diff --git a/.gitignore b/.gitignore
index 4a4cb4b..31c9fc1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,4 +13,4 @@
 derby.log
 hadoop-conf-tmp
 metastore_db
-teststore
\ No newline at end of file
+teststore
diff --git a/algebricks/algebricks-common/pom.xml b/algebricks/algebricks-common/pom.xml
index 8311b8a..0e840fa 100644
--- a/algebricks/algebricks-common/pom.xml
+++ b/algebricks/algebricks-common/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,7 +27,7 @@
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-api</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   </dependencies>
 </project>
diff --git a/algebricks/algebricks-compiler/pom.xml b/algebricks/algebricks-compiler/pom.xml
index 74a8ef7..2f78812 100644
--- a/algebricks/algebricks-compiler/pom.xml
+++ b/algebricks/algebricks-compiler/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,12 +27,12 @@
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>algebricks-rewriter</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>algebricks-core</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   </dependencies>
 </project>
diff --git a/algebricks/algebricks-core/pom.xml b/algebricks/algebricks-core/pom.xml
index dc2ddd0..11b03ee 100644
--- a/algebricks/algebricks-core/pom.xml
+++ b/algebricks/algebricks-core/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,27 +27,27 @@
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-storage-am-btree</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-storage-am-rtree</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-dataflow-std</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>algebricks-runtime</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>algebricks-common</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   </dependencies>
 </project>
diff --git a/algebricks/algebricks-data/pom.xml b/algebricks/algebricks-data/pom.xml
index 1b6646f..1ca1557 100644
--- a/algebricks/algebricks-data/pom.xml
+++ b/algebricks/algebricks-data/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,12 +27,12 @@
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>algebricks-common</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-data-std</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   </dependencies>
 </project>
diff --git a/algebricks/algebricks-examples/piglet-example/pom.xml b/algebricks/algebricks-examples/piglet-example/pom.xml
index 7294979..4b101d7 100644
--- a/algebricks/algebricks-examples/piglet-example/pom.xml
+++ b/algebricks/algebricks-examples/piglet-example/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>algebricks-examples</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<build>
@@ -89,7 +89,7 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>algebricks-compiler</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>junit</groupId>
diff --git a/algebricks/algebricks-examples/pom.xml b/algebricks/algebricks-examples/pom.xml
index b19150c..a02379d 100644
--- a/algebricks/algebricks-examples/pom.xml
+++ b/algebricks/algebricks-examples/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/algebricks/algebricks-rewriter/pom.xml b/algebricks/algebricks-rewriter/pom.xml
index 172d7b8..9fd5aac 100644
--- a/algebricks/algebricks-rewriter/pom.xml
+++ b/algebricks/algebricks-rewriter/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,7 +27,7 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>algebricks-core</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   	</dependency>
   </dependencies>
 </project>
diff --git a/algebricks/algebricks-runtime/pom.xml b/algebricks/algebricks-runtime/pom.xml
index bdb8c0f..a2ad833 100644
--- a/algebricks/algebricks-runtime/pom.xml
+++ b/algebricks/algebricks-runtime/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,27 +27,27 @@
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-storage-am-btree</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-storage-am-rtree</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-dataflow-std</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>algebricks-common</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>algebricks-data</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   </dependencies>
 </project>
diff --git a/algebricks/algebricks-tests/pom.xml b/algebricks/algebricks-tests/pom.xml
index 02b7c45..031dfbe 100644
--- a/algebricks/algebricks-tests/pom.xml
+++ b/algebricks/algebricks-tests/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -85,7 +85,7 @@
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>algebricks-compiler</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>junit</groupId>
@@ -96,17 +96,17 @@
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-control-cc</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-control-nc</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-data-std</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   </dependencies>
 </project>
diff --git a/algebricks/pom.xml b/algebricks/pom.xml
index d7c871a..e1abc89 100644
--- a/algebricks/pom.xml
+++ b/algebricks/pom.xml
@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>edu.uci.ics.hyracks</groupId>
   <artifactId>algebricks</artifactId>
-  <version>0.2.5-SNAPSHOT</version>
+  <version>0.2.6-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>algebricks</name>
 
