diff --git a/pregelix/pregelix-example/src/test/java/edu/uci/ics/pregelix/example/dataload/DataLoadTest.java b/pregelix/pregelix-example/src/test/java/edu/uci/ics/pregelix/example/dataload/DataLoadTest.java
index 7787347..37f03a5 100644
--- a/pregelix/pregelix-example/src/test/java/edu/uci/ics/pregelix/example/dataload/DataLoadTest.java
+++ b/pregelix/pregelix-example/src/test/java/edu/uci/ics/pregelix/example/dataload/DataLoadTest.java
@@ -37,7 +37,7 @@
 import edu.uci.ics.pregelix.core.jobgen.clusterconfig.ClusterConfig;
 import edu.uci.ics.pregelix.core.util.PregelixHyracksIntegrationUtil;
 import edu.uci.ics.pregelix.example.PageRankVertex;
-import edu.uci.ics.pregelix.example.PageRankVertex.SimplePageRankVertexInputFormat;
+import edu.uci.ics.pregelix.example.PageRankVertex.SimulatedPageRankVertexInputFormat;
 import edu.uci.ics.pregelix.example.util.TestUtils;
 
 @SuppressWarnings("deprecation")
@@ -65,7 +65,7 @@
     public DataLoadTest() throws Exception {
         job = new PregelixJob(GIRAPH_JOB_NAME);
         job.setVertexClass(PageRankVertex.class);
-        job.setVertexInputFormatClass(SimplePageRankVertexInputFormat.class);
+        job.setVertexInputFormatClass(SimulatedPageRankVertexInputFormat.class);
         job.getConfiguration().setClass(PregelixJob.VERTEX_INDEX_CLASS, LongWritable.class, WritableComparable.class);
         job.getConfiguration().setClass(PregelixJob.VERTEX_VALUE_CLASS, DoubleWritable.class, Writable.class);
         job.getConfiguration().setClass(PregelixJob.EDGE_VALUE_CLASS, FloatWritable.class, Writable.class);
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 09684d2..b131edc 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
@@ -26,8 +26,8 @@
 import edu.uci.ics.pregelix.example.ConnectedComponentsVertex;
 import edu.uci.ics.pregelix.example.ConnectedComponentsVertex.SimpleConnectedComponentsVertexOutputFormat;
 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.PageRankVertex.SimulatedPageRankVertexInputFormat;
 import edu.uci.ics.pregelix.example.ReachabilityVertex;
 import edu.uci.ics.pregelix.example.ReachabilityVertex.SimpleReachibilityVertexOutputFormat;
 import edu.uci.ics.pregelix.example.ShortestPathsVertex;
@@ -35,6 +35,7 @@
 import edu.uci.ics.pregelix.example.inputformat.TextPageRankInputFormat;
 import edu.uci.ics.pregelix.example.inputformat.TextReachibilityVertexInputFormat;
 import edu.uci.ics.pregelix.example.inputformat.TextShortestPathsInputFormat;
+import edu.uci.ics.pregelix.example.maximalclique.MaximalCliqueAggregator;
 import edu.uci.ics.pregelix.example.maximalclique.MaximalCliqueVertex;
 import edu.uci.ics.pregelix.example.maximalclique.MaximalCliqueVertex.MaximalCliqueVertexOutputFormat;
 import edu.uci.ics.pregelix.example.maximalclique.TextMaximalCliqueInputFormat;
@@ -157,7 +158,7 @@
     private static void generatePageRankJob(String jobName, String outputPath) throws IOException {
         PregelixJob job = new PregelixJob(jobName);
         job.setVertexClass(PageRankVertex.class);
-        job.setVertexInputFormatClass(SimplePageRankVertexInputFormat.class);
+        job.setVertexInputFormatClass(SimulatedPageRankVertexInputFormat.class);
         job.setMessageCombinerClass(PageRankVertex.SimpleSumCombiner.class);
         job.setVertexOutputFormatClass(SimplePageRankVertexOutputFormat.class);
         FileInputFormat.setInputPaths(job, HDFS_INPUTPATH);
@@ -169,7 +170,7 @@
     private static void generateShortestPathJob(String jobName, String outputPath) throws IOException {
         PregelixJob job = new PregelixJob(jobName);
         job.setVertexClass(ShortestPathsVertex.class);
-        job.setVertexInputFormatClass(SimplePageRankVertexInputFormat.class);
+        job.setVertexInputFormatClass(SimulatedPageRankVertexInputFormat.class);
         job.setMessageCombinerClass(ShortestPathsVertex.SimpleMinCombiner.class);
         job.setVertexOutputFormatClass(SimplePageRankVertexOutputFormat.class);
         FileInputFormat.setInputPaths(job, HDFS_INPUTPATH);
@@ -206,11 +207,12 @@
