diff --git a/pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/ReachibilityVertex.java b/pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/ReachabilityVertex.java
similarity index 97%
rename from pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/ReachibilityVertex.java
rename to pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/ReachabilityVertex.java
index 6cacadc..2f0ca45 100644
--- a/pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/ReachibilityVertex.java
+++ b/pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/ReachabilityVertex.java
@@ -46,7 +46,7 @@
 /**
  * Demonstrates the basic Pregel reachibility query implementation, for undirected graph (e.g., Facebook, LinkedIn graph).
  */
-public class ReachibilityVertex extends Vertex<VLongWritable, ByteWritable, FloatWritable, ByteWritable> {
+public class ReachabilityVertex extends Vertex<VLongWritable, ByteWritable, FloatWritable, ByteWritable> {
 
     public static class SimpleReachibilityCombiner extends MessageCombiner<VLongWritable, ByteWritable, ByteWritable> {
         private ByteWritable agg = new ByteWritable();
@@ -209,11 +209,11 @@
     }
 
     public static void main(String[] args) throws Exception {
-        PregelixJob job = new PregelixJob(ReachibilityVertex.class.getSimpleName());
-        job.setVertexClass(ReachibilityVertex.class);
+        PregelixJob job = new PregelixJob(ReachabilityVertex.class.getSimpleName());
+        job.setVertexClass(ReachabilityVertex.class);
         job.setVertexInputFormatClass(TextReachibilityVertexInputFormat.class);
         job.setVertexOutputFormatClass(SimpleReachibilityVertexOutputFormat.class);
-        job.setMessageCombinerClass(ReachibilityVertex.SimpleReachibilityCombiner.class);
+        job.setMessageCombinerClass(ReachabilityVertex.SimpleReachibilityCombiner.class);
         Client.run(args, job);
         System.out.println("reachable? " + readReachibilityResult(job.getConfiguration()));
     }
diff --git a/pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/client/Client.java b/pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/client/Client.java
index 53af127..597ad6e 100644
--- a/pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/client/Client.java
+++ b/pregelix/pregelix-example/src/main/java/edu/uci/ics/pregelix/example/client/Client.java
@@ -28,7 +28,7 @@
 import edu.uci.ics.pregelix.core.base.IDriver.Plan;
 import edu.uci.ics.pregelix.core.driver.Driver;
 import edu.uci.ics.pregelix.example.PageRankVertex;
-import edu.uci.ics.pregelix.example.ReachibilityVertex;
+import edu.uci.ics.pregelix.example.ReachabilityVertex;
 import edu.uci.ics.pregelix.example.ShortestPathsVertex;
 
 public class Client {
@@ -87,8 +87,8 @@
         job.getConfiguration().setLong(PregelixJob.NUM_VERTICE, options.numVertices);
         job.getConfiguration().setLong(PregelixJob.NUM_EDGES, options.numEdges);
         job.getConfiguration().setLong(ShortestPathsVertex.SOURCE_ID, options.sourceId);
-        job.getConfiguration().setLong(ReachibilityVertex.SOURCE_ID, options.sourceId);
-        job.getConfiguration().setLong(ReachibilityVertex.DEST_ID, options.destId);
+        job.getConfiguration().setLong(ReachabilityVertex.SOURCE_ID, options.sourceId);
+        job.getConfiguration().setLong(ReachabilityVertex.DEST_ID, options.destId);
         if (options.numIteration > 0)
             job.getConfiguration().setLong(PageRankVertex.ITERATIONS, options.numIteration);
         return options;
diff --git a/pregelix/pregelix-example/src/test/java/edu/uci/ics/pregelix/example/jobgen/JobGenerator.java b/pregelix/pregelix-example/src/test/java/edu/uci/ics/pregelix/example/jobgen/JobGenerator.java
index 91b9d4f..c0b4a10 100644
--- a/pregelix/pregelix-example/src/test/java/edu/uci/ics/pregelix/example/jobgen/JobGenerator.java
+++ b/pregelix/pregelix-example/src/test/java/edu/uci/ics/pregelix/example/jobgen/JobGenerator.java
@@ -28,8 +28,8 @@
 import edu.uci.ics.pregelix.example.PageRankVertex;
 import edu.uci.ics.pregelix.example.PageRankVertex.SimplePageRankVertexInputFormat;
 import edu.uci.ics.pregelix.example.PageRankVertex.SimplePageRankVertexOutputFormat;
-import edu.uci.ics.pregelix.example.ReachibilityVertex;
-import edu.uci.ics.pregelix.example.ReachibilityVertex.SimpleReachibilityVertexOutputFormat;
+import edu.uci.ics.pregelix.example.ReachabilityVertex;
+import edu.uci.ics.pregelix.example.ReachabilityVertex.SimpleReachibilityVertexOutputFormat;
 import edu.uci.ics.pregelix.example.ShortestPathsVertex;
 import edu.uci.ics.pregelix.example.inputformat.TextConnectedComponentsInputFormat;
 import edu.uci.ics.pregelix.example.inputformat.TextPageRankInputFormat;
@@ -118,30 +118,30 @@
 