diff --git a/genomix/genomix-data/pom.xml b/genomix/genomix-data/pom.xml
index 4faf4a3..2dd44bb 100644
--- a/genomix/genomix-data/pom.xml
+++ b/genomix/genomix-data/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>genomix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<properties>
diff --git a/genomix/genomix-hadoop/actual1/conf.xml b/genomix/genomix-hadoop/actual1/conf.xml
deleted file mode 100644
index 506913d..0000000
--- a/genomix/genomix-hadoop/actual1/conf.xml
+++ /dev/null
@@ -1,179 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?><configuration>
-<property><name>fs.s3n.impl</name><value>org.apache.hadoop.fs.s3native.NativeS3FileSystem</value></property>
-<property><name>mapred.task.cache.levels</name><value>2</value></property>
-<property><name>hadoop.tmp.dir</name><value>/tmp/hadoop-${user.name}</value></property>
-<property><name>hadoop.native.lib</name><value>true</value></property>
-<property><name>map.sort.class</name><value>org.apache.hadoop.util.QuickSort</value></property>
-<property><name>dfs.namenode.decommission.nodes.per.interval</name><value>5</value></property>
-<property><name>dfs.https.need.client.auth</name><value>false</value></property>
-<property><name>ipc.client.idlethreshold</name><value>4000</value></property>
-<property><name>mapred.system.dir</name><value>${hadoop.tmp.dir}/mapred/system</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.hours</name><value>0</value></property>
-<property><name>dfs.namenode.logging.level</name><value>info</value></property>
-<property><name>dfs.datanode.address</name><value>127.0.0.1:0</value></property>
-<property><name>io.skip.checksum.errors</name><value>false</value></property>
-<property><name>fs.default.name</name><value>hdfs://localhost:61115</value></property>
-<property><name>mapred.child.tmp</name><value>./tmp</value></property>
-<property><name>fs.har.impl.disable.cache</name><value>true</value></property>
-<property><name>dfs.safemode.threshold.pct</name><value>0.999f</value></property>
-<property><name>mapred.skip.reduce.max.skip.groups</name><value>0</value></property>
-<property><name>dfs.namenode.handler.count</name><value>10</value></property>
-<property><name>dfs.blockreport.initialDelay</name><value>0</value></property>
-<property><name>mapred.jobtracker.instrumentation</name><value>org.apache.hadoop.mapred.JobTrackerMetricsInst</value></property>
-<property><name>mapred.tasktracker.dns.nameserver</name><value>default</value></property>
-<property><name>io.sort.factor</name><value>10</value></property>
-<property><name>mapred.task.timeout</name><value>600000</value></property>
-<property><name>mapred.max.tracker.failures</name><value>4</value></property>
-<property><name>hadoop.rpc.socket.factory.class.default</name><value>org.apache.hadoop.net.StandardSocketFactory</value></property>
-<property><name>fs.hdfs.impl</name><value>org.apache.hadoop.hdfs.DistributedFileSystem</value></property>
-<property><name>mapred.queue.default.acl-administer-jobs</name><value>*</value></property>
-<property><name>mapred.queue.default.acl-submit-job</name><value>*</value></property>
-<property><name>mapred.skip.map.auto.incr.proc.count</name><value>true</value></property>
-<property><name>io.mapfile.bloom.size</name><value>1048576</value></property>
-<property><name>dfs.safemode.extension</name><value>0</value></property>
-<property><name>tasktracker.http.threads</name><value>40</value></property>
-<property><name>mapred.job.shuffle.merge.percent</name><value>0.66</value></property>
-<property><name>fs.ftp.impl</name><value>org.apache.hadoop.fs.ftp.FTPFileSystem</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>topology.node.switch.mapping.impl</name><value>org.apache.hadoop.net.StaticMapping</value></property>
-<property><name>dfs.https.server.keystore.resource</name><value>ssl-server.xml</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>
-<property><name>fs.ramfs.impl</name><value>org.apache.hadoop.fs.InMemoryFileSystem</value></property>
-<property><name>dfs.name.edits.dir</name><value>${dfs.name.dir}</value></property>
-<property><name>mapred.skip.map.max.skip.records</name><value>0</value></property>
-<property><name>hadoop.job.ugi</name><value>hadoop,staff,everyone,localaccounts</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.dir</name><value>/jobtracker/jobsInfo</value></property>
-<property><name>dfs.block.size</name><value>67108864</value></property>
-<property><name>fs.s3.buffer.dir</name><value>${hadoop.tmp.dir}/s3</value></property>
-<property><name>job.end.retry.attempts</name><value>0</value></property>
-<property><name>fs.file.impl</name><value>org.apache.hadoop.fs.LocalFileSystem</value></property>
-<property><name>mapred.local.dir.minspacestart</name><value>0</value></property>
-<property><name>mapred.output.compression.type</name><value>RECORD</value></property>
-<property><name>dfs.datanode.ipc.address</name><value>127.0.0.1:0</value></property>
-<property><name>dfs.permissions</name><value>true</value></property>
-<property><name>topology.script.number.args</name><value>100</value></property>
-<property><name>io.mapfile.bloom.error.rate</name><value>0.005</value></property>
-<property><name>mapred.max.tracker.blacklists</name><value>4</value></property>
-<property><name>mapred.task.profile.maps</name><value>0-2</value></property>
-<property><name>dfs.datanode.https.address</name><value>0.0.0.0:50475</value></property>
-<property><name>mapred.userlog.retain.hours</name><value>24</value></property>
-<property><name>dfs.secondary.http.address</name><value>0.0.0.0:50090</value></property>
-<property><name>dfs.replication.max</name><value>512</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.active</name><value>false</value></property>
-<property><name>hadoop.security.authorization</name><value>false</value></property>
-<property><name>local.cache.size</name><value>10737418240</value></property>
-<property><name>mapred.min.split.size</name><value>0</value></property>
-<property><name>mapred.map.tasks</name><value>2</value></property>
-<property><name>mapred.child.java.opts</name><value>-Xmx200m</value></property>
-<property><name>dfs.https.client.keystore.resource</name><value>ssl-client.xml</value></property>
-<property><name>dfs.namenode.startup</name><value>REGULAR</value></property>
-<property><name>mapred.job.queue.name</name><value>default</value></property>
-<property><name>dfs.https.address</name><value>0.0.0.0:50470</value></property>
-<property><name>dfs.balance.bandwidthPerSec</name><value>1048576</value></property>
-<property><name>ipc.server.listen.queue.size</name><value>128</value></property>
-<property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>
-<property><name>job.end.retry.interval</name><value>30000</value></property>
-<property><name>mapred.skip.attempts.to.start.skipping</name><value>2</value></property>
-<property><name>fs.checkpoint.dir</name><value>build/test/data/dfs/namesecondary1,build/test/data/dfs/namesecondary2</value></property>
-<property><name>mapred.reduce.tasks</name><value>1</value></property>
-<property><name>mapred.merge.recordsBeforeProgress</name><value>10000</value></property>
-<property><name>mapred.userlog.limit.kb</name><value>0</value></property>
-<property><name>dfs.max.objects</name><value>0</value></property>
-<property><name>webinterface.private.actions</name><value>false</value></property>
-<property><name>io.sort.spill.percent</name><value>0.80</value></property>
-<property><name>mapred.job.shuffle.input.buffer.percent</name><value>0.70</value></property>
-<property><name>dfs.datanode.dns.nameserver</name><value>default</value></property>
-<property><name>mapred.map.tasks.speculative.execution</name><value>true</value></property>
-<property><name>hadoop.util.hash.type</name><value>murmur</value></property>
-<property><name>dfs.blockreport.intervalMsec</name><value>3600000</value></property>
-<property><name>mapred.map.max.attempts</name><value>4</value></property>
-<property><name>dfs.client.block.write.retries</name><value>3</value></property>
-<property><name>mapred.job.tracker.handler.count</name><value>10</value></property>
-<property><name>mapred.tasktracker.expiry.interval</name><value>600000</value></property>
-<property><name>dfs.https.enable</name><value>false</value></property>
-<property><name>mapred.jobtracker.maxtasks.per.job</name><value>-1</value></property>
-<property><name>mapred.jobtracker.job.history.block.size</name><value>3145728</value></property>
-<property><name>keep.failed.task.files</name><value>false</value></property>
-<property><name>ipc.client.tcpnodelay</name><value>false</value></property>
-<property><name>mapred.task.profile.reduces</name><value>0-2</value></property>
-<property><name>mapred.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
-<property><name>io.map.index.skip</name><value>0</value></property>
-<property><name>ipc.server.tcpnodelay</name><value>false</value></property>
-<property><name>dfs.default.chunk.view.size</name><value>32768</value></property>
-<property><name>hadoop.logfile.size</name><value>10000000</value></property>
-<property><name>mapred.reduce.tasks.speculative.execution</name><value>true</value></property>
-<property><name>dfs.datanode.du.reserved</name><value>0</value></property>
-<property><name>fs.checkpoint.period</name><value>3600</value></property>
-<property><name>dfs.web.ugi</name><value>webuser,webgroup</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>dfs.df.interval</name><value>60000</value></property>
-<property><name>dfs.data.dir</name><value>${hadoop.tmp.dir}/dfs/data</value></property>
-<property><name>fs.s3.maxRetries</name><value>4</value></property>
-<property><name>dfs.datanode.dns.interface</name><value>default</value></property>
-<property><name>dfs.support.append</name><value>false</value></property>
-<property><name>dfs.permissions.supergroup</name><value>supergroup</value></property>
-<property><name>mapred.local.dir</name><value>${hadoop.tmp.dir}/mapred/local</value></property>
-<property><name>fs.hftp.impl</name><value>org.apache.hadoop.hdfs.HftpFileSystem</value></property>
-<property><name>fs.trash.interval</name><value>0</value></property>
-<property><name>fs.s3.sleepTimeSeconds</name><value>10</value></property>
-<property><name>dfs.replication.min</name><value>1</value></property>
-<property><name>mapred.submit.replication</name><value>10</value></property>
-<property><name>fs.har.impl</name><value>org.apache.hadoop.fs.HarFileSystem</value></property>
-<property><name>mapred.map.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
-<property><name>mapred.tasktracker.dns.interface</name><value>default</value></property>
-<property><name>dfs.namenode.decommission.interval</name><value>3</value></property>
-<property><name>dfs.http.address</name><value>localhost:61116</value></property>
-<property><name>dfs.heartbeat.interval</name><value>3</value></property>
-<property><name>mapred.job.tracker</name><value>local</value></property>
-<property><name>io.seqfile.sorter.recordlimit</name><value>1000000</value></property>
-<property><name>dfs.name.dir</name><value>build/test/data/dfs/name1,build/test/data/dfs/name2</value></property>
-<property><name>mapred.line.input.format.linespermap</name><value>1</value></property>
-<property><name>mapred.jobtracker.taskScheduler</name><value>org.apache.hadoop.mapred.JobQueueTaskScheduler</value></property>
-<property><name>mapred.tasktracker.instrumentation</name><value>org.apache.hadoop.mapred.TaskTrackerMetricsInst</value></property>
-<property><name>dfs.datanode.http.address</name><value>127.0.0.1:0</value></property>
-<property><name>mapred.tasktracker.procfsbasedprocesstree.sleeptime-before-sigkill</name><value>5000</value></property>
-<property><name>mapred.local.dir.minspacekill</name><value>0</value></property>
-<property><name>dfs.replication.interval</name><value>3</value></property>
-<property><name>io.sort.record.percent</name><value>0.05</value></property>
-<property><name>fs.kfs.impl</name><value>org.apache.hadoop.fs.kfs.KosmosFileSystem</value></property>
-<property><name>mapred.temp.dir</name><value>${hadoop.tmp.dir}/mapred/temp</value></property>
-<property><name>mapred.tasktracker.reduce.tasks.maximum</name><value>2</value></property>
-<property><name>dfs.replication</name><value>2</value></property>
-<property><name>fs.checkpoint.edits.dir</name><value>${fs.checkpoint.dir}</value></property>
-<property><name>mapred.job.reduce.input.buffer.percent</name><value>0.0</value></property>
-<property><name>mapred.tasktracker.indexcache.mb</name><value>10</value></property>
-<property><name>hadoop.logfile.count</name><value>10</value></property>
-<property><name>mapred.skip.reduce.auto.incr.proc.count</name><value>true</value></property>
-<property><name>io.seqfile.compress.blocksize</name><value>1000000</value></property>
-<property><name>fs.s3.block.size</name><value>67108864</value></property>
-<property><name>mapred.tasktracker.taskmemorymanager.monitoring-interval</name><value>5000</value></property>
-<property><name>mapred.acls.enabled</name><value>false</value></property>
-<property><name>mapred.queue.names</name><value>default</value></property>
-<property><name>dfs.access.time.precision</name><value>3600000</value></property>
-<property><name>fs.hsftp.impl</name><value>org.apache.hadoop.hdfs.HsftpFileSystem</value></property>
-<property><name>mapred.task.tracker.http.address</name><value>0.0.0.0:50060</value></property>
-<property><name>mapred.reduce.parallel.copies</name><value>5</value></property>
-<property><name>io.seqfile.lazydecompress</name><value>true</value></property>
-<property><name>io.sort.mb</name><value>100</value></property>
-<property><name>ipc.client.connection.maxidletime</name><value>10000</value></property>
-<property><name>mapred.compress.map.output</name><value>false</value></property>
-<property><name>mapred.task.tracker.report.address</name><value>127.0.0.1:0</value></property>
-<property><name>ipc.client.kill.max</name><value>10</value></property>
-<property><name>ipc.client.connect.max.retries</name><value>10</value></property>
-<property><name>fs.s3.impl</name><value>org.apache.hadoop.fs.s3.S3FileSystem</value></property>
-<property><name>mapred.job.tracker.http.address</name><value>0.0.0.0:50030</value></property>
-<property><name>io.file.buffer.size</name><value>4096</value></property>
-<property><name>mapred.jobtracker.restart.recover</name><value>false</value></property>
-<property><name>io.serializations</name><value>org.apache.hadoop.io.serializer.WritableSerialization</value></property>
-<property><name>dfs.datanode.handler.count</name><value>3</value></property>
-<property><name>mapred.reduce.copy.backoff</name><value>300</value></property>
-<property><name>mapred.task.profile</name><value>false</value></property>
-<property><name>dfs.replication.considerLoad</name><value>true</value></property>
-<property><name>jobclient.output.filter</name><value>FAILED</value></property>
-<property><name>mapred.tasktracker.map.tasks.maximum</name><value>2</value></property>
-<property><name>io.compression.codecs</name><value>org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec</value></property>
-<property><name>fs.checkpoint.size</name><value>67108864</value></property>
-</configuration>
\ No newline at end of file
diff --git a/genomix/genomix-hadoop/actual1/result1/.part-00000.crc b/genomix/genomix-hadoop/actual1/result1/.part-00000.crc
deleted file mode 100644
index 3422e04..0000000
--- a/genomix/genomix-hadoop/actual1/result1/.part-00000.crc
+++ /dev/null
Binary files differ
diff --git a/genomix/genomix-hadoop/actual1/result1/part-00000 b/genomix/genomix-hadoop/actual1/result1/part-00000
deleted file mode 100755
index c21f5f6..0000000
--- a/genomix/genomix-hadoop/actual1/result1/part-00000
+++ /dev/null
Binary files differ
diff --git a/genomix/genomix-hadoop/actual2/conf.xml b/genomix/genomix-hadoop/actual2/conf.xml
deleted file mode 100644
index ff11b9e..0000000
--- a/genomix/genomix-hadoop/actual2/conf.xml
+++ /dev/null
@@ -1,179 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?><configuration>
-<property><name>fs.s3n.impl</name><value>org.apache.hadoop.fs.s3native.NativeS3FileSystem</value></property>
-<property><name>mapred.task.cache.levels</name><value>2</value></property>
-<property><name>hadoop.tmp.dir</name><value>/tmp/hadoop-${user.name}</value></property>
-<property><name>hadoop.native.lib</name><value>true</value></property>
-<property><name>map.sort.class</name><value>org.apache.hadoop.util.QuickSort</value></property>
-<property><name>dfs.namenode.decommission.nodes.per.interval</name><value>5</value></property>
-<property><name>dfs.https.need.client.auth</name><value>false</value></property>
-<property><name>ipc.client.idlethreshold</name><value>4000</value></property>
-<property><name>mapred.system.dir</name><value>${hadoop.tmp.dir}/mapred/system</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.hours</name><value>0</value></property>
-<property><name>dfs.namenode.logging.level</name><value>info</value></property>
-<property><name>dfs.datanode.address</name><value>127.0.0.1:0</value></property>
-<property><name>io.skip.checksum.errors</name><value>false</value></property>
-<property><name>fs.default.name</name><value>hdfs://localhost:61195</value></property>
-<property><name>mapred.child.tmp</name><value>./tmp</value></property>
-<property><name>fs.har.impl.disable.cache</name><value>true</value></property>
-<property><name>dfs.safemode.threshold.pct</name><value>0.999f</value></property>
-<property><name>mapred.skip.reduce.max.skip.groups</name><value>0</value></property>
-<property><name>dfs.namenode.handler.count</name><value>10</value></property>
-<property><name>dfs.blockreport.initialDelay</name><value>0</value></property>
-<property><name>mapred.jobtracker.instrumentation</name><value>org.apache.hadoop.mapred.JobTrackerMetricsInst</value></property>
-<property><name>mapred.tasktracker.dns.nameserver</name><value>default</value></property>
-<property><name>io.sort.factor</name><value>10</value></property>
-<property><name>mapred.task.timeout</name><value>600000</value></property>
-<property><name>mapred.max.tracker.failures</name><value>4</value></property>
-<property><name>hadoop.rpc.socket.factory.class.default</name><value>org.apache.hadoop.net.StandardSocketFactory</value></property>
-<property><name>fs.hdfs.impl</name><value>org.apache.hadoop.hdfs.DistributedFileSystem</value></property>
-<property><name>mapred.queue.default.acl-administer-jobs</name><value>*</value></property>
-<property><name>mapred.queue.default.acl-submit-job</name><value>*</value></property>
-<property><name>mapred.skip.map.auto.incr.proc.count</name><value>true</value></property>
-<property><name>io.mapfile.bloom.size</name><value>1048576</value></property>
-<property><name>dfs.safemode.extension</name><value>0</value></property>
-<property><name>tasktracker.http.threads</name><value>40</value></property>
-<property><name>mapred.job.shuffle.merge.percent</name><value>0.66</value></property>
-<property><name>fs.ftp.impl</name><value>org.apache.hadoop.fs.ftp.FTPFileSystem</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>topology.node.switch.mapping.impl</name><value>org.apache.hadoop.net.StaticMapping</value></property>
-<property><name>dfs.https.server.keystore.resource</name><value>ssl-server.xml</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>
-<property><name>fs.ramfs.impl</name><value>org.apache.hadoop.fs.InMemoryFileSystem</value></property>
-<property><name>dfs.name.edits.dir</name><value>${dfs.name.dir}</value></property>
-<property><name>mapred.skip.map.max.skip.records</name><value>0</value></property>
-<property><name>hadoop.job.ugi</name><value>hadoop,staff,everyone,localaccounts</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.dir</name><value>/jobtracker/jobsInfo</value></property>
-<property><name>dfs.block.size</name><value>67108864</value></property>
-<property><name>fs.s3.buffer.dir</name><value>${hadoop.tmp.dir}/s3</value></property>
-<property><name>job.end.retry.attempts</name><value>0</value></property>
-<property><name>fs.file.impl</name><value>org.apache.hadoop.fs.LocalFileSystem</value></property>
-<property><name>mapred.local.dir.minspacestart</name><value>0</value></property>
-<property><name>mapred.output.compression.type</name><value>RECORD</value></property>
-<property><name>dfs.datanode.ipc.address</name><value>127.0.0.1:0</value></property>
-<property><name>dfs.permissions</name><value>true</value></property>
-<property><name>topology.script.number.args</name><value>100</value></property>
-<property><name>io.mapfile.bloom.error.rate</name><value>0.005</value></property>
-<property><name>mapred.max.tracker.blacklists</name><value>4</value></property>
-<property><name>mapred.task.profile.maps</name><value>0-2</value></property>
-<property><name>dfs.datanode.https.address</name><value>0.0.0.0:50475</value></property>
-<property><name>mapred.userlog.retain.hours</name><value>24</value></property>
-<property><name>dfs.secondary.http.address</name><value>0.0.0.0:50090</value></property>
-<property><name>dfs.replication.max</name><value>512</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.active</name><value>false</value></property>
-<property><name>hadoop.security.authorization</name><value>false</value></property>
-<property><name>local.cache.size</name><value>10737418240</value></property>
-<property><name>mapred.min.split.size</name><value>0</value></property>
-<property><name>mapred.map.tasks</name><value>2</value></property>
-<property><name>mapred.child.java.opts</name><value>-Xmx200m</value></property>
-<property><name>dfs.https.client.keystore.resource</name><value>ssl-client.xml</value></property>
-<property><name>dfs.namenode.startup</name><value>REGULAR</value></property>
-<property><name>mapred.job.queue.name</name><value>default</value></property>
-<property><name>dfs.https.address</name><value>0.0.0.0:50470</value></property>
-<property><name>dfs.balance.bandwidthPerSec</name><value>1048576</value></property>
-<property><name>ipc.server.listen.queue.size</name><value>128</value></property>
-<property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>
-<property><name>job.end.retry.interval</name><value>30000</value></property>
-<property><name>mapred.skip.attempts.to.start.skipping</name><value>2</value></property>
-<property><name>fs.checkpoint.dir</name><value>build/test/data/dfs/namesecondary1,build/test/data/dfs/namesecondary2</value></property>
-<property><name>mapred.reduce.tasks</name><value>1</value></property>
-<property><name>mapred.merge.recordsBeforeProgress</name><value>10000</value></property>
-<property><name>mapred.userlog.limit.kb</name><value>0</value></property>
-<property><name>dfs.max.objects</name><value>0</value></property>
-<property><name>webinterface.private.actions</name><value>false</value></property>
-<property><name>io.sort.spill.percent</name><value>0.80</value></property>
-<property><name>mapred.job.shuffle.input.buffer.percent</name><value>0.70</value></property>