     private static void generateMaximalCliqueJob(String jobName, String outputPath) throws IOException {
         PregelixJob job = new PregelixJob(jobName);
         job.setVertexClass(MaximalCliqueVertex.class);
+        job.setGlobalAggregatorClass(MaximalCliqueAggregator.class);
+        job.setDynamicVertexValueSize(true);
         job.setVertexInputFormatClass(TextMaximalCliqueInputFormat.class);
         job.setVertexOutputFormatClass(MaximalCliqueVertexOutputFormat.class);
         FileInputFormat.setInputPaths(job, HDFS_INPUTPATH3);
         FileOutputFormat.setOutputPath(job, new Path(HDFS_OUTPUTPAH3));
-        job.setDynamicVertexValueSize(true);
         job.getConfiguration().writeXml(new FileOutputStream(new File(outputPath)));
     }
 
diff --git a/pregelix/pregelix-example/src/test/resources/jobs/MaximalClique.xml b/pregelix/pregelix-example/src/test/resources/jobs/MaximalClique.xml
index ab4b630..616c647 100644
--- a/pregelix/pregelix-example/src/test/resources/jobs/MaximalClique.xml
+++ b/pregelix/pregelix-example/src/test/resources/jobs/MaximalClique.xml
@@ -122,6 +122,7 @@
 <property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>
 <property><name>hadoop.logfile.size</name><value>10000000</value></property>
 <property><name>pregelix.vertexInputFormatClass</name><value>edu.uci.ics.pregelix.example.maximalclique.TextMaximalCliqueInputFormat</value></property>
+<property><name>pregelix.aggregatorClass</name><value>edu.uci.ics.pregelix.example.maximalclique.MaximalCliqueAggregator</value></property>
 <property><name>mapred.job.queue.name</name><value>default</value></property>
 <property><name>mapred.job.tracker.persist.jobstatus.active</name><value>false</value></property>
 <property><name>pregelix.incStateLength</name><value>true</value></property>
diff --git a/pregelix/pregelix-example/src/test/resources/jobs/PageRank.xml b/pregelix/pregelix-example/src/test/resources/jobs/PageRank.xml
index e425b38..744e5b0 100644
--- a/pregelix/pregelix-example/src/test/resources/jobs/PageRank.xml
+++ b/pregelix/pregelix-example/src/test/resources/jobs/PageRank.xml
@@ -123,7 +123,7 @@
 <property><name>mapred.map.tasks.speculative.execution</name><value>true</value></property>
 <property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>
 <property><name>hadoop.logfile.size</name><value>10000000</value></property>
-<property><name>pregelix.vertexInputFormatClass</name><value>edu.uci.ics.pregelix.example.PageRankVertex$SimplePageRankVertexInputFormat</value></property>
+<property><name>pregelix.vertexInputFormatClass</name><value>edu.uci.ics.pregelix.example.PageRankVertex$SimulatedPageRankVertexInputFormat</value></property>
 <property><name>mapred.job.queue.name</name><value>default</value></property>
 <property><name>mapred.job.tracker.persist.jobstatus.active</name><value>false</value></property>
 <property><name>mapred.reduce.slowstart.completed.maps</name><value>0.05</value></property>
diff --git a/pregelix/pregelix-example/src/test/resources/jobs/ShortestPaths.xml b/pregelix/pregelix-example/src/test/resources/jobs/ShortestPaths.xml
index 3719247..9e791e2 100644
--- a/pregelix/pregelix-example/src/test/resources/jobs/ShortestPaths.xml
+++ b/pregelix/pregelix-example/src/test/resources/jobs/ShortestPaths.xml
@@ -124,7 +124,7 @@
 <property><name>mapred.map.tasks.speculative.execution</name><value>true</value></property>
 <property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>
 <property><name>hadoop.logfile.size</name><value>10000000</value></property>
-<property><name>pregelix.vertexInputFormatClass</name><value>edu.uci.ics.pregelix.example.PageRankVertex$SimplePageRankVertexInputFormat</value></property>
+<property><name>pregelix.vertexInputFormatClass</name><value>edu.uci.ics.pregelix.example.PageRankVertex$SimulatedPageRankVertexInputFormat</value></property>
 <property><name>mapred.job.queue.name</name><value>default</value></property>
 <property><name>mapred.job.tracker.persist.jobstatus.active</name><value>false</value></property>
 <property><name>mapred.reduce.slowstart.completed.maps</name><value>0.05</value></property>