     private static void generateReachibilityRealComplex(String jobName, String outputPath) throws IOException {
         PregelixJob job = new PregelixJob(jobName);
-        job.setVertexClass(ReachibilityVertex.class);
+        job.setVertexClass(ReachabilityVertex.class);
         job.setVertexInputFormatClass(TextReachibilityVertexInputFormat.class);
         job.setVertexOutputFormatClass(SimpleReachibilityVertexOutputFormat.class);
-        job.setMessageCombinerClass(ReachibilityVertex.SimpleReachibilityCombiner.class);
+        job.setMessageCombinerClass(ReachabilityVertex.SimpleReachibilityCombiner.class);
         FileInputFormat.setInputPaths(job, HDFS_INPUTPATH2);
         FileOutputFormat.setOutputPath(job, new Path(HDFS_OUTPUTPAH2));
         job.getConfiguration().setLong(PregelixJob.NUM_VERTICE, 23);
-        job.getConfiguration().setLong(ReachibilityVertex.SOURCE_ID, 1);
-        job.getConfiguration().setLong(ReachibilityVertex.DEST_ID, 10);
+        job.getConfiguration().setLong(ReachabilityVertex.SOURCE_ID, 1);
+        job.getConfiguration().setLong(ReachabilityVertex.DEST_ID, 10);
         job.getConfiguration().writeXml(new FileOutputStream(new File(outputPath)));
     }
 
     private static void generateReachibilityRealComplexNoConnectivity(String jobName, String outputPath)
             throws IOException {
         PregelixJob job = new PregelixJob(jobName);
-        job.setVertexClass(ReachibilityVertex.class);
+        job.setVertexClass(ReachabilityVertex.class);
         job.setVertexInputFormatClass(TextReachibilityVertexInputFormat.class);
         job.setVertexOutputFormatClass(SimpleReachibilityVertexOutputFormat.class);
-        job.setMessageCombinerClass(ReachibilityVertex.SimpleReachibilityCombiner.class);
+        job.setMessageCombinerClass(ReachabilityVertex.SimpleReachibilityCombiner.class);
         FileInputFormat.setInputPaths(job, HDFS_INPUTPATH2);
         FileOutputFormat.setOutputPath(job, new Path(HDFS_OUTPUTPAH2));
         job.getConfiguration().setLong(PregelixJob.NUM_VERTICE, 23);
-        job.getConfiguration().setLong(ReachibilityVertex.SOURCE_ID, 1);
-        job.getConfiguration().setLong(ReachibilityVertex.DEST_ID, 25);
+        job.getConfiguration().setLong(ReachabilityVertex.SOURCE_ID, 1);
+        job.getConfiguration().setLong(ReachabilityVertex.DEST_ID, 25);
         job.getConfiguration().writeXml(new FileOutputStream(new File(outputPath)));
     }
 