-<property><name>dfs.datanode.dns.nameserver</name><value>default</value></property>
-<property><name>mapred.map.tasks.speculative.execution</name><value>true</value></property>
-<property><name>hadoop.util.hash.type</name><value>murmur</value></property>
-<property><name>dfs.blockreport.intervalMsec</name><value>3600000</value></property>
-<property><name>mapred.map.max.attempts</name><value>4</value></property>
-<property><name>dfs.client.block.write.retries</name><value>3</value></property>
-<property><name>mapred.job.tracker.handler.count</name><value>10</value></property>
-<property><name>mapred.tasktracker.expiry.interval</name><value>600000</value></property>
-<property><name>dfs.https.enable</name><value>false</value></property>
-<property><name>mapred.jobtracker.maxtasks.per.job</name><value>-1</value></property>
-<property><name>mapred.jobtracker.job.history.block.size</name><value>3145728</value></property>
-<property><name>keep.failed.task.files</name><value>false</value></property>
-<property><name>ipc.client.tcpnodelay</name><value>false</value></property>
-<property><name>mapred.task.profile.reduces</name><value>0-2</value></property>
-<property><name>mapred.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
-<property><name>io.map.index.skip</name><value>0</value></property>
-<property><name>ipc.server.tcpnodelay</name><value>false</value></property>
-<property><name>dfs.default.chunk.view.size</name><value>32768</value></property>
-<property><name>hadoop.logfile.size</name><value>10000000</value></property>
-<property><name>mapred.reduce.tasks.speculative.execution</name><value>true</value></property>
-<property><name>dfs.datanode.du.reserved</name><value>0</value></property>
-<property><name>fs.checkpoint.period</name><value>3600</value></property>
-<property><name>dfs.web.ugi</name><value>webuser,webgroup</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>dfs.df.interval</name><value>60000</value></property>
-<property><name>dfs.data.dir</name><value>${hadoop.tmp.dir}/dfs/data</value></property>
-<property><name>fs.s3.maxRetries</name><value>4</value></property>
-<property><name>dfs.datanode.dns.interface</name><value>default</value></property>
-<property><name>dfs.support.append</name><value>false</value></property>
-<property><name>dfs.permissions.supergroup</name><value>supergroup</value></property>
-<property><name>mapred.local.dir</name><value>${hadoop.tmp.dir}/mapred/local</value></property>
-<property><name>fs.hftp.impl</name><value>org.apache.hadoop.hdfs.HftpFileSystem</value></property>
-<property><name>fs.trash.interval</name><value>0</value></property>
-<property><name>fs.s3.sleepTimeSeconds</name><value>10</value></property>
-<property><name>dfs.replication.min</name><value>1</value></property>
-<property><name>mapred.submit.replication</name><value>10</value></property>
-<property><name>fs.har.impl</name><value>org.apache.hadoop.fs.HarFileSystem</value></property>
-<property><name>mapred.map.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
-<property><name>mapred.tasktracker.dns.interface</name><value>default</value></property>
-<property><name>dfs.namenode.decommission.interval</name><value>3</value></property>
-<property><name>dfs.http.address</name><value>localhost:61196</value></property>
-<property><name>dfs.heartbeat.interval</name><value>3</value></property>
-<property><name>mapred.job.tracker</name><value>local</value></property>
-<property><name>io.seqfile.sorter.recordlimit</name><value>1000000</value></property>
-<property><name>dfs.name.dir</name><value>build/test/data/dfs/name1,build/test/data/dfs/name2</value></property>
-<property><name>mapred.line.input.format.linespermap</name><value>1</value></property>
-<property><name>mapred.jobtracker.taskScheduler</name><value>org.apache.hadoop.mapred.JobQueueTaskScheduler</value></property>
-<property><name>mapred.tasktracker.instrumentation</name><value>org.apache.hadoop.mapred.TaskTrackerMetricsInst</value></property>
-<property><name>dfs.datanode.http.address</name><value>127.0.0.1:0</value></property>
-<property><name>mapred.tasktracker.procfsbasedprocesstree.sleeptime-before-sigkill</name><value>5000</value></property>
-<property><name>mapred.local.dir.minspacekill</name><value>0</value></property>
-<property><name>dfs.replication.interval</name><value>3</value></property>
-<property><name>io.sort.record.percent</name><value>0.05</value></property>
-<property><name>fs.kfs.impl</name><value>org.apache.hadoop.fs.kfs.KosmosFileSystem</value></property>
-<property><name>mapred.temp.dir</name><value>${hadoop.tmp.dir}/mapred/temp</value></property>
-<property><name>mapred.tasktracker.reduce.tasks.maximum</name><value>2</value></property>
-<property><name>dfs.replication</name><value>2</value></property>
-<property><name>fs.checkpoint.edits.dir</name><value>${fs.checkpoint.dir}</value></property>
-<property><name>mapred.job.reduce.input.buffer.percent</name><value>0.0</value></property>
-<property><name>mapred.tasktracker.indexcache.mb</name><value>10</value></property>
-<property><name>hadoop.logfile.count</name><value>10</value></property>
-<property><name>mapred.skip.reduce.auto.incr.proc.count</name><value>true</value></property>
-<property><name>io.seqfile.compress.blocksize</name><value>1000000</value></property>
-<property><name>fs.s3.block.size</name><value>67108864</value></property>
-<property><name>mapred.tasktracker.taskmemorymanager.monitoring-interval</name><value>5000</value></property>
-<property><name>mapred.acls.enabled</name><value>false</value></property>
-<property><name>mapred.queue.names</name><value>default</value></property>
-<property><name>dfs.access.time.precision</name><value>3600000</value></property>
-<property><name>fs.hsftp.impl</name><value>org.apache.hadoop.hdfs.HsftpFileSystem</value></property>
-<property><name>mapred.task.tracker.http.address</name><value>0.0.0.0:50060</value></property>
-<property><name>mapred.reduce.parallel.copies</name><value>5</value></property>
-<property><name>io.seqfile.lazydecompress</name><value>true</value></property>
-<property><name>io.sort.mb</name><value>100</value></property>
-<property><name>ipc.client.connection.maxidletime</name><value>10000</value></property>
-<property><name>mapred.compress.map.output</name><value>false</value></property>
-<property><name>mapred.task.tracker.report.address</name><value>127.0.0.1:0</value></property>
-<property><name>ipc.client.kill.max</name><value>10</value></property>
-<property><name>ipc.client.connect.max.retries</name><value>10</value></property>
-<property><name>fs.s3.impl</name><value>org.apache.hadoop.fs.s3.S3FileSystem</value></property>
-<property><name>mapred.job.tracker.http.address</name><value>0.0.0.0:50030</value></property>
-<property><name>io.file.buffer.size</name><value>4096</value></property>
-<property><name>mapred.jobtracker.restart.recover</name><value>false</value></property>
-<property><name>io.serializations</name><value>org.apache.hadoop.io.serializer.WritableSerialization</value></property>
-<property><name>dfs.datanode.handler.count</name><value>3</value></property>
-<property><name>mapred.reduce.copy.backoff</name><value>300</value></property>
-<property><name>mapred.task.profile</name><value>false</value></property>
-<property><name>dfs.replication.considerLoad</name><value>true</value></property>
-<property><name>jobclient.output.filter</name><value>FAILED</value></property>
-<property><name>mapred.tasktracker.map.tasks.maximum</name><value>2</value></property>
-<property><name>io.compression.codecs</name><value>org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec</value></property>
-<property><name>fs.checkpoint.size</name><value>67108864</value></property>
-</configuration>
\ No newline at end of file
diff --git a/genomix/genomix-hadoop/actual2/result2/.part-00000.crc b/genomix/genomix-hadoop/actual2/result2/.part-00000.crc
deleted file mode 100644
index 3f8c2c5..0000000
--- a/genomix/genomix-hadoop/actual2/result2/.part-00000.crc
+++ /dev/null
Binary files differ
diff --git a/genomix/genomix-hadoop/actual2/result2/part-00000 b/genomix/genomix-hadoop/actual2/result2/part-00000
deleted file mode 100755
index ea3e875..0000000
--- a/genomix/genomix-hadoop/actual2/result2/part-00000
+++ /dev/null
Binary files differ
diff --git a/genomix/genomix-hadoop/actual3/complete2/.complete2-r-00000.crc b/genomix/genomix-hadoop/actual3/complete2/.complete2-r-00000.crc
deleted file mode 100644
index b0b2753..0000000
--- a/genomix/genomix-hadoop/actual3/complete2/.complete2-r-00000.crc
+++ /dev/null
Binary files differ
diff --git a/genomix/genomix-hadoop/actual3/complete2/complete2-r-00000 b/genomix/genomix-hadoop/actual3/complete2/complete2-r-00000
deleted file mode 100755
index d3d3667..0000000
--- a/genomix/genomix-hadoop/actual3/complete2/complete2-r-00000
+++ /dev/null
Binary files differ
diff --git a/genomix/genomix-hadoop/actual3/conf.xml b/genomix/genomix-hadoop/actual3/conf.xml
deleted file mode 100644
index 16a0edc..0000000
--- a/genomix/genomix-hadoop/actual3/conf.xml
+++ /dev/null
@@ -1,179 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?><configuration>
-<property><name>fs.s3n.impl</name><value>org.apache.hadoop.fs.s3native.NativeS3FileSystem</value></property>
-<property><name>mapred.task.cache.levels</name><value>2</value></property>
-<property><name>hadoop.tmp.dir</name><value>/tmp/hadoop-${user.name}</value></property>
-<property><name>hadoop.native.lib</name><value>true</value></property>
-<property><name>map.sort.class</name><value>org.apache.hadoop.util.QuickSort</value></property>
-<property><name>dfs.namenode.decommission.nodes.per.interval</name><value>5</value></property>
-<property><name>dfs.https.need.client.auth</name><value>false</value></property>
-<property><name>ipc.client.idlethreshold</name><value>4000</value></property>
-<property><name>mapred.system.dir</name><value>${hadoop.tmp.dir}/mapred/system</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.hours</name><value>0</value></property>
-<property><name>dfs.namenode.logging.level</name><value>info</value></property>
-<property><name>dfs.datanode.address</name><value>127.0.0.1:0</value></property>
-<property><name>io.skip.checksum.errors</name><value>false</value></property>
-<property><name>fs.default.name</name><value>hdfs://localhost:62106</value></property>
-<property><name>mapred.child.tmp</name><value>./tmp</value></property>
-<property><name>fs.har.impl.disable.cache</name><value>true</value></property>
-<property><name>dfs.safemode.threshold.pct</name><value>0.999f</value></property>
-<property><name>mapred.skip.reduce.max.skip.groups</name><value>0</value></property>
-<property><name>dfs.namenode.handler.count</name><value>10</value></property>
-<property><name>dfs.blockreport.initialDelay</name><value>0</value></property>
-<property><name>mapred.jobtracker.instrumentation</name><value>org.apache.hadoop.mapred.JobTrackerMetricsInst</value></property>
-<property><name>mapred.tasktracker.dns.nameserver</name><value>default</value></property>
-<property><name>io.sort.factor</name><value>10</value></property>
-<property><name>mapred.task.timeout</name><value>600000</value></property>
-<property><name>mapred.max.tracker.failures</name><value>4</value></property>
-<property><name>hadoop.rpc.socket.factory.class.default</name><value>org.apache.hadoop.net.StandardSocketFactory</value></property>
-<property><name>fs.hdfs.impl</name><value>org.apache.hadoop.hdfs.DistributedFileSystem</value></property>
-<property><name>mapred.queue.default.acl-administer-jobs</name><value>*</value></property>
-<property><name>mapred.queue.default.acl-submit-job</name><value>*</value></property>
-<property><name>mapred.skip.map.auto.incr.proc.count</name><value>true</value></property>
-<property><name>io.mapfile.bloom.size</name><value>1048576</value></property>
-<property><name>dfs.safemode.extension</name><value>0</value></property>
-<property><name>tasktracker.http.threads</name><value>40</value></property>
-<property><name>mapred.job.shuffle.merge.percent</name><value>0.66</value></property>
-<property><name>fs.ftp.impl</name><value>org.apache.hadoop.fs.ftp.FTPFileSystem</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>topology.node.switch.mapping.impl</name><value>org.apache.hadoop.net.StaticMapping</value></property>
-<property><name>dfs.https.server.keystore.resource</name><value>ssl-server.xml</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>
-<property><name>fs.ramfs.impl</name><value>org.apache.hadoop.fs.InMemoryFileSystem</value></property>
-<property><name>dfs.name.edits.dir</name><value>${dfs.name.dir}</value></property>
-<property><name>mapred.skip.map.max.skip.records</name><value>0</value></property>
-<property><name>hadoop.job.ugi</name><value>hadoop,staff,everyone,localaccounts</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.dir</name><value>/jobtracker/jobsInfo</value></property>
-<property><name>dfs.block.size</name><value>67108864</value></property>
-<property><name>fs.s3.buffer.dir</name><value>${hadoop.tmp.dir}/s3</value></property>
-<property><name>job.end.retry.attempts</name><value>0</value></property>
-<property><name>fs.file.impl</name><value>org.apache.hadoop.fs.LocalFileSystem</value></property>
-<property><name>mapred.local.dir.minspacestart</name><value>0</value></property>
-<property><name>mapred.output.compression.type</name><value>RECORD</value></property>
-<property><name>dfs.datanode.ipc.address</name><value>127.0.0.1:0</value></property>
-<property><name>dfs.permissions</name><value>true</value></property>
-<property><name>topology.script.number.args</name><value>100</value></property>
-<property><name>io.mapfile.bloom.error.rate</name><value>0.005</value></property>
-<property><name>mapred.max.tracker.blacklists</name><value>4</value></property>
-<property><name>mapred.task.profile.maps</name><value>0-2</value></property>
-<property><name>dfs.datanode.https.address</name><value>0.0.0.0:50475</value></property>
-<property><name>mapred.userlog.retain.hours</name><value>24</value></property>
-<property><name>dfs.secondary.http.address</name><value>0.0.0.0:50090</value></property>
-<property><name>dfs.replication.max</name><value>512</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.active</name><value>false</value></property>
-<property><name>hadoop.security.authorization</name><value>false</value></property>
-<property><name>local.cache.size</name><value>10737418240</value></property>
-<property><name>mapred.min.split.size</name><value>0</value></property>
-<property><name>mapred.map.tasks</name><value>2</value></property>
-<property><name>mapred.child.java.opts</name><value>-Xmx200m</value></property>
-<property><name>dfs.https.client.keystore.resource</name><value>ssl-client.xml</value></property>
-<property><name>dfs.namenode.startup</name><value>REGULAR</value></property>
-<property><name>mapred.job.queue.name</name><value>default</value></property>
-<property><name>dfs.https.address</name><value>0.0.0.0:50470</value></property>
-<property><name>dfs.balance.bandwidthPerSec</name><value>1048576</value></property>
-<property><name>ipc.server.listen.queue.size</name><value>128</value></property>
-<property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>
-<property><name>job.end.retry.interval</name><value>30000</value></property>
-<property><name>mapred.skip.attempts.to.start.skipping</name><value>2</value></property>
-<property><name>fs.checkpoint.dir</name><value>build/test/data/dfs/namesecondary1,build/test/data/dfs/namesecondary2</value></property>
-<property><name>mapred.reduce.tasks</name><value>1</value></property>
-<property><name>mapred.merge.recordsBeforeProgress</name><value>10000</value></property>
-<property><name>mapred.userlog.limit.kb</name><value>0</value></property>
-<property><name>dfs.max.objects</name><value>0</value></property>
-<property><name>webinterface.private.actions</name><value>false</value></property>
-<property><name>io.sort.spill.percent</name><value>0.80</value></property>
-<property><name>mapred.job.shuffle.input.buffer.percent</name><value>0.70</value></property>
-<property><name>dfs.datanode.dns.nameserver</name><value>default</value></property>
-<property><name>mapred.map.tasks.speculative.execution</name><value>true</value></property>
-<property><name>hadoop.util.hash.type</name><value>murmur</value></property>
-<property><name>dfs.blockreport.intervalMsec</name><value>3600000</value></property>
-<property><name>mapred.map.max.attempts</name><value>4</value></property>
-<property><name>dfs.client.block.write.retries</name><value>3</value></property>
-<property><name>mapred.job.tracker.handler.count</name><value>10</value></property>
-<property><name>mapred.tasktracker.expiry.interval</name><value>600000</value></property>
-<property><name>dfs.https.enable</name><value>false</value></property>
-<property><name>mapred.jobtracker.maxtasks.per.job</name><value>-1</value></property>
-<property><name>mapred.jobtracker.job.history.block.size</name><value>3145728</value></property>
-<property><name>keep.failed.task.files</name><value>false</value></property>
-<property><name>ipc.client.tcpnodelay</name><value>false</value></property>
-<property><name>mapred.task.profile.reduces</name><value>0-2</value></property>
-<property><name>mapred.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
-<property><name>io.map.index.skip</name><value>0</value></property>
-<property><name>ipc.server.tcpnodelay</name><value>false</value></property>
-<property><name>dfs.default.chunk.view.size</name><value>32768</value></property>
-<property><name>hadoop.logfile.size</name><value>10000000</value></property>
-<property><name>mapred.reduce.tasks.speculative.execution</name><value>true</value></property>
-<property><name>dfs.datanode.du.reserved</name><value>0</value></property>
-<property><name>fs.checkpoint.period</name><value>3600</value></property>
-<property><name>dfs.web.ugi</name><value>webuser,webgroup</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>dfs.df.interval</name><value>60000</value></property>
-<property><name>dfs.data.dir</name><value>${hadoop.tmp.dir}/dfs/data</value></property>
-<property><name>fs.s3.maxRetries</name><value>4</value></property>
-<property><name>dfs.datanode.dns.interface</name><value>default</value></property>
-<property><name>dfs.support.append</name><value>false</value></property>
-<property><name>dfs.permissions.supergroup</name><value>supergroup</value></property>
-<property><name>mapred.local.dir</name><value>${hadoop.tmp.dir}/mapred/local</value></property>
-<property><name>fs.hftp.impl</name><value>org.apache.hadoop.hdfs.HftpFileSystem</value></property>
-<property><name>fs.trash.interval</name><value>0</value></property>
-<property><name>fs.s3.sleepTimeSeconds</name><value>10</value></property>
-<property><name>dfs.replication.min</name><value>1</value></property>
-<property><name>mapred.submit.replication</name><value>10</value></property>
-<property><name>fs.har.impl</name><value>org.apache.hadoop.fs.HarFileSystem</value></property>
-<property><name>mapred.map.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
-<property><name>mapred.tasktracker.dns.interface</name><value>default</value></property>
-<property><name>dfs.namenode.decommission.interval</name><value>3</value></property>
-<property><name>dfs.http.address</name><value>localhost:62107</value></property>
-<property><name>dfs.heartbeat.interval</name><value>3</value></property>
-<property><name>mapred.job.tracker</name><value>local</value></property>
-<property><name>io.seqfile.sorter.recordlimit</name><value>1000000</value></property>
-<property><name>dfs.name.dir</name><value>build/test/data/dfs/name1,build/test/data/dfs/name2</value></property>
-<property><name>mapred.line.input.format.linespermap</name><value>1</value></property>
-<property><name>mapred.jobtracker.taskScheduler</name><value>org.apache.hadoop.mapred.JobQueueTaskScheduler</value></property>
-<property><name>mapred.tasktracker.instrumentation</name><value>org.apache.hadoop.mapred.TaskTrackerMetricsInst</value></property>
-<property><name>dfs.datanode.http.address</name><value>127.0.0.1:0</value></property>
-<property><name>mapred.tasktracker.procfsbasedprocesstree.sleeptime-before-sigkill</name><value>5000</value></property>
-<property><name>mapred.local.dir.minspacekill</name><value>0</value></property>
-<property><name>dfs.replication.interval</name><value>3</value></property>
-<property><name>io.sort.record.percent</name><value>0.05</value></property>
-<property><name>fs.kfs.impl</name><value>org.apache.hadoop.fs.kfs.KosmosFileSystem</value></property>
-<property><name>mapred.temp.dir</name><value>${hadoop.tmp.dir}/mapred/temp</value></property>
-<property><name>mapred.tasktracker.reduce.tasks.maximum</name><value>2</value></property>
-<property><name>dfs.replication</name><value>2</value></property>
-<property><name>fs.checkpoint.edits.dir</name><value>${fs.checkpoint.dir}</value></property>
-<property><name>mapred.job.reduce.input.buffer.percent</name><value>0.0</value></property>
-<property><name>mapred.tasktracker.indexcache.mb</name><value>10</value></property>
-<property><name>hadoop.logfile.count</name><value>10</value></property>
-<property><name>mapred.skip.reduce.auto.incr.proc.count</name><value>true</value></property>
-<property><name>io.seqfile.compress.blocksize</name><value>1000000</value></property>
-<property><name>fs.s3.block.size</name><value>67108864</value></property>
-<property><name>mapred.tasktracker.taskmemorymanager.monitoring-interval</name><value>5000</value></property>
-<property><name>mapred.acls.enabled</name><value>false</value></property>
-<property><name>mapred.queue.names</name><value>default</value></property>
-<property><name>dfs.access.time.precision</name><value>3600000</value></property>
-<property><name>fs.hsftp.impl</name><value>org.apache.hadoop.hdfs.HsftpFileSystem</value></property>
-<property><name>mapred.task.tracker.http.address</name><value>0.0.0.0:50060</value></property>
-<property><name>mapred.reduce.parallel.copies</name><value>5</value></property>
-<property><name>io.seqfile.lazydecompress</name><value>true</value></property>
-<property><name>io.sort.mb</name><value>100</value></property>
-<property><name>ipc.client.connection.maxidletime</name><value>10000</value></property>
-<property><name>mapred.compress.map.output</name><value>false</value></property>
-<property><name>mapred.task.tracker.report.address</name><value>127.0.0.1:0</value></property>
-<property><name>ipc.client.kill.max</name><value>10</value></property>
-<property><name>ipc.client.connect.max.retries</name><value>10</value></property>
-<property><name>fs.s3.impl</name><value>org.apache.hadoop.fs.s3.S3FileSystem</value></property>
-<property><name>mapred.job.tracker.http.address</name><value>0.0.0.0:50030</value></property>
-<property><name>io.file.buffer.size</name><value>4096</value></property>
-<property><name>mapred.jobtracker.restart.recover</name><value>false</value></property>
