVertexId(), chainVertexId, (byte)0, Message.END, State.NON_VERTEX);
 			sendMsgToAllPreviousNodes(getVertexId(), getVertexValue().getAdjMap());
 			voteToHalt();
 		}