support heterogenous cluster
diff --git a/pregelix/pregelix-example/src/test/resources/jobs/PageRankRealComplex.xml b/pregelix/pregelix-example/src/test/resources/jobs/PageRankRealComplex.xml
index 49a6e20..d0f9759 100644
--- a/pregelix/pregelix-example/src/test/resources/jobs/PageRankRealComplex.xml
+++ b/pregelix/pregelix-example/src/test/resources/jobs/PageRankRealComplex.xml
@@ -30,7 +30,6 @@
<property><name>pregelix.combinerClass</name><value>edu.uci.ics.pregelix.example.PageRankVertex$SimpleSumCombiner</value></property>
<property><name>mapred.output.compress</name><value>false</value></property>
<property><name>io.bytes.per.checksum</name><value>512</value></property>
-<property><name>pregelix.aggregatorClass</name><value>class edu.uci.ics.pregelix.api.util.GlobalCountAggregator</value></property>
<property><name>topology.node.switch.mapping.impl</name><value>org.apache.hadoop.net.ScriptBasedMapping</value></property>
<property><name>mapred.reduce.slowstart.completed.maps</name><value>0.05</value></property>
<property><name>mapred.reduce.max.attempts</name><value>4</value></property>
@@ -87,6 +86,7 @@
<property><name>fs.checkpoint.period</name><value>3600</value></property>
<property><name>mapred.job.reuse.jvm.num.tasks</name><value>1</value></property>
<property><name>mapred.jobtracker.completeuserjobs.maximum</name><value>100</value></property>
+<property><name>pregelix.dynamicopt</name><value>true</value></property>
<property><name>fs.s3.maxRetries</name><value>4</value></property>
<property><name>mapred.local.dir</name><value>${hadoop.tmp.dir}/mapred/local</value></property>
<property><name>fs.hftp.impl</name><value>org.apache.hadoop.hdfs.HftpFileSystem</value></property>