-<property><name>io.serializations</name><value>org.apache.hadoop.io.serializer.WritableSerialization</value></property>
-<property><name>dfs.datanode.handler.count</name><value>3</value></property>
-<property><name>mapred.reduce.copy.backoff</name><value>300</value></property>
-<property><name>mapred.task.profile</name><value>false</value></property>
-<property><name>dfs.replication.considerLoad</name><value>true</value></property>
-<property><name>jobclient.output.filter</name><value>FAILED</value></property>
-<property><name>mapred.tasktracker.map.tasks.maximum</name><value>2</value></property>
-<property><name>io.compression.codecs</name><value>org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec</value></property>
-<property><name>fs.checkpoint.size</name><value>67108864</value></property>
-</configuration>
\ No newline at end of file
diff --git a/genomix/genomix-hadoop/actual5/conf.xml b/genomix/genomix-hadoop/actual5/conf.xml
deleted file mode 100644
index d19b061..0000000
--- a/genomix/genomix-hadoop/actual5/conf.xml
+++ /dev/null
@@ -1,179 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?><configuration>
-<property><name>fs.s3n.impl</name><value>org.apache.hadoop.fs.s3native.NativeS3FileSystem</value></property>
-<property><name>mapred.task.cache.levels</name><value>2</value></property>
-<property><name>hadoop.tmp.dir</name><value>/tmp/hadoop-${user.name}</value></property>
-<property><name>hadoop.native.lib</name><value>true</value></property>
-<property><name>map.sort.class</name><value>org.apache.hadoop.util.QuickSort</value></property>
-<property><name>dfs.namenode.decommission.nodes.per.interval</name><value>5</value></property>
-<property><name>dfs.https.need.client.auth</name><value>false</value></property>
-<property><name>ipc.client.idlethreshold</name><value>4000</value></property>
-<property><name>mapred.system.dir</name><value>${hadoop.tmp.dir}/mapred/system</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.hours</name><value>0</value></property>
-<property><name>dfs.namenode.logging.level</name><value>info</value></property>
-<property><name>dfs.datanode.address</name><value>127.0.0.1:0</value></property>
-<property><name>io.skip.checksum.errors</name><value>false</value></property>
-<property><name>fs.default.name</name><value>hdfs://localhost:58289</value></property>
-<property><name>mapred.child.tmp</name><value>./tmp</value></property>
-<property><name>fs.har.impl.disable.cache</name><value>true</value></property>
-<property><name>dfs.safemode.threshold.pct</name><value>0.999f</value></property>
-<property><name>mapred.skip.reduce.max.skip.groups</name><value>0</value></property>
-<property><name>dfs.namenode.handler.count</name><value>10</value></property>
-<property><name>dfs.blockreport.initialDelay</name><value>0</value></property>
-<property><name>mapred.jobtracker.instrumentation</name><value>org.apache.hadoop.mapred.JobTrackerMetricsInst</value></property>
-<property><name>mapred.tasktracker.dns.nameserver</name><value>default</value></property>
-<property><name>io.sort.factor</name><value>10</value></property>
-<property><name>mapred.task.timeout</name><value>600000</value></property>
-<property><name>mapred.max.tracker.failures</name><value>4</value></property>
-<property><name>hadoop.rpc.socket.factory.class.default</name><value>org.apache.hadoop.net.StandardSocketFactory</value></property>
-<property><name>fs.hdfs.impl</name><value>org.apache.hadoop.hdfs.DistributedFileSystem</value></property>
-<property><name>mapred.queue.default.acl-administer-jobs</name><value>*</value></property>
-<property><name>mapred.queue.default.acl-submit-job</name><value>*</value></property>
-<property><name>mapred.skip.map.auto.incr.proc.count</name><value>true</value></property>
-<property><name>io.mapfile.bloom.size</name><value>1048576</value></property>
-<property><name>dfs.safemode.extension</name><value>0</value></property>
-<property><name>tasktracker.http.threads</name><value>40</value></property>
-<property><name>mapred.job.shuffle.merge.percent</name><value>0.66</value></property>
-<property><name>fs.ftp.impl</name><value>org.apache.hadoop.fs.ftp.FTPFileSystem</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>topology.node.switch.mapping.impl</name><value>org.apache.hadoop.net.StaticMapping</value></property>
-<property><name>dfs.https.server.keystore.resource</name><value>ssl-server.xml</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>
-<property><name>fs.ramfs.impl</name><value>org.apache.hadoop.fs.InMemoryFileSystem</value></property>
-<property><name>dfs.name.edits.dir</name><value>${dfs.name.dir}</value></property>
-<property><name>mapred.skip.map.max.skip.records</name><value>0</value></property>
-<property><name>hadoop.job.ugi</name><value>hadoop,staff,everyone,localaccounts</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.dir</name><value>/jobtracker/jobsInfo</value></property>
-<property><name>dfs.block.size</name><value>67108864</value></property>
-<property><name>fs.s3.buffer.dir</name><value>${hadoop.tmp.dir}/s3</value></property>
-<property><name>job.end.retry.attempts</name><value>0</value></property>
-<property><name>fs.file.impl</name><value>org.apache.hadoop.fs.LocalFileSystem</value></property>
-<property><name>mapred.local.dir.minspacestart</name><value>0</value></property>
-<property><name>mapred.output.compression.type</name><value>RECORD</value></property>
-<property><name>dfs.datanode.ipc.address</name><value>127.0.0.1:0</value></property>
-<property><name>dfs.permissions</name><value>true</value></property>
-<property><name>topology.script.number.args</name><value>100</value></property>
-<property><name>io.mapfile.bloom.error.rate</name><value>0.005</value></property>
-<property><name>mapred.max.tracker.blacklists</name><value>4</value></property>
-<property><name>mapred.task.profile.maps</name><value>0-2</value></property>
-<property><name>dfs.datanode.https.address</name><value>0.0.0.0:50475</value></property>
-<property><name>mapred.userlog.retain.hours</name><value>24</value></property>
-<property><name>dfs.secondary.http.address</name><value>0.0.0.0:50090</value></property>
-<property><name>dfs.replication.max</name><value>512</value></property>
-<property><name>mapred.job.tracker.persist.jobstatus.active</name><value>false</value></property>
-<property><name>hadoop.security.authorization</name><value>false</value></property>
-<property><name>local.cache.size</name><value>10737418240</value></property>
-<property><name>mapred.min.split.size</name><value>0</value></property>
-<property><name>mapred.map.tasks</name><value>2</value></property>
-<property><name>mapred.child.java.opts</name><value>-Xmx200m</value></property>
-<property><name>dfs.https.client.keystore.resource</name><value>ssl-client.xml</value></property>
-<property><name>dfs.namenode.startup</name><value>REGULAR</value></property>
-<property><name>mapred.job.queue.name</name><value>default</value></property>
-<property><name>dfs.https.address</name><value>0.0.0.0:50470</value></property>
-<property><name>dfs.balance.bandwidthPerSec</name><value>1048576</value></property>
-<property><name>ipc.server.listen.queue.size</name><value>128</value></property>
-<property><name>mapred.inmem.merge.threshold</name><value>1000</value></property>
-<property><name>job.end.retry.interval</name><value>30000</value></property>
-<property><name>mapred.skip.attempts.to.start.skipping</name><value>2</value></property>
-<property><name>fs.checkpoint.dir</name><value>build/test/data/dfs/namesecondary1,build/test/data/dfs/namesecondary2</value></property>
-<property><name>mapred.reduce.tasks</name><value>1</value></property>
-<property><name>mapred.merge.recordsBeforeProgress</name><value>10000</value></property>
-<property><name>mapred.userlog.limit.kb</name><value>0</value></property>
-<property><name>dfs.max.objects</name><value>0</value></property>
-<property><name>webinterface.private.actions</name><value>false</value></property>
-<property><name>io.sort.spill.percent</name><value>0.80</value></property>
-<property><name>mapred.job.shuffle.input.buffer.percent</name><value>0.70</value></property>
-<property><name>dfs.datanode.dns.nameserver</name><value>default</value></property>
-<property><name>mapred.map.tasks.speculative.execution</name><value>true</value></property>
-<property><name>hadoop.util.hash.type</name><value>murmur</value></property>
-<property><name>dfs.blockreport.intervalMsec</name><value>3600000</value></property>
-<property><name>mapred.map.max.attempts</name><value>4</value></property>
-<property><name>dfs.client.block.write.retries</name><value>3</value></property>
-<property><name>mapred.job.tracker.handler.count</name><value>10</value></property>
-<property><name>mapred.tasktracker.expiry.interval</name><value>600000</value></property>
-<property><name>dfs.https.enable</name><value>false</value></property>
-<property><name>mapred.jobtracker.maxtasks.per.job</name><value>-1</value></property>
-<property><name>mapred.jobtracker.job.history.block.size</name><value>3145728</value></property>
-<property><name>keep.failed.task.files</name><value>false</value></property>
-<property><name>ipc.client.tcpnodelay</name><value>false</value></property>
-<property><name>mapred.task.profile.reduces</name><value>0-2</value></property>
-<property><name>mapred.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
-<property><name>io.map.index.skip</name><value>0</value></property>
-<property><name>ipc.server.tcpnodelay</name><value>false</value></property>
-<property><name>dfs.default.chunk.view.size</name><value>32768</value></property>
-<property><name>hadoop.logfile.size</name><value>10000000</value></property>
-<property><name>mapred.reduce.tasks.speculative.execution</name><value>true</value></property>
-<property><name>dfs.datanode.du.reserved</name><value>0</value></property>
-<property><name>fs.checkpoint.period</name><value>3600</value></property>
-<property><name>dfs.web.ugi</name><value>webuser,webgroup</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>dfs.df.interval</name><value>60000</value></property>
-<property><name>dfs.data.dir</name><value>${hadoop.tmp.dir}/dfs/data</value></property>
-<property><name>fs.s3.maxRetries</name><value>4</value></property>
-<property><name>dfs.datanode.dns.interface</name><value>default</value></property>
-<property><name>dfs.support.append</name><value>false</value></property>
-<property><name>dfs.permissions.supergroup</name><value>supergroup</value></property>
-<property><name>mapred.local.dir</name><value>${hadoop.tmp.dir}/mapred/local</value></property>
-<property><name>fs.hftp.impl</name><value>org.apache.hadoop.hdfs.HftpFileSystem</value></property>
-<property><name>fs.trash.interval</name><value>0</value></property>
-<property><name>fs.s3.sleepTimeSeconds</name><value>10</value></property>
-<property><name>dfs.replication.min</name><value>1</value></property>
-<property><name>mapred.submit.replication</name><value>10</value></property>
-<property><name>fs.har.impl</name><value>org.apache.hadoop.fs.HarFileSystem</value></property>
-<property><name>mapred.map.output.compression.codec</name><value>org.apache.hadoop.io.compress.DefaultCodec</value></property>
-<property><name>mapred.tasktracker.dns.interface</name><value>default</value></property>
-<property><name>dfs.namenode.decommission.interval</name><value>3</value></property>
-<property><name>dfs.http.address</name><value>localhost:58290</value></property>
-<property><name>dfs.heartbeat.interval</name><value>3</value></property>
-<property><name>mapred.job.tracker</name><value>local</value></property>
-<property><name>io.seqfile.sorter.recordlimit</name><value>1000000</value></property>
-<property><name>dfs.name.dir</name><value>build/test/data/dfs/name1,build/test/data/dfs/name2</value></property>
-<property><name>mapred.line.input.format.linespermap</name><value>1</value></property>
-<property><name>mapred.jobtracker.taskScheduler</name><value>org.apache.hadoop.mapred.JobQueueTaskScheduler</value></property>
-<property><name>mapred.tasktracker.instrumentation</name><value>org.apache.hadoop.mapred.TaskTrackerMetricsInst</value></property>
-<property><name>dfs.datanode.http.address</name><value>127.0.0.1:0</value></property>
-<property><name>mapred.tasktracker.procfsbasedprocesstree.sleeptime-before-sigkill</name><value>5000</value></property>
-<property><name>mapred.local.dir.minspacekill</name><value>0</value></property>
-<property><name>dfs.replication.interval</name><value>3</value></property>
-<property><name>io.sort.record.percent</name><value>0.05</value></property>
-<property><name>fs.kfs.impl</name><value>org.apache.hadoop.fs.kfs.KosmosFileSystem</value></property>
-<property><name>mapred.temp.dir</name><value>${hadoop.tmp.dir}/mapred/temp</value></property>
-<property><name>mapred.tasktracker.reduce.tasks.maximum</name><value>2</value></property>
-<property><name>dfs.replication</name><value>2</value></property>
-<property><name>fs.checkpoint.edits.dir</name><value>${fs.checkpoint.dir}</value></property>
-<property><name>mapred.job.reduce.input.buffer.percent</name><value>0.0</value></property>
-<property><name>mapred.tasktracker.indexcache.mb</name><value>10</value></property>
-<property><name>hadoop.logfile.count</name><value>10</value></property>
-<property><name>mapred.skip.reduce.auto.incr.proc.count</name><value>true</value></property>
-<property><name>io.seqfile.compress.blocksize</name><value>1000000</value></property>
-<property><name>fs.s3.block.size</name><value>67108864</value></property>
-<property><name>mapred.tasktracker.taskmemorymanager.monitoring-interval</name><value>5000</value></property>
-<property><name>mapred.acls.enabled</name><value>false</value></property>
-<property><name>mapred.queue.names</name><value>default</value></property>
-<property><name>dfs.access.time.precision</name><value>3600000</value></property>
-<property><name>fs.hsftp.impl</name><value>org.apache.hadoop.hdfs.HsftpFileSystem</value></property>
-<property><name>mapred.task.tracker.http.address</name><value>0.0.0.0:50060</value></property>
-<property><name>mapred.reduce.parallel.copies</name><value>5</value></property>
-<property><name>io.seqfile.lazydecompress</name><value>true</value></property>
-<property><name>io.sort.mb</name><value>100</value></property>
-<property><name>ipc.client.connection.maxidletime</name><value>10000</value></property>
-<property><name>mapred.compress.map.output</name><value>false</value></property>
-<property><name>mapred.task.tracker.report.address</name><value>127.0.0.1:0</value></property>
-<property><name>ipc.client.kill.max</name><value>10</value></property>
-<property><name>ipc.client.connect.max.retries</name><value>10</value></property>
-<property><name>fs.s3.impl</name><value>org.apache.hadoop.fs.s3.S3FileSystem</value></property>
-<property><name>mapred.job.tracker.http.address</name><value>0.0.0.0:50030</value></property>
-<property><name>io.file.buffer.size</name><value>4096</value></property>
-<property><name>mapred.jobtracker.restart.recover</name><value>false</value></property>
-<property><name>io.serializations</name><value>org.apache.hadoop.io.serializer.WritableSerialization</value></property>
-<property><name>dfs.datanode.handler.count</name><value>3</value></property>
-<property><name>mapred.reduce.copy.backoff</name><value>300</value></property>
-<property><name>mapred.task.profile</name><value>false</value></property>
-<property><name>dfs.replication.considerLoad</name><value>true</value></property>
-<property><name>jobclient.output.filter</name><value>FAILED</value></property>
-<property><name>mapred.tasktracker.map.tasks.maximum</name><value>2</value></property>
-<property><name>io.compression.codecs</name><value>org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec</value></property>
-<property><name>fs.checkpoint.size</name><value>67108864</value></property>
-</configuration>
\ No newline at end of file
diff --git a/genomix/genomix-hadoop/actual5/result5/.part-00000.crc b/genomix/genomix-hadoop/actual5/result5/.part-00000.crc
deleted file mode 100644
index dafaae3..0000000
--- a/genomix/genomix-hadoop/actual5/result5/.part-00000.crc
+++ /dev/null
Binary files differ
diff --git a/genomix/genomix-hadoop/actual5/result5/part-00000 b/genomix/genomix-hadoop/actual5/result5/part-00000
deleted file mode 100755
index deeff28..0000000
--- a/genomix/genomix-hadoop/actual5/result5/part-00000
+++ /dev/null
Binary files differ
diff --git a/genomix/genomix-hadoop/compare/result1/comparesource.txt b/genomix/genomix-hadoop/compare/result1/comparesource.txt
deleted file mode 100644
index ba52008..0000000
--- a/genomix/genomix-hadoop/compare/result1/comparesource.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-GCA	ACT|T	3
-AGC	|A	1
-CGC	T|AT	2
-TGC	|A	1
-ATC	C|G	2
-TCG	A|C	2
-CAT	G|C	2
-GCT	C|	1
diff --git a/genomix/genomix-hadoop/compare/result2/comparesource.txt b/genomix/genomix-hadoop/compare/result2/comparesource.txt
deleted file mode 100644
index db55a38..0000000
--- a/genomix/genomix-hadoop/compare/result2/comparesource.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-GCA	-72
-AGC	1
-CGC	-119
-TGC	1
-ATC	36
-TCG	18
-CAT	66
-GCT	32
diff --git a/genomix/genomix-hadoop/compare/result3/comparesource.txt b/genomix/genomix-hadoop/compare/result3/comparesource.txt
deleted file mode 100644
index 5f9dd78..0000000
--- a/genomix/genomix-hadoop/compare/result3/comparesource.txt
+++ /dev/null
@@ -1 +0,0 @@
-02 71	66	1
diff --git a/genomix/genomix-hadoop/compare/result5/comparesource.txt b/genomix/genomix-hadoop/compare/result5/comparesource.txt
deleted file mode 100644
index 6f4bd5e..0000000
--- a/genomix/genomix-hadoop/compare/result5/comparesource.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-GCA	AT|T	2
-AGC	|A	1
-TGC	|A	1
diff --git a/genomix/genomix-hadoop/data/.DS_Store b/genomix/genomix-hadoop/data/.DS_Store
new file mode 100644
index 0000000..07f4ca0
--- /dev/null
+++ b/genomix/genomix-hadoop/data/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/data/webmap/.DS_Store b/genomix/genomix-hadoop/data/webmap/.DS_Store
new file mode 100644
index 0000000..17172c4
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/data/webmap/BridgePath b/genomix/genomix-hadoop/data/webmap/BridgePath
new file mode 100644
index 0000000..0717611
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/BridgePath
@@ -0,0 +1,2 @@
+TTTCCACTCCGTG
+TTTCCACCCCGTG
\ No newline at end of file
diff --git a/genomix/genomix-hadoop/data/webmap/CyclePath b/genomix/genomix-hadoop/data/webmap/CyclePath
new file mode 100644
index 0000000..04080f4
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/CyclePath
@@ -0,0 +1 @@
+GCAACTTCATCAACT
\ No newline at end of file
diff --git a/genomix/genomix-hadoop/data/webmap/SimplePath b/genomix/genomix-hadoop/data/webmap/SimplePath
new file mode 100644
index 0000000..80c03af
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/SimplePath
@@ -0,0 +1,3 @@
+ATATCGCATC
+AAGACAGCAC
+GCGGCAAGAA
diff --git a/genomix/genomix-hadoop/data/webmap/SinglePath b/genomix/genomix-hadoop/data/webmap/SinglePath
new file mode 100644
index 0000000..56ef5f8
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/SinglePath
@@ -0,0 +1 @@
+AGACAACAGT
diff --git a/genomix/genomix-hadoop/data/webmap/TreePath b/genomix/genomix-hadoop/data/webmap/TreePath
new file mode 100644
index 0000000..f3c13ce
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/TreePath
@@ -0,0 +1,3 @@
+GGCCTGGCTATCCC
+GGCCTCAGTAACTAAAC
+GGCCTCAGTACGCCCGG
\ No newline at end of file
diff --git a/genomix/genomix-hadoop/data/webmap/simplePath~ b/genomix/genomix-hadoop/data/webmap/simplePath~
new file mode 100644
index 0000000..6615392
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/simplePath~
@@ -0,0 +1 @@
+AGCATGCTATAT
diff --git a/genomix/genomix-hadoop/data/webmap/text.txt b/genomix/genomix-hadoop/data/webmap/text.txt
deleted file mode 100755
index c6cd7fe..0000000
--- a/genomix/genomix-hadoop/data/webmap/text.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-@625E1AAXX100810:1:100:10000:10271/1
-AATAGAAGATCGAT
-+
-EDBDB?BEEEDGGEGGGDGGGA>DG@GGD;GD@DG@F?<B<BFFD?
diff --git a/genomix/genomix-hadoop/pom.xml b/genomix/genomix-hadoop/pom.xml
index f791f5b..fe83c3c 100755
--- a/genomix/genomix-hadoop/pom.xml
+++ b/genomix/genomix-hadoop/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>genomix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<properties>
@@ -22,8 +22,9 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>2.0.2</version>
 				<configuration>
-					<source>1.6</source>
-					<target>1.6</target>
+					<source>1.7</source>
+					<target>1.7</target>
+					<fork>true</fork>
 				</configuration>
 			</plugin>
 			<plugin>
@@ -151,7 +152,7 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>genomix-data</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/genomix/genomix-hadoop/src/.DS_Store b/genomix/genomix-hadoop/src/.DS_Store
new file mode 100644
index 0000000..e0bf627
--- /dev/null
+++ b/genomix/genomix-hadoop/src/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/.DS_Store b/genomix/genomix-hadoop/src/main/.DS_Store
new file mode 100644
index 0000000..325c6de
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/java/.DS_Store b/genomix/genomix-hadoop/src/main/java/.DS_Store
new file mode 100644
index 0000000..dd6c872
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/java/edu/.DS_Store b/genomix/genomix-hadoop/src/main/java/edu/.DS_Store
new file mode 100644
index 0000000..5e0c641
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/.DS_Store b/genomix/genomix-hadoop/src/main/java/edu/uci/.DS_Store
new file mode 100644
index 0000000..4f27e83
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/.DS_Store b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/.DS_Store
new file mode 100644
index 0000000..8f46380
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/gbresultschecking/.DS_Store b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/gbresultschecking/.DS_Store
new file mode 100644
index 0000000..f5eb144
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/gbresultschecking/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/.DS_Store b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/.DS_Store
new file mode 100644
index 0000000..f9e3926
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathDriver.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathDriver.java
index cfdf8d5..36c12ae 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathDriver.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathDriver.java
@@ -23,12 +23,15 @@
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.SequenceFileInputFormat;
 import org.apache.hadoop.mapred.SequenceFileOutputFormat;
+import org.apache.hadoop.mapred.TextOutputFormat;
 import org.apache.hadoop.mapred.lib.MultipleOutputs;
 import org.apache.hadoop.mapred.lib.MultipleSequenceFileOutputFormat;
+import org.apache.hadoop.mapred.lib.MultipleTextOutputFormat;
 import org.kohsuke.args4j.CmdLineParser;
 import org.kohsuke.args4j.Option;
 