diff --git a/pregelix/pregelix-example/src/test/resources/jobs/ReachibilityRealComplex.xml b/pregelix/pregelix-example/src/test/resources/jobs/ReachibilityRealComplex.xml
index e59a6f1..0332ec5 100644
--- a/pregelix/pregelix-example/src/test/resources/jobs/ReachibilityRealComplex.xml
+++ b/pregelix/pregelix-example/src/test/resources/jobs/ReachibilityRealComplex.xml
@@ -65,7 +65,7 @@
 <property><name>hadoop.rpc.socket.factory.class.default</name><value>org.apache.hadoop.net.StandardSocketFactory</value></property>
 <property><name>mapred.reduce.tasks</name><value>1</value></property>
 <property><name>topology.node.switch.mapping.impl</name><value>org.apache.hadoop.net.ScriptBasedMapping</value></property>
-<property><name>pregelix.vertexClass</name><value>edu.uci.ics.pregelix.example.ReachibilityVertex</value></property>
+<property><name>pregelix.vertexClass</name><value>edu.uci.ics.pregelix.example.ReachabilityVertex</value></property>
 <property><name>mapred.skip.reduce.max.skip.groups</name><value>0</value></property>
 <property><name>io.file.buffer.size</name><value>4096</value></property>
 <property><name>mapred.jobtracker.maxtasks.per.job</name><value>-1</value></property>
@@ -105,7 +105,7 @@
 <property><name>mapred.task.profile.reduces</name><value>0-2</value></property>
 <property><name>webinterface.private.actions</name><value>false</value></property>
 <property><name>hadoop.tmp.dir</name><value>/tmp/hadoop-${user.name}</value></property>
-<property><name>pregelix.combinerClass</name><value>edu.uci.ics.pregelix.example.ReachibilityVertex$SimpleReachibilityCombiner</value></property>
+<property><name>pregelix.combinerClass</name><value>edu.uci.ics.pregelix.example.ReachabilityVertex$SimpleReachibilityCombiner</value></property>
 <property><name>mapred.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
 <property><name>mapred.skip.attempts.to.start.skipping</name><value>2</value></property>
 <property><name>mapred.temp.dir</name><value>${hadoop.tmp.dir}/mapred/temp</value></property>
@@ -119,7 +119,7 @@
 <property><name>mapred.line.input.format.linespermap</name><value>1</value></property>
 <property><name>job.end.retry.attempts</name><value>0</value></property>
 <property><name>ipc.client.idlethreshold</name><value>4000</value></property>
-<property><name>pregelix.vertexOutputFormatClass</name><value>edu.uci.ics.pregelix.example.ReachibilityVertex$SimpleReachibilityVertexOutputFormat</value></property>
+<property><name>pregelix.vertexOutputFormatClass</name><value>edu.uci.ics.pregelix.example.ReachabilityVertex$SimpleReachibilityVertexOutputFormat</value></property>
 <property><name>mapred.reduce.copy.backoff</name><value>300</value></property>
 <property><name>mapred.map.tasks.speculative.execution</name><value>true</value></property>
 <property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>
diff --git a/pregelix/pregelix-example/src/test/resources/jobs/ReachibilityRealComplexNoConnectivity.xml b/pregelix/pregelix-example/src/test/resources/jobs/ReachibilityRealComplexNoConnectivity.xml
index 17108e6..4f280fc 100644
--- a/pregelix/pregelix-example/src/test/resources/jobs/ReachibilityRealComplexNoConnectivity.xml
+++ b/pregelix/pregelix-example/src/test/resources/jobs/ReachibilityRealComplexNoConnectivity.xml
@@ -65,7 +65,7 @@
 <property><name>hadoop.rpc.socket.factory.class.default</name><value>org.apache.hadoop.net.StandardSocketFactory</value></property>
 <property><name>mapred.reduce.tasks</name><value>1</value></property>
 <property><name>topology.node.switch.mapping.impl</name><value>org.apache.hadoop.net.ScriptBasedMapping</value></property>
-<property><name>pregelix.vertexClass</name><value>edu.uci.ics.pregelix.example.ReachibilityVertex</value></property>
+<property><name>pregelix.vertexClass</name><value>edu.uci.ics.pregelix.example.ReachabilityVertex</value></property>
 <property><name>mapred.skip.reduce.max.skip.groups</name><value>0</value></property>
 <property><name>io.file.buffer.size</name><value>4096</value></property>
 <property><name>mapred.jobtracker.maxtasks.per.job</name><value>-1</value></property>
@@ -105,7 +105,7 @@
 <property><name>mapred.task.profile.reduces</name><value>0-2</value></property>
 <property><name>webinterface.private.actions</name><value>false</value></property>
 <property><name>hadoop.tmp.dir</name><value>/tmp/hadoop-${user.name}</value></property>
-<property><name>pregelix.combinerClass</name><value>edu.uci.ics.pregelix.example.ReachibilityVertex$SimpleReachibilityCombiner</value></property>
+<property><name>pregelix.combinerClass</name><value>edu.uci.ics.pregelix.example.ReachabilityVertex$SimpleReachibilityCombiner</value></property>
 <property><name>mapred.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
 <property><name>mapred.skip.attempts.to.start.skipping</name><value>2</value></property>
 <property><name>mapred.temp.dir</name><value>${hadoop.tmp.dir}/mapred/temp</value></property>
@@ -119,7 +119,7 @@
 <property><name>mapred.line.input.format.linespermap</name><value>1</value></property>
 <property><name>job.end.retry.attempts</name><value>0</value></property>
 <property><name>ipc.client.idlethreshold</name><value>4000</value></property>
-<property><name>pregelix.vertexOutputFormatClass</name><value>edu.uci.ics.pregelix.example.ReachibilityVertex$SimpleReachibilityVertexOutputFormat</value></property>
+<property><name>pregelix.vertexOutputFormatClass</name><value>edu.uci.ics.pregelix.example.ReachabilityVertex$SimpleReachibilityVertexOutputFormat</value></property>
 <property><name>mapred.reduce.copy.backoff</name><value>300</value></property>
 <property><name>mapred.map.tasks.speculative.execution</name><value>true</value></property>
 <property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>