 import edu.uci.ics.genomix.type.KmerBytesWritable;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
 
 @SuppressWarnings("deprecation")
 public class MergePathDriver {
@@ -74,7 +77,7 @@
         conf.setInputFormat(SequenceFileInputFormat.class);
         conf.setOutputFormat(SequenceFileOutputFormat.class);
         
-        conf.setOutputKeyClass(KmerBytesWritable.class);
+        conf.setOutputKeyClass(VKmerBytesWritable.class);
         conf.setOutputValueClass(MergePathValueWritable.class);
         
         FileInputFormat.setInputPaths(conf, new Path(inputPath));
@@ -83,8 +86,9 @@
         FileSystem dfs = FileSystem.get(conf);
         dfs.delete(new Path(inputPath + "-step1"), true);
         JobClient.runJob(conf);
+        int iMerge = 0;
 /*----------------------------------------------------------------------*/
-        for(int iMerge = 0; iMerge < mergeRound; iMerge ++){
+        for(iMerge = 0; iMerge < mergeRound; iMerge ++){
         
             conf = new JobConf(MergePathDriver.class);
             conf.setInt("sizeKmer", sizeKmer);
@@ -98,24 +102,23 @@
             conf.setMapperClass(MergePathMapper.class);
             conf.setReducerClass(MergePathReducer.class);
             
-            conf.setMapOutputKeyClass(KmerBytesWritable.class);
+            conf.setMapOutputKeyClass(VKmerBytesWritable.class);
             conf.setMapOutputValueClass(MergePathValueWritable.class);
             
             conf.setInputFormat(SequenceFileInputFormat.class);
-            conf.setOutputFormat(MultipleSequenceFileOutputFormat.class);
             
             String uncomplete = "uncomplete" + iMerge;
             String complete = "complete" + iMerge;
            
             MultipleOutputs.addNamedOutput(conf, uncomplete,
-                    MergePathMultiSeqOutputFormat.class, KmerBytesWritable.class,
+                    MergePathMultiSeqOutputFormat.class, VKmerBytesWritable.class,
                     MergePathValueWritable.class);
 
             MultipleOutputs.addNamedOutput(conf, complete,
-                    MergePathMultiSeqOutputFormat.class, KmerBytesWritable.class,
+                    MergePathMultiSeqOutputFormat.class, VKmerBytesWritable.class,
                     MergePathValueWritable.class);
             
-            conf.setOutputKeyClass(KmerBytesWritable.class);
+            conf.setOutputKeyClass(VKmerBytesWritable.class);
             conf.setOutputValueClass(MergePathValueWritable.class);
             
             FileInputFormat.setInputPaths(conf, new Path(inputPath + "-step1"));
@@ -127,6 +130,46 @@
             dfs.rename(new Path(outputPath + "/" + uncomplete), new Path(inputPath + "-step1"));
             dfs.rename(new Path(outputPath + "/" + complete), new Path(mergeResultPath + "/" + complete));
         }
+        /*----------------------------------------*/
+        conf = new JobConf(MergePathDriver.class);
+        conf.setInt("sizeKmer", sizeKmer);
+        conf.setInt("iMerge", iMerge);
+        
+        if (defaultConfPath != null) {
+            conf.addResource(new Path(defaultConfPath));
+        }
+        conf.setJobName("Path Merge");
+        
+        conf.setMapperClass(MergePathMapper.class);
+        conf.setReducerClass(MergePathReducer.class);
+        
+        conf.setMapOutputKeyClass(VKmerBytesWritable.class);
+        conf.setMapOutputValueClass(MergePathValueWritable.class);
+        
+        conf.setInputFormat(SequenceFileInputFormat.class);
+        
+        String uncomplete = "uncomplete" + iMerge;
+        String complete = "complete" + iMerge;
+       
+        MultipleOutputs.addNamedOutput(conf, uncomplete,
+                MergePathMultiSeqOutputFormat.class, VKmerBytesWritable.class,
+                MergePathValueWritable.class);
+
+        MultipleOutputs.addNamedOutput(conf, complete,
+                MergePathMultiSeqOutputFormat.class, VKmerBytesWritable.class,
+                MergePathValueWritable.class);
+        
+        conf.setOutputKeyClass(VKmerBytesWritable.class);
+        conf.setOutputValueClass(MergePathValueWritable.class);
+        
+        FileInputFormat.setInputPaths(conf, new Path(inputPath + "-step1"));
+        FileOutputFormat.setOutputPath(conf, new Path(outputPath));
+        conf.setNumReduceTasks(numReducers);
+        dfs.delete(new Path(outputPath), true);
+        JobClient.runJob(conf);
+        dfs.delete(new Path(inputPath + "-step1"), true);
+        dfs.rename(new Path(outputPath + "/" + uncomplete), new Path(inputPath + "-step1"));
+        dfs.rename(new Path(outputPath + "/" + complete), new Path(mergeResultPath + "/" + complete));
     }
 
     public static void main(String[] args) throws Exception {
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathMapper.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathMapper.java
index c3255f2..0c7dcc1 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathMapper.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathMapper.java
@@ -20,32 +20,31 @@
 import org.apache.hadoop.mapred.Mapper;
 import org.apache.hadoop.mapred.OutputCollector;
 import org.apache.hadoop.mapred.Reporter;
-
 import edu.uci.ics.genomix.type.GeneCode;
-import edu.uci.ics.genomix.type.KmerBytesWritable;
 import edu.uci.ics.genomix.type.VKmerBytesWritable;
 import edu.uci.ics.genomix.type.VKmerBytesWritableFactory;
 
 @SuppressWarnings("deprecation")
 public class MergePathMapper extends MapReduceBase implements
-        Mapper<KmerBytesWritable, MergePathValueWritable, KmerBytesWritable, MergePathValueWritable> {
+        Mapper<VKmerBytesWritable, MergePathValueWritable, VKmerBytesWritable, MergePathValueWritable> {
     private int KMER_SIZE;
     private VKmerBytesWritableFactory outputKmerFactory;
-    private MergePathValueWritable outputAdjList; 
+    private MergePathValueWritable outputValue; 
     private VKmerBytesWritable tmpKmer;
     private VKmerBytesWritable outputKmer;
 
+
     public void configure(JobConf job) {
         KMER_SIZE = job.getInt("sizeKmer", 0);
         outputKmerFactory = new VKmerBytesWritableFactory(KMER_SIZE);
-        outputAdjList = new MergePathValueWritable();
+        outputValue = new MergePathValueWritable();
         tmpKmer = new VKmerBytesWritable(KMER_SIZE);
         outputKmer = new VKmerBytesWritable(KMER_SIZE);
     }
 
     @Override
-    public void map(KmerBytesWritable key, MergePathValueWritable value,
-            OutputCollector<KmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
+    public void map(VKmerBytesWritable key, MergePathValueWritable value,
+            OutputCollector<VKmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
 
         byte precursor = (byte) 0xF0;
         byte succeed = (byte) 0x0F;
@@ -54,19 +53,18 @@
         precursor = (byte) (precursor & adjBitMap);
         precursor = (byte) ((precursor & 0xff) >> 4);
         succeed = (byte) (succeed & adjBitMap);
-
-        if (bitFlag == 1) {
+       if (bitFlag == 1) {
             byte succeedCode = GeneCode.getGeneCodeFromBitMap(succeed);
             tmpKmer.set(outputKmerFactory.getLastKmerFromChain(KMER_SIZE, key));
             outputKmer.set(outputKmerFactory.shiftKmerWithNextCode(tmpKmer, succeedCode));
-
-            KmerBytesWritable mergedKmer = outputKmerFactory.getFirstKmerFromChain(value.getKmerSize()
-                    - (KMER_SIZE - 1), value.getKmer());
-            outputAdjList.set(mergedKmer, adjBitMap, bitFlag);
-            output.collect(outputKmer, outputAdjList);
+            
+            tmpKmer.set(outputKmerFactory.getFirstKmerFromChain(key.getKmerLength() - (KMER_SIZE - 1), key));
+            outputValue.set(adjBitMap, bitFlag, tmpKmer);
+            output.collect(outputKmer, outputValue);
         } else {
-            outputAdjList.set(value);
-            output.collect(key, outputAdjList);
+            outputKmer.set(key);
+            outputValue.set(value);
+            output.collect(key, outputValue);
         }
     }
 }
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathMultiSeqOutputFormat.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathMultiSeqOutputFormat.java
index 64fbb91..bd4cd2a 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathMultiSeqOutputFormat.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathMultiSeqOutputFormat.java
@@ -17,9 +17,10 @@
 import java.io.File;
 import org.apache.hadoop.io.BytesWritable;
 import org.apache.hadoop.mapred.lib.MultipleSequenceFileOutputFormat;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
 
 
-public class MergePathMultiSeqOutputFormat extends MultipleSequenceFileOutputFormat<BytesWritable, MergePathValueWritable>{
+public class MergePathMultiSeqOutputFormat extends MultipleSequenceFileOutputFormat<VKmerBytesWritable, MergePathValueWritable>{
     @Override
     protected String generateLeafFileName(String name) {
         // TODO Auto-generated method stub System.out.println(name); 
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathReducer.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathReducer.java
index cead0e8..52abc1c 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathReducer.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathReducer.java
@@ -22,19 +22,18 @@
 import org.apache.hadoop.mapred.Reducer;
 import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.mapred.lib.MultipleOutputs;
-
-import edu.uci.ics.genomix.type.KmerBytesWritable;
 import edu.uci.ics.genomix.type.VKmerBytesWritable;
 import edu.uci.ics.genomix.type.VKmerBytesWritableFactory;
 
 @SuppressWarnings("deprecation")
 public class MergePathReducer extends MapReduceBase implements
-        Reducer<KmerBytesWritable, MergePathValueWritable, KmerBytesWritable, MergePathValueWritable> {
+        Reducer<VKmerBytesWritable, MergePathValueWritable, VKmerBytesWritable, MergePathValueWritable> {
     private VKmerBytesWritableFactory kmerFactory;
     private VKmerBytesWritable outputKmer;
     private VKmerBytesWritable tmpKmer;
     private int KMER_SIZE;
-    private MergePathValueWritable outputAdjList;
+    private MergePathValueWritable outputValue;
+    private MergePathValueWritable tmpOutputValue;
     MultipleOutputs mos = null;
     private int I_MERGE;
 
@@ -42,7 +41,8 @@
         mos = new MultipleOutputs(job);
         I_MERGE = Integer.parseInt(job.get("iMerge"));
         KMER_SIZE = job.getInt("sizeKmer", 0);
-        outputAdjList = new MergePathValueWritable();
+        outputValue = new MergePathValueWritable();
+        tmpOutputValue = new MergePathValueWritable();
         kmerFactory = new VKmerBytesWritableFactory(KMER_SIZE);
         outputKmer = new VKmerBytesWritable(KMER_SIZE);
         tmpKmer = new VKmerBytesWritable(KMER_SIZE);
@@ -50,55 +50,87 @@
 
     @SuppressWarnings("unchecked")
     @Override
-    public void reduce(KmerBytesWritable key, Iterator<MergePathValueWritable> values,
-            OutputCollector<KmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
-        outputAdjList = values.next();
-
-        
+    public void reduce(VKmerBytesWritable key, Iterator<MergePathValueWritable> values,
+            OutputCollector<VKmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
+        outputValue = values.next();
         if (values.hasNext() == true) {
-
-            if (outputAdjList.getFlag() == 1) {
-                byte adjBitMap = outputAdjList.getAdjBitMap();
-                byte bitFlag = outputAdjList.getFlag();
-                outputKmer.set(kmerFactory.mergeTwoKmer(outputAdjList.getKmer(), key));
-                
-                outputAdjList = values.next();
-                byte nextAdj = outputAdjList.getAdjBitMap();
+            if (outputValue.getFlag() != 1) {
+                byte nextAdj = outputValue.getAdjBitMap();
                 byte succeed = (byte) 0x0F;
                 succeed = (byte) (succeed & nextAdj);
+
+                outputValue = values.next();
+                byte adjBitMap = outputValue.getAdjBitMap();
+                byte flag = outputValue.getFlag();
+                if (outputValue.getKmerLength() != 0)
+                    outputKmer.set(kmerFactory.mergeTwoKmer(outputValue.getKmer(), key));
+                else
+                    outputKmer.set(key);
+
                 adjBitMap = (byte) (adjBitMap & 0xF0);
                 adjBitMap = (byte) (adjBitMap | succeed);
-                outputAdjList.set(null, 0, 0, adjBitMap, bitFlag, KMER_SIZE + outputAdjList.getKmerSize());
-
-                mos.getCollector("uncomplete" + I_MERGE, reporter).collect(outputKmer, outputAdjList);
+                outputValue.set(adjBitMap, flag, null);
+                mos.getCollector("uncomplete" + I_MERGE, reporter).collect(outputKmer, outputValue);
             } else {
-                byte nextAdj = outputAdjList.getAdjBitMap();
-                byte succeed = (byte) 0x0F;
-                succeed = (byte) (succeed & nextAdj);
-                outputAdjList = values.next();
-                byte adjBitMap = outputAdjList.getAdjBitMap();
-                byte flag = outputAdjList.getFlag();
-                int kmerSize = outputAdjList.getKmerSize();
-                
-                outputKmer.set(kmerFactory.mergeTwoKmer(outputAdjList.getKmer(), key));
-                adjBitMap = (byte) (adjBitMap & 0xF0);
-                adjBitMap = (byte) (adjBitMap | succeed);
-                outputAdjList.set(null, 0, 0, adjBitMap, flag, KMER_SIZE + kmerSize);
+                tmpOutputValue.set(outputValue);
+                byte tmpAdjMap = tmpOutputValue.getAdjBitMap();
 
-                mos.getCollector("uncomplete" + I_MERGE, reporter).collect(outputKmer, outputAdjList);
+                outputValue = values.next();
+                if (outputValue.getFlag() != 1) {
+                    if (tmpOutputValue.getKmerLength() != 0)
+                        outputKmer.set(kmerFactory.mergeTwoKmer(tmpOutputValue.getKmer(), key));
+                    else
+                        outputKmer.set(key);
+
+                    byte nextAdj = outputValue.getAdjBitMap();
+                    byte succeed = (byte) 0x0F;
+                    succeed = (byte) (succeed & nextAdj);
+                    tmpAdjMap = (byte) (tmpAdjMap & 0xF0);
+                    tmpAdjMap = (byte) (tmpAdjMap | succeed);
+                    outputValue.set(tmpAdjMap, tmpOutputValue.getFlag(), null);
+                    mos.getCollector("uncomplete" + I_MERGE, reporter).collect(outputKmer, outputValue);
+                } else {
+
+                    tmpKmer.set(kmerFactory.getFirstKmerFromChain(KMER_SIZE - 1, key));
+                    if (tmpOutputValue.getKmerLength() != 0)
+                        outputKmer.set(kmerFactory.mergeTwoKmer(tmpOutputValue.getKmer(), tmpKmer));
+                    else
+                        outputKmer.set(tmpKmer);
+                    tmpOutputValue.set(tmpAdjMap, tmpOutputValue.getFlag(), null);
+                    mos.getCollector("complete" + I_MERGE, reporter).collect(outputKmer, tmpOutputValue);
+
+                    tmpKmer.set(kmerFactory.getFirstKmerFromChain(KMER_SIZE - 1, key));
+                    if (outputValue.getKmerLength() != 0)
+                        outputKmer.set(kmerFactory.mergeTwoKmer(outputValue.getKmer(), tmpKmer));
+                    else
+                        outputKmer.set(tmpKmer);
+                    outputValue.set(outputValue.getAdjBitMap(), outputValue.getFlag(), null);
+                    mos.getCollector("complete" + I_MERGE, reporter).collect(outputKmer, outputValue);
+
+                    while (values.hasNext()) {
+                        outputValue = values.next();
+                        tmpKmer.set(kmerFactory.getFirstKmerFromChain(KMER_SIZE - 1, key));
+                        if (outputValue.getKmerLength() != 0)
+                            outputKmer.set(kmerFactory.mergeTwoKmer(outputValue.getKmer(), tmpKmer));
+                        else
+                            outputKmer.set(tmpKmer);
+                        outputValue.set(outputValue.getAdjBitMap(), outputValue.getFlag(), null);
+                        mos.getCollector("complete" + I_MERGE, reporter).collect(outputKmer, outputValue);
+                    }
+                }
             }
         } else {
-            if (outputAdjList.getFlag() != 0) {
-                byte adjBitMap = outputAdjList.getAdjBitMap();
-                byte flag = outputAdjList.getFlag();
-                int kmerSize = outputAdjList.getKmerSize();
-                
+            if (outputValue.getFlag() != 0) {
                 tmpKmer.set(kmerFactory.getFirstKmerFromChain(KMER_SIZE - 1, key));
-                outputKmer.set(kmerFactory.mergeTwoKmer(outputAdjList.getKmer(), tmpKmer));
-                outputAdjList.set(null, 0, 0, adjBitMap, flag, KMER_SIZE + kmerSize);
-                mos.getCollector("complete" + I_MERGE, reporter).collect(outputKmer, outputAdjList);
+                if (outputValue.getKmerLength() != 0)
+                    outputKmer.set(kmerFactory.mergeTwoKmer(outputValue.getKmer(), tmpKmer));
+                else
+                    outputKmer.set(tmpKmer);
+                outputValue.set(outputValue.getAdjBitMap(), outputValue.getFlag(), null);
+                mos.getCollector("complete" + I_MERGE, reporter).collect(outputKmer, outputValue);
+
             } else
-                mos.getCollector("uncomplete" + I_MERGE, reporter).collect(key, outputAdjList);
+                mos.getCollector("uncomplete" + I_MERGE, reporter).collect(key, outputValue);
         }
     }
 
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathValueWritable.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathValueWritable.java
index c5ff116..9686c18 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathValueWritable.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/MergePathValueWritable.java
@@ -28,115 +28,53 @@
 public class MergePathValueWritable extends BinaryComparable implements WritableComparable<BinaryComparable> {
 
     private static final byte[] EMPTY_BYTES = {};
-    private int size;
-    private byte[] bytes;
-
     private byte adjBitMap;
     private byte flag;
-    private int kmerSize;
-    
     private VKmerBytesWritable kmer;
 
     public MergePathValueWritable() {
-        this((byte) 0, (byte) 0, (byte) 0, EMPTY_BYTES);
+        this((byte) 0, (byte) 0, 0, EMPTY_BYTES);
     }
 
-    public MergePathValueWritable(byte adjBitMap, byte flag, byte kmerSize, byte[] bytes) {
+    public MergePathValueWritable(byte adjBitMap, byte flag, int kmerSize, byte[] bytes) {
         this.adjBitMap = adjBitMap;
         this.flag = flag;
-        this.kmerSize = kmerSize;
-
-        this.bytes = bytes;
-        this.size = bytes.length;
-        this.kmer = new VKmerBytesWritable(kmerSize);
+        this.kmer = new VKmerBytesWritable(kmerSize, bytes);
         kmer.set(bytes, 0, bytes.length);
     }
 
-    public void setSize(int size) {
-        if (size > getCapacity()) {
-            setCapacity(size * 3 / 2);
-        }
-        this.size = size;
+    public void set(MergePathValueWritable right) {
+        set(right.getAdjBitMap(), right.getFlag(), right.getKmer());
     }
 
-    public int getCapacity() {
-        return bytes.length;
-    }
-
-    public void setCapacity(int new_cap) {
-        if (new_cap != getCapacity()) {
-            byte[] new_data = new byte[new_cap];
-            if (new_cap < size) {
-                size = new_cap;
-            }
-            if (size != 0) {
-                System.arraycopy(bytes, 0, new_data, 0, size);
-            }
-            bytes = new_data;
-        }
-    }
-
-    public void set(MergePathValueWritable newData) {
-        set(newData.bytes, 0, newData.size, newData.adjBitMap, newData.flag, newData.kmerSize);
-    }
-    
-    public void set(KmerBytesWritable mergedKmer, byte adjBitMap, byte bitFlag) {
-        set(mergedKmer.getBytes(),0,mergedKmer.getLength(), adjBitMap, bitFlag, mergedKmer.getKmerLength());
-    }
-
-    public void set(byte[] newData, int offset, int length, byte adjBitMap, byte flag, int kmerSize) {
-        setSize(0);        
-        if (length != 0) {
-            setSize(length);
-            System.arraycopy(newData, offset, bytes, 0, size);
-            kmer.set(kmerSize, newData, offset, length);
-        }
-            this.adjBitMap = adjBitMap;
-            this.flag = flag;
-            this.kmerSize = kmerSize;
-    }
-    
-    public KmerBytesWritable getKmer(){
-        if (size != 0){
-            return kmer;
-        }
-        return null;
+    public void set(byte adjBitMap, byte flag, VKmerBytesWritable kmer) {
+        this.kmer.set(kmer);
+        this.adjBitMap = adjBitMap;
+        this.flag = flag;
     }
 
     @Override
     public void readFields(DataInput arg0) throws IOException {
         // TODO Auto-generated method stub
-        setSize(0); // clear the old data
-        setSize(arg0.readInt());
-        if(size != 0){
-        arg0.readFully(bytes, 0, size);
-        kmer.set(bytes,0,size);
-        }
+        kmer.readFields(arg0);
         adjBitMap = arg0.readByte();
         flag = arg0.readByte();
-        kmerSize = arg0.readInt();
     }
 
     @Override
     public void write(DataOutput arg0) throws IOException {
         // TODO Auto-generated method stub
-        arg0.writeInt(size);
-        arg0.write(bytes, 0, size);
+
+        kmer.write(arg0);
         arg0.writeByte(adjBitMap);
         arg0.writeByte(flag);
-        arg0.writeInt(kmerSize);
     }
 
-    @Override
-    public byte[] getBytes() {
-        // TODO Auto-generated method stub
-        return bytes;
-    }
-
-    @Override
-    public int getLength() {
-        // TODO Auto-generated method stub
-        return size;
+    public VKmerBytesWritable getKmer() {
+        if (kmer.getLength() != 0) {
+            return kmer;
+        }
+        return null;
     }
 
     public byte getAdjBitMap() {
@@ -147,26 +85,26 @@
         return this.flag;
     }
 
-    public int getKmerSize() {
-        return this.kmerSize;
-    }
-
     public String toString() {
-        StringBuffer sb = new StringBuffer(3 * size);
-        for (int idx = 0; idx < size; idx++) {
-            // if not the first, put a blank separator in
-            if (idx != 0) {
-                sb.append(' ');
-            }
-            String num = Integer.toHexString(0xff & bytes[idx]);
-            // if it is only one digit, add a leading 0.
-            if (num.length() < 2) {
-                sb.append('0');
-            }
-            sb.append(num);
-        }
-        return GeneCode.getSymbolFromBitMap(adjBitMap) + '\t' + String.valueOf(flag) + '\t' + sb.toString();
+        return GeneCode.getSymbolFromBitMap(adjBitMap) + '\t' + String.valueOf(flag);
     }
 
- 
+    @Override
+    public byte[] getBytes() {
+        // TODO Auto-generated method stub
+        if (kmer.getLength() != 0) {
+            return kmer.getBytes();
+        } else
+            return null;
+
+    }
+
+    public int getKmerLength() {
+        return kmer.getKmerLength();
+    }
+
+    @Override
+    public int getLength() {
+        return kmer.getLength();
+    }
 }
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/SNodeInitialMapper.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/SNodeInitialMapper.java
index ae824e7..1058fda 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/SNodeInitialMapper.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/SNodeInitialMapper.java
@@ -22,8 +22,8 @@
 import org.apache.hadoop.mapred.Mapper;
 import org.apache.hadoop.mapred.OutputCollector;
 import org.apache.hadoop.mapred.Reporter;
-
 import edu.uci.ics.genomix.type.KmerBytesWritable;
+import edu.uci.ics.genomix.type.GeneCode;
 
 @SuppressWarnings("deprecation")
 public class SNodeInitialMapper extends MapReduceBase implements
@@ -97,43 +97,36 @@
     @Override
     public void map(KmerBytesWritable key, ByteWritable value,
             OutputCollector<KmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
-
         byte precursor = (byte) 0xF0;
         byte succeed = (byte) 0x0F;
         byte adjBitMap = value.get();
-        byte flag = (byte) 0;
+        byte bitFlag = (byte) 0;
         precursor = (byte) (precursor & adjBitMap);
         precursor = (byte) ((precursor & 0xff) >> 4);
         succeed = (byte) (succeed & adjBitMap);
         boolean inDegree = measureDegree(precursor);
         boolean outDegree = measureDegree(succeed);
-        byte initial = 0;
-        if (inDegree == true && outDegree == false) {
-            flag = (byte) 2;
-            switch (succeed) {
-                case 1:
-                    initial = (byte) 0x00;
-                    break;
-                case 2:
-                    initial = (byte) 0x01;
-                    break;
-                case 4:
-                    initial = (byte) 0x02;
-                    break;
-                case 8:
-                    initial = (byte) 0x03;
-                    break;
-            }
-            outputKmer.set(key);
-            outputKmer.shiftKmerWithNextCode(initial);
-            adjBitMap = (byte) (adjBitMap & 0xF0);
-            outputAdjList.set(null, 0, 0, adjBitMap, flag, KMER_SIZE);
-            output.collect(outputKmer, outputAdjList);
-        }
         if (inDegree == false && outDegree == false) {
             outputKmer.set(key);
-            outputAdjList.set(null, 0, 0, adjBitMap, flag, KMER_SIZE);
+            bitFlag = (byte) 2;
+            outputAdjList.set(adjBitMap, bitFlag, null);///~~~~~kmersize----->0
             output.collect(outputKmer, outputAdjList);
         }
+        else{
+            for(int i = 0 ; i < 4; i ++){
+                byte temp = 0x01;
+                byte shiftedCode = 0;
+                temp  = (byte)(temp << i);
+                temp = (byte) (succeed & temp);
+                if(temp != 0 ){
+                    byte succeedCode = GeneCode.getGeneCodeFromBitMap(temp);
+                    shiftedCode = key.shiftKmerWithNextCode(succeedCode);
+                    outputKmer.set(key);
+                    outputAdjList.set((byte)0, bitFlag, null);
+                    output.collect(outputKmer, outputAdjList);
+                    key.shiftKmerWithPreCode(shiftedCode);
+                }
+            }
+        }
     }
 }
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/SNodeInitialReducer.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/SNodeInitialReducer.java
index 734abd6..07cc32f 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/SNodeInitialReducer.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmerging/SNodeInitialReducer.java
@@ -16,50 +16,51 @@
 
 import java.io.IOException;
 import java.util.Iterator;
-
 import org.apache.hadoop.mapred.MapReduceBase;
 import org.apache.hadoop.mapred.OutputCollector;
 import org.apache.hadoop.mapred.Reducer;
 import org.apache.hadoop.mapred.Reporter;
-
 import edu.uci.ics.genomix.type.KmerBytesWritable;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
 
 @SuppressWarnings("deprecation")
 public class SNodeInitialReducer extends MapReduceBase implements
-        Reducer<KmerBytesWritable, MergePathValueWritable, KmerBytesWritable, MergePathValueWritable> {
-    private MergePathValueWritable outputAdjList = new MergePathValueWritable();
+        Reducer<KmerBytesWritable, MergePathValueWritable, VKmerBytesWritable, MergePathValueWritable> {
+    private VKmerBytesWritable outputKmer = new VKmerBytesWritable();
+    private MergePathValueWritable outputValue = new MergePathValueWritable();
+
 
     @Override
     public void reduce(KmerBytesWritable key, Iterator<MergePathValueWritable> values,
-            OutputCollector<KmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
-        outputAdjList = values.next();
+            OutputCollector<VKmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
+        outputKmer.set(key);
+        outputValue = values.next();
         if (values.hasNext() == true) {
-            if (outputAdjList.getFlag() != 2) {
-                byte adjBitMap = outputAdjList.getAdjBitMap();
-                int kmerSize = outputAdjList.getKmerSize();
+            if (outputValue.getFlag() == 2) {
                 byte bitFlag = 1;
-                outputAdjList.set(null, 0, 0, adjBitMap, bitFlag, kmerSize);
-                output.collect(key, outputAdjList);
-
+                outputValue.set(outputValue.getAdjBitMap(), bitFlag, null);///outputValue.getKmerLength()
+                output.collect(outputKmer, outputValue);
             } else {
                 boolean flag = false;
                 while (values.hasNext()) {
-                    outputAdjList = values.next();
-                    if (outputAdjList.getFlag() != 2) {
+                    outputValue = values.next();
+                    if (outputValue.getFlag() == 2) {
                         flag = true;
                         break;
                     }
                 }
                 if (flag == true) {
-                    byte adjBitMap = outputAdjList.getAdjBitMap();
-                    int kmerSize = outputAdjList.getKmerSize();
                     byte bitFlag = 1;
-                    outputAdjList.set(null, 0, 0, adjBitMap, bitFlag, kmerSize);
-                    output.collect(key, outputAdjList);
+                    outputValue.set(outputValue.getAdjBitMap(), bitFlag, null);
+                    output.collect(outputKmer, outputValue);
                 }
             }
         } else {
-            output.collect(key, outputAdjList);
+            if (outputValue.getFlag() == 2) {
+                byte bitFlag = 0;
+                outputValue.set(outputValue.getAdjBitMap(), bitFlag, null);
+                output.collect(outputKmer, outputValue);
+            }
         }
     }
 }
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/.DS_Store b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/.DS_Store
new file mode 100644
index 0000000..7c4ae29
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/ENodeInitialReducer.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/ENodeInitialReducer.java
new file mode 100644
index 0000000..1f9bc82
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/ENodeInitialReducer.java
@@ -0,0 +1,58 @@
+package edu.uci.ics.pathmergingh2;
+
+import java.io.IOException;
+import java.util.Iterator;
+import org.apache.hadoop.io.BytesWritable;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.MapReduceBase;
+import org.apache.hadoop.mapred.OutputCollector;
+import org.apache.hadoop.mapred.Reducer;
+import org.apache.hadoop.mapred.Reporter;
+import edu.uci.ics.genomix.type.KmerUtil;
+
+@SuppressWarnings("deprecation")
+public class ENodeInitialReducer extends MapReduceBase implements
+        Reducer<BytesWritable, MergePathValueWritable, BytesWritable, MergePathValueWritable> {
+    public BytesWritable outputKmer = new BytesWritable();
+    public MergePathValueWritable outputAdjList = new MergePathValueWritable();
+    
+    @Override
+    public void reduce(BytesWritable key, Iterator<MergePathValueWritable> values,
+            OutputCollector<BytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
+        outputAdjList = values.next();
+        outputKmer.set(key);
+        if (values.hasNext() == true) {
+            byte bitFlag = outputAdjList.getFlag();
+            bitFlag = (byte) (bitFlag & 0xFE);
+            if (bitFlag == 2) {
+                bitFlag =  (byte) (0x80 | outputAdjList.getFlag());
+                outputAdjList.set(outputAdjList.getAdjBitMap(), bitFlag, null);
+                output.collect(outputKmer, outputAdjList);
+
+            } else {
+                boolean flag = false;
+                while (values.hasNext()) {
+                    outputAdjList = values.next();
+                    if (outputAdjList.getFlag() == 2) {
+                        flag = true;
+                        break;
+                    }
+                }
+                if (flag == true) {
+                    bitFlag =  (byte) (0x80 | outputAdjList.getFlag());
+                    outputAdjList.set(outputAdjList.getAdjBitMap(), bitFlag, null);
+                    output.collect(outputKmer, outputAdjList);
+                }
+            }
+        } else {
+            byte bitFlag = outputAdjList.getFlag();
+            bitFlag = (byte) (bitFlag & 0xFE);
+            if (bitFlag == 2) {
+                bitFlag = 0;
+                outputAdjList.set(outputAdjList.getAdjBitMap(), bitFlag, null);
+                output.collect(outputKmer, outputAdjList);
+            } 
+        }
+    }
+}
+
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Driver.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Driver.java
new file mode 100644
index 0000000..58849e2
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Driver.java
@@ -0,0 +1,166 @@
+package edu.uci.ics.pathmergingh2;
+
+import java.io.IOException;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.mapred.FileInputFormat;
+import org.apache.hadoop.mapred.FileOutputFormat;
+import org.apache.hadoop.mapred.JobClient;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.SequenceFileInputFormat;
+import org.apache.hadoop.mapred.SequenceFileOutputFormat;
+import org.apache.hadoop.mapred.TextOutputFormat;
+import org.apache.hadoop.mapred.lib.MultipleOutputs;
+import org.apache.hadoop.mapred.lib.MultipleSequenceFileOutputFormat;
+import org.apache.hadoop.mapred.lib.MultipleTextOutputFormat;
+import org.kohsuke.args4j.CmdLineParser;
+import org.kohsuke.args4j.Option;
+import edu.uci.ics.genomix.type.KmerBytesWritable;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
+
+
+@SuppressWarnings("deprecation")
+public class MergePathH2Driver {
+    
+    private static class Options {
+        @Option(name = "-inputpath", usage = "the input path", required = true)
+        public String inputPath;
+
+        @Option(name = "-outputpath", usage = "the output path", required = true)
+        public String outputPath;
+
+        @Option(name = "-mergeresultpath", usage = "the merging results path", required = true)
+        public String mergeResultPath;
+        
+        @Option(name = "-num-reducers", usage = "the number of reducers", required = true)
+        public int numReducers;
+
+        @Option(name = "-kmer-size", usage = "the size of kmer", required = true)
+        public int sizeKmer;
+        
+        @Option(name = "-merge-rounds", usage = "the while rounds of merging", required = true)
+        public int mergeRound;
+
+    }
+
+
+    public void run(String inputPath, String outputPath, String mergeResultPath, int numReducers, int sizeKmer, int mergeRound, String defaultConfPath)
+            throws IOException{
+
+        JobConf conf = new JobConf(MergePathH2Driver.class);
+        conf.setInt("sizeKmer", sizeKmer);
+        
+        if (defaultConfPath != null) {
+            conf.addResource(new Path(defaultConfPath));
+        }
+        conf.setJobName("Initial Path-Starting-Points Table");
+        conf.setMapperClass(SNodeInitialMapper.class); 
+        conf.setReducerClass(SNodeInitialReducer.class);
+
+        conf.setMapOutputKeyClass(KmerBytesWritable.class);
+        conf.setMapOutputValueClass(MergePathValueWritable.class);
+        
+        conf.setInputFormat(SequenceFileInputFormat.class);
+        conf.setOutputFormat(SequenceFileOutputFormat.class);
+        
+        conf.setOutputKeyClass(VKmerBytesWritable.class);
+        conf.setOutputValueClass(MergePathValueWritable.class);
+        
+        FileInputFormat.setInputPaths(conf, new Path(inputPath));
+        FileOutputFormat.setOutputPath(conf, new Path(inputPath + "-step1"));
+        conf.setNumReduceTasks(numReducers);
+        FileSystem dfs = FileSystem.get(conf);
+        dfs.delete(new Path(inputPath + "-step1"), true);
+        JobClient.runJob(conf);
+        int iMerge = 0;
+/*----------------------------------------------------------------------*/
+        for(iMerge = 0; iMerge < mergeRound; iMerge ++){
+            conf = new JobConf(MergePathH2Driver.class);
+            conf.setInt("sizeKmer", sizeKmer);
+            conf.setInt("iMerge", iMerge);
+            
+            if (defaultConfPath != null) {
+                conf.addResource(new Path(defaultConfPath));
+            }
+            conf.setJobName("Path Merge");
+            
+            conf.setMapperClass(MergePathH2Mapper.class);
+            conf.setReducerClass(MergePathH2Reducer.class);
+            
+            conf.setMapOutputKeyClass(VKmerBytesWritable.class);
+            conf.setMapOutputValueClass(MergePathValueWritable.class);
+            
+            conf.setInputFormat(SequenceFileInputFormat.class);
+            
+            String uncomplete = "uncomplete" + iMerge;
+            String complete = "complete" + iMerge;
+           
+            MultipleOutputs.addNamedOutput(conf, uncomplete,
+                    MergePathMultiSeqOutputFormat.class, VKmerBytesWritable.class,
+                    MergePathValueWritable.class);
+
+            MultipleOutputs.addNamedOutput(conf, complete,
+                    MergePathMultiTextOutputFormat.class, VKmerBytesWritable.class,
+                    MergePathValueWritable.class);
+            
+            conf.setOutputKeyClass(VKmerBytesWritable.class);
+            conf.setOutputValueClass(MergePathValueWritable.class);
+            
+            FileInputFormat.setInputPaths(conf, new Path(inputPath + "-step1"));
+            FileOutputFormat.setOutputPath(conf, new Path(outputPath));
+            conf.setNumReduceTasks(numReducers);
+            dfs.delete(new Path(outputPath), true);
+            JobClient.runJob(conf);
+            dfs.delete(new Path(inputPath + "-step1"), true);
+            dfs.rename(new Path(outputPath + "/" + uncomplete), new Path(inputPath + "-step1"));
+            dfs.rename(new Path(outputPath + "/" + complete), new Path(mergeResultPath + "/" + complete));
+        }
+        conf = new JobConf(MergePathH2Driver.class);
+        conf.setInt("sizeKmer", sizeKmer);
+        conf.setInt("iMerge", iMerge);
+        
+        if (defaultConfPath != null) {
+            conf.addResource(new Path(defaultConfPath));
+        }
+        conf.setJobName("Path Merge");
+        
+        conf.setMapperClass(MergePathH2Mapper.class);
+        conf.setReducerClass(MergePathH2Reducer.class);
+        
+        conf.setMapOutputKeyClass(VKmerBytesWritable.class);
+        conf.setMapOutputValueClass(MergePathValueWritable.class);
+        
+        conf.setInputFormat(SequenceFileInputFormat.class);
+        
+        String uncomplete = "uncomplete" + iMerge;
+        String complete = "complete" + iMerge;
+       
+        MultipleOutputs.addNamedOutput(conf, uncomplete,
+                MergePathMultiTextOutputFormat.class, VKmerBytesWritable.class,
+                MergePathValueWritable.class);
+
+        MultipleOutputs.addNamedOutput(conf, complete,
+                MergePathMultiTextOutputFormat.class, VKmerBytesWritable.class,
+                MergePathValueWritable.class);
+        
+        conf.setOutputKeyClass(VKmerBytesWritable.class);
+        conf.setOutputValueClass(MergePathValueWritable.class);
+        
+        FileInputFormat.setInputPaths(conf, new Path(inputPath + "-step1"));
+        FileOutputFormat.setOutputPath(conf, new Path(outputPath));
+        conf.setNumReduceTasks(numReducers);
+        dfs.delete(new Path(outputPath), true);
+        JobClient.runJob(conf);
+        dfs.delete(new Path(inputPath + "-step1"), true);
+        dfs.rename(new Path(outputPath + "/" + uncomplete), new Path(inputPath + "-step1"));
+        dfs.rename(new Path(outputPath + "/" + complete), new Path(mergeResultPath + "/" + complete));
+    }
+
+    public static void main(String[] args) throws Exception {
+        Options options = new Options();
+        CmdLineParser parser = new CmdLineParser(options);
+        parser.parseArgument(args);
+        MergePathH2Driver driver = new MergePathH2Driver();
+        driver.run(options.inputPath, options.outputPath, options.mergeResultPath, options.numReducers, options.sizeKmer, options.mergeRound, null);
+    }
+}
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Mapper.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Mapper.java
new file mode 100644
index 0000000..6ea9dd3
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Mapper.java
@@ -0,0 +1,87 @@
+package edu.uci.ics.pathmergingh2;
+
+import java.io.IOException;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.MapReduceBase;
+import org.apache.hadoop.mapred.Mapper;
+import org.apache.hadoop.mapred.OutputCollector;
+import org.apache.hadoop.mapred.Reporter;
+import edu.uci.ics.genomix.type.GeneCode;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
+import edu.uci.ics.genomix.type.VKmerBytesWritableFactory;
+
+@SuppressWarnings("deprecation")
+public class MergePathH2Mapper extends MapReduceBase implements
+        Mapper<VKmerBytesWritable, MergePathValueWritable, VKmerBytesWritable, MergePathValueWritable> {
+
+    private int KMER_SIZE;
+    private VKmerBytesWritableFactory outputKmerFactory;
+    private MergePathValueWritable outputValue;
+    private VKmerBytesWritable tmpKmer;
+    private VKmerBytesWritable outputKmer;
+
+    public void configure(JobConf job) {
+        KMER_SIZE = job.getInt("sizeKmer", 0);
+        outputKmerFactory = new VKmerBytesWritableFactory(KMER_SIZE);
+        outputValue = new MergePathValueWritable();
+        tmpKmer = new VKmerBytesWritable(KMER_SIZE);
+        outputKmer = new VKmerBytesWritable(KMER_SIZE);
+    }
+
+    @Override
+    public void map(VKmerBytesWritable key, MergePathValueWritable value,
+            OutputCollector<VKmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
+        byte precursor = (byte) 0xF0;
+        byte succeed = (byte) 0x0F;
+        byte adjBitMap = value.getAdjBitMap();
+        byte bitFlag = value.getFlag();
+        precursor = (byte) (precursor & adjBitMap);
+        precursor = (byte) ((precursor & 0xff) >> 4);
+        succeed = (byte) (succeed & adjBitMap);
+        byte bitStartEnd = (byte) (0x81 & bitFlag);
+
+        switch (bitStartEnd) {
+            case (byte) 0x01:
+                byte succeedCode = GeneCode.getGeneCodeFromBitMap(succeed);
+                tmpKmer.set(outputKmerFactory.getLastKmerFromChain(KMER_SIZE, key));
+                outputKmer.set(outputKmerFactory.shiftKmerWithNextCode(tmpKmer, succeedCode));
+
+                tmpKmer.set(outputKmerFactory.getFirstKmerFromChain(key.getKmerLength() - (KMER_SIZE - 1), key));
+                bitFlag = (byte) (bitFlag | 0x08);
+                outputValue.set(adjBitMap, bitFlag, tmpKmer);
+                output.collect(outputKmer, outputValue);
+                break;
+            case (byte) 0x80:
+                tmpKmer.set(outputKmerFactory.getFirstKmerFromChain(KMER_SIZE, key));
+                outputKmer.set(tmpKmer);
+                tmpKmer.set(outputKmerFactory.getLastKmerFromChain(key.getKmerLength() - KMER_SIZE, key));
+                bitFlag = (byte) (bitFlag | 0x10);
+                outputValue.set(adjBitMap, bitFlag, tmpKmer);
+                output.collect(outputKmer, outputValue);
+                break;
+            case (byte) 0x00:
+                succeedCode = GeneCode.getGeneCodeFromBitMap(succeed);
+                tmpKmer.set(outputKmerFactory.getLastKmerFromChain(KMER_SIZE, key));
+                outputKmer.set(outputKmerFactory.shiftKmerWithNextCode(tmpKmer, succeedCode));
+
+                tmpKmer.set(outputKmerFactory.getFirstKmerFromChain(key.getKmerLength() - (KMER_SIZE - 1), key));
+                bitFlag = (byte) (bitFlag | 0x08);
+                outputValue.set(adjBitMap, bitFlag, tmpKmer);
+                output.collect(outputKmer, outputValue);
+
+                bitFlag = (byte) (bitFlag & 0xF7);
+                tmpKmer.set(outputKmerFactory.getFirstKmerFromChain(KMER_SIZE, key));
+                outputKmer.set(tmpKmer);
+                tmpKmer.set(outputKmerFactory.getLastKmerFromChain(key.getKmerLength() - KMER_SIZE, key));
+                bitFlag = (byte) (bitFlag | 0x10);
+                outputValue.set(adjBitMap, bitFlag, tmpKmer);
+                output.collect(outputKmer, outputValue);
+                break;
+            case (byte) 0x81:
+                outputKmer.set(key);
+                outputValue.set(adjBitMap, bitFlag, null);
+                output.collect(outputKmer, outputValue);
+                break;
+        }
+    }
+}
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Reducer.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Reducer.java
new file mode 100644
index 0000000..ad8b3c2
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathH2Reducer.java
@@ -0,0 +1,119 @@
+package edu.uci.ics.pathmergingh2;
+
+import java.io.IOException;
+import java.util.Iterator;
+
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.MapReduceBase;
+import org.apache.hadoop.mapred.OutputCollector;
+import org.apache.hadoop.mapred.Reducer;
+import org.apache.hadoop.mapred.Reporter;
+import org.apache.hadoop.mapred.lib.MultipleOutputs;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
+import edu.uci.ics.genomix.type.VKmerBytesWritableFactory;
+
+@SuppressWarnings("deprecation")
+public class MergePathH2Reducer extends MapReduceBase implements
+        Reducer<VKmerBytesWritable, MergePathValueWritable, VKmerBytesWritable, MergePathValueWritable> {
+    private VKmerBytesWritableFactory kmerFactory;
+    private VKmerBytesWritable outputKmer;
+    private VKmerBytesWritable tmpKmer1;
+    private VKmerBytesWritable tmpKmer2;
+    private int KMER_SIZE;
+    private MergePathValueWritable outputValue;
+    private MergePathValueWritable tmpOutputValue;
+
+    MultipleOutputs mos = null;
+    private int I_MERGE;
+
+    public void configure(JobConf job) {
+        mos = new MultipleOutputs(job);
+        I_MERGE = Integer.parseInt(job.get("iMerge"));
+        KMER_SIZE = job.getInt("sizeKmer", 0);
+        outputValue = new MergePathValueWritable();
+        tmpOutputValue = new MergePathValueWritable();
+        kmerFactory = new VKmerBytesWritableFactory(KMER_SIZE);
+        outputKmer = new VKmerBytesWritable(KMER_SIZE);
+        tmpKmer1 = new VKmerBytesWritable(KMER_SIZE);
+        tmpKmer2 = new VKmerBytesWritable(KMER_SIZE);
+    }
+
+    @SuppressWarnings("unchecked")
+    public void reduce(VKmerBytesWritable key, Iterator<MergePathValueWritable> values,
+            OutputCollector<VKmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
+        outputValue = values.next();
+        outputKmer.set(key);
+        if (values.hasNext() == true) {
+            byte bitFlag = outputValue.getFlag();
+            byte bitStartEnd = (byte) (0x81 & bitFlag);
+            byte bitPosiNegative = (byte) (0x18 & bitFlag);
+            byte succeed = (byte) 0x0F;
+            switch (bitPosiNegative) {
+                case (byte) 0x08:
+                    if (outputValue.getKmerLength() != 0)
+                        tmpKmer1.set(kmerFactory.mergeTwoKmer(outputValue.getKmer(), key));
+                    else
+                        tmpKmer1.set(key);
+                    byte adjBitMap = outputValue.getAdjBitMap();
+                    outputValue = values.next();
+                    bitStartEnd = (byte) (0x81 & outputValue.getFlag());
+                    if (bitStartEnd == (byte) 0x80) {
+                        if (outputValue.getKmerLength() != 0)
+                            tmpKmer2.set(kmerFactory.mergeTwoKmer(key, outputValue.getKmer()));
+                        else
+                            tmpKmer2.set(key);
+                        byte tmpFlag = (byte) 0x80;
+                        tmpOutputValue.set(outputValue.getAdjBitMap(), outputValue.getFlag(), null);
+                        mos.getCollector("uncomplete" + I_MERGE, reporter).collect(tmpKmer2, tmpOutputValue);
+                    }
+                    if (outputValue.getKmerLength() != 0)
+                        outputKmer.set(kmerFactory.mergeTwoKmer(tmpKmer1, outputValue.getKmer()));
+                    else
+                        outputKmer.set(tmpKmer1);
+                    succeed = (byte) (succeed & outputValue.getAdjBitMap());
+                    adjBitMap = (byte) (adjBitMap & 0xF0);
+                    adjBitMap = (byte) (adjBitMap | succeed);
+                    byte outputFlag = (byte) (0x81 & bitFlag);
+                    outputFlag = (byte) (outputFlag | ((byte) 0x81 & outputValue.getFlag()));
+                    outputValue.set(adjBitMap, outputFlag, null);
+                    mos.getCollector("uncomplete" + I_MERGE, reporter).collect(outputKmer, outputValue);
+                    break;
+                case (byte) 0x10:
+                    if (outputValue.getKmerLength() != 0)
+                        tmpKmer1.set(kmerFactory.mergeTwoKmer(key, outputValue.getKmer()));
+                    else
+                        tmpKmer1.set(key);
+                    if (bitStartEnd == (byte) 0x80) {
+                        byte tmpFlag = (byte) 0x80;
+                        tmpOutputValue.set(outputValue.getAdjBitMap(), tmpFlag, null);
+                        mos.getCollector("uncomplete" + I_MERGE, reporter).collect(tmpKmer1, tmpOutputValue);
+                    }
+                    succeed = (byte) (succeed & outputValue.getAdjBitMap());
+                    outputValue = values.next();
+                    if (outputValue.getKmerLength() != 0)
+                        outputKmer.set(kmerFactory.mergeTwoKmer(outputValue.getKmer(), tmpKmer1));
+                    else
+                        outputKmer.set(tmpKmer1);
+                    adjBitMap = outputValue.getAdjBitMap();
+                    adjBitMap = (byte) (adjBitMap & 0xF0);
+                    adjBitMap = (byte) (adjBitMap | succeed);                    
+                    outputFlag = (byte) (0x81 & bitFlag);
+                    outputFlag = (byte) (outputFlag | ((byte) 0x81 & outputValue.getFlag()));
+                    outputValue.set(adjBitMap, outputFlag, null);
+                    mos.getCollector("uncomplete" + I_MERGE, reporter).collect(outputKmer, outputValue);
+                    break;
+            }
+        } else {
+            byte bitFlag = outputValue.getFlag();
+            byte bitStartEnd = (byte) (0x81 & bitFlag);
+            if (bitStartEnd == (byte) 0x81) {
+                outputKmer.set(key);
+                mos.getCollector("complete" + I_MERGE, reporter).collect(outputKmer, outputValue);
+            }
+        }
+    }
+    public void close() throws IOException {
+        // TODO Auto-generated method stub
+        mos.close();
+    }
+}
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathMultiSeqOutputFormat.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathMultiSeqOutputFormat.java
new file mode 100644
index 0000000..5e6f008
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathMultiSeqOutputFormat.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2009-2012 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.pathmergingh2;
+
+import java.io.File;
+import org.apache.hadoop.io.BytesWritable;
+import org.apache.hadoop.mapred.lib.MultipleSequenceFileOutputFormat;
+
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
+
+
+public class MergePathMultiSeqOutputFormat extends MultipleSequenceFileOutputFormat<VKmerBytesWritable, MergePathValueWritable>{
+    @Override
+    protected String generateLeafFileName(String name) {
+        // TODO Auto-generated method stub System.out.println(name); 
+        String[] names = name.split("-");
+        return names[0] + File.separator + name;
+    }
+}
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathMultiTextOutputFormat.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathMultiTextOutputFormat.java
new file mode 100644
index 0000000..d6176e2
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathMultiTextOutputFormat.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2009-2012 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.pathmergingh2;
+
+import java.io.File;
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.mapred.lib.MultipleTextOutputFormat;
+
+public class MergePathMultiTextOutputFormat extends MultipleTextOutputFormat<Text, Text>{
+    @Override
+    protected String generateLeafFileName(String name) {
+        // TODO Auto-generated method stub System.out.println(name); 
+        String[] names = name.split("-");
+        return names[0] + File.separator + name;
+    }
+}
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathValueWritable.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathValueWritable.java
new file mode 100644
index 0000000..2f1869d
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/MergePathValueWritable.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2009-2012 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.pathmergingh2;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+
+import org.apache.hadoop.io.BinaryComparable;
+import org.apache.hadoop.io.WritableComparable;
+
+import edu.uci.ics.genomix.type.GeneCode;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
+
+public class MergePathValueWritable extends BinaryComparable implements WritableComparable<BinaryComparable> {
+
+    private static final byte[] EMPTY_BYTES = {};
+    private byte adjBitMap;
+    private byte flag;
+    private VKmerBytesWritable kmer;
+
+    public MergePathValueWritable() {
+        this((byte) 0, (byte) 0, 0, EMPTY_BYTES);
+    }
+    
+    public MergePathValueWritable(int k) {
+        this.adjBitMap = 0;
+        this.flag = 0;
+        this.kmer = new VKmerBytesWritable(k);
+    }
+    
+    public MergePathValueWritable(byte adjBitMap, byte flag, int kmerSize, byte[] bytes) {
+        this.adjBitMap = adjBitMap;
+        this.flag = flag;
+        this.kmer = new VKmerBytesWritable(kmerSize, bytes);
+        kmer.set(bytes, 0, bytes.length);
+    }
+
+    public void set(MergePathValueWritable right) {
+        set(right.getAdjBitMap(), right.getFlag(), right.getKmer());
+    }
+
+    public void set(byte adjBitMap, byte flag, VKmerBytesWritable kmer) {
+        this.kmer.set(kmer);
+        this.adjBitMap = adjBitMap;
+        this.flag = flag;
+    }
+
+    @Override
+    public void readFields(DataInput arg0) throws IOException {
+        // TODO Auto-generated method stub
+        kmer.readFields(arg0);
+        adjBitMap = arg0.readByte();
+        flag = arg0.readByte();
+    }
+
+    @Override
+    public void write(DataOutput arg0) throws IOException {
+        // TODO Auto-generated method stub
+
+        kmer.write(arg0);
+        arg0.writeByte(adjBitMap);
+        arg0.writeByte(flag);
+    }
+
+    public VKmerBytesWritable getKmer() {
+        if (kmer.getLength() != 0) {
+            return kmer;
+        }
+        return null;
+    }
+
+    public byte getAdjBitMap() {
+        return this.adjBitMap;
+    }
+
+    public byte getFlag() {
+        return this.flag;
+    }
+
+    public String toString() {
+        return GeneCode.getSymbolFromBitMap(adjBitMap) + '\t' + String.valueOf(flag);
+    }
+
+    @Override
+    public byte[] getBytes() {
+        // TODO Auto-generated method stub
+        if (kmer.getLength() != 0) {
+            return kmer.getBytes();
+        } else
+            return null;
+
+    }
+
+    public int getKmerLength() {
+        return kmer.getKmerLength();
+    }
+
+    @Override
+    public int getLength() {
+        return kmer.getLength();
+    }
+}
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/SNodeInitialMapper.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/SNodeInitialMapper.java
new file mode 100644
index 0000000..4c05dac
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/SNodeInitialMapper.java
@@ -0,0 +1,141 @@
+package edu.uci.ics.pathmergingh2;
+
+import java.io.IOException;
+import org.apache.hadoop.io.ByteWritable;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.MapReduceBase;
+import org.apache.hadoop.mapred.Mapper;
+import org.apache.hadoop.mapred.OutputCollector;
+import org.apache.hadoop.mapred.Reporter;
+import edu.uci.ics.genomix.type.GeneCode;
+import edu.uci.ics.genomix.type.KmerBytesWritable;
+
+@SuppressWarnings("deprecation")
+public class SNodeInitialMapper extends MapReduceBase implements
+        Mapper<KmerBytesWritable, ByteWritable, KmerBytesWritable, MergePathValueWritable> {
+
+    public int KMER_SIZE;
+    public KmerBytesWritable outputKmer;
+    public MergePathValueWritable outputAdjList;
+
+    public void configure(JobConf job) {
+        KMER_SIZE = Integer.parseInt(job.get("sizeKmer"));
+        outputKmer = new KmerBytesWritable(KMER_SIZE);
+        outputAdjList = new MergePathValueWritable();
+    }
+
+    boolean measureDegree(byte adjacent) {
+        boolean result = true;
+        switch (adjacent) {
+            case 0:
+                result = true;
+                break;
+            case 1:
+                result = false;
+                break;
+            case 2:
+                result = false;
+                break;
+            case 3:
+                result = true;
+                break;
+            case 4:
+                result = false;
+                break;
+            case 5:
+                result = true;
+                break;
+            case 6:
+                result = true;
+                break;
+            case 7:
+                result = true;
+                break;
+            case 8:
+                result = false;
+                break;
+            case 9:
+                result = true;
+                break;
+            case 10:
+                result = true;
+                break;
+            case 11:
+                result = true;
+                break;
+            case 12:
+                result = true;
+                break;
+            case 13:
+                result = true;
+                break;
+            case 14:
+                result = true;
+                break;
+            case 15:
+                result = true;
+                break;
+        }
+        return result;
+    }
+
+    @Override
+    public void map(KmerBytesWritable key, ByteWritable value,
+            OutputCollector<KmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
+        byte precursor = (byte) 0xF0;
+        byte succeed = (byte) 0x0F;
+        byte adjBitMap = value.get();
+        byte bitFlag = (byte) 0;
+        precursor = (byte) (precursor & adjBitMap);
+        precursor = (byte) ((precursor & 0xff) >> 4);
+        succeed = (byte) (succeed & adjBitMap);
+        boolean inDegree = measureDegree(precursor);
+        boolean outDegree = measureDegree(succeed);
+        if (key.toString().equals("CGC")) {
+            int a = 2;
+            int b = a;
+        }
+        if (key.toString().equals("TCG")) {
+            int a = 2;
+            int b = a;
+        }
+        if (inDegree == false && outDegree == false) {
+            outputKmer.set(key);
+            System.out.println(outputKmer.hashCode());
+            bitFlag = (byte) 2;
+            outputAdjList.set(adjBitMap, bitFlag, null);
+            output.collect(outputKmer, outputAdjList);
+        } else {
+            for (int i = 0; i < 4; i++) {
+                byte temp = (byte) 0x01;
+                byte shiftedCode = 0;
+                temp = (byte) (temp << i);
+                temp = (byte) (precursor & temp);
+                if (temp != 0) {
+                    byte precurCode = GeneCode.getGeneCodeFromBitMap(temp);
+                    shiftedCode = key.shiftKmerWithPreCode(precurCode);
+                    outputKmer.set(key);
+                    bitFlag = (byte) 0x80;
+                    outputAdjList.set((byte) 0, bitFlag, null);
+                    output.collect(outputKmer, outputAdjList);
+                    key.shiftKmerWithNextCode(shiftedCode);
+                }
+            }
+            for (int i = 0; i < 4; i++) {
+                byte temp = (byte) 0x01;
+                byte shiftedCode = 0;
+                temp = (byte) (temp << i);
+                temp = (byte) (succeed & temp);
+                if (temp != 0) {
+                    byte succeedCode = GeneCode.getGeneCodeFromBitMap(temp);
+                    shiftedCode = key.shiftKmerWithNextCode(succeedCode);
+                    outputKmer.set(key);
+                    bitFlag = (byte) 0x01;
+                    outputAdjList.set((byte) 0, bitFlag, null);
+                    output.collect(outputKmer, outputAdjList);
+                    key.shiftKmerWithPreCode(shiftedCode);
+                }
+            }
+        }
+    }
+}
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/SNodeInitialReducer.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/SNodeInitialReducer.java
new file mode 100644
index 0000000..7fd7a2e
--- /dev/null
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/pathmergingh2/SNodeInitialReducer.java
@@ -0,0 +1,80 @@
+package edu.uci.ics.pathmergingh2;
+
+import java.io.IOException;
+import java.util.Iterator;
+import org.apache.hadoop.mapred.MapReduceBase;
+import org.apache.hadoop.mapred.OutputCollector;
+import org.apache.hadoop.mapred.Reducer;
+import org.apache.hadoop.mapred.Reporter;
+import edu.uci.ics.genomix.type.KmerBytesWritable;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
+
+@SuppressWarnings("deprecation")
+public class SNodeInitialReducer extends MapReduceBase implements
+        Reducer<KmerBytesWritable, MergePathValueWritable, VKmerBytesWritable, MergePathValueWritable> {
+    private VKmerBytesWritable outputKmer = new VKmerBytesWritable();
+    private MergePathValueWritable outputValue = new MergePathValueWritable();
+
+    @Override
+    public void reduce(KmerBytesWritable key, Iterator<MergePathValueWritable> values,
+            OutputCollector<VKmerBytesWritable, MergePathValueWritable> output, Reporter reporter) throws IOException {
+        outputKmer.set(key);
+        outputValue = values.next();
+        byte startFlag = 0x00;
+        byte endFlag = 0x00;
+        byte targetPointFlag = 0x00;
+        byte targetAdjList = 0x00;
+        byte outputFlag = 0x00;
+        if(key.toString().equals("TCG")){
+            int a = 2;
+            int b = a;
+        }
+        if (values.hasNext() == true) {
+            switch (outputValue.getFlag()) {
+                case (byte) 0x01:
+                    startFlag = (byte) 0x01;
+                    break;
+                case (byte) 0x80:
+                    endFlag = (byte) 0x80;
+                    break;
+                case (byte) 0x02:
+                    targetPointFlag = (byte) 0x02;
+                    targetAdjList = outputValue.getAdjBitMap();
+                    break;
+            }
+            while (values.hasNext()) {
+                outputValue = values.next();
+                switch (outputValue.getFlag()) {
+                    case (byte) 0x01:
+                        startFlag = (byte) 0x01;
+                        break;
+                    case (byte) 0x80:
+                        endFlag = (byte) 0x80;
+                        break;
+                    case (byte) 0x02:
+                        targetPointFlag = (byte) 0x02;
+                        targetAdjList = outputValue.getAdjBitMap();
+                        break;
+                }
+                if(startFlag != (byte) 0x00 && endFlag!= (byte) 0x00 && targetPointFlag != (byte) 0x00)
+                    break;
+            }
+            if(targetPointFlag == (byte) 0x02) {
+                if(startFlag == (byte) 0x01) {
+                    outputFlag = (byte) (outputFlag | startFlag);
+                }
+                if(endFlag == (byte) 0x80) {
+                    outputFlag = (byte) (outputFlag | endFlag);
+                }
+                outputValue.set(targetAdjList, outputFlag, null);
+                output.collect(outputKmer, outputValue);
+            }
+        } else {
+            if (outputValue.getFlag() == 2) {
+                byte bitFlag = 0;
+                outputValue.set(outputValue.getAdjBitMap(), bitFlag, null);
+                output.collect(outputKmer, outputValue);
+            }
+        }
+    }
+}
diff --git a/genomix/genomix-hadoop/src/test/.DS_Store b/genomix/genomix-hadoop/src/test/.DS_Store
new file mode 100644
index 0000000..bfe14e8
--- /dev/null
+++ b/genomix/genomix-hadoop/src/test/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/test/java/.DS_Store b/genomix/genomix-hadoop/src/test/java/.DS_Store
new file mode 100644
index 0000000..fb3684c
--- /dev/null
+++ b/genomix/genomix-hadoop/src/test/java/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/test/java/edu/.DS_Store b/genomix/genomix-hadoop/src/test/java/edu/.DS_Store
new file mode 100644
index 0000000..f50e64b
--- /dev/null
+++ b/genomix/genomix-hadoop/src/test/java/edu/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/test/java/edu/uci/.DS_Store b/genomix/genomix-hadoop/src/test/java/edu/uci/.DS_Store
new file mode 100644
index 0000000..9aea623
--- /dev/null
+++ b/genomix/genomix-hadoop/src/test/java/edu/uci/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/.DS_Store b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/.DS_Store
new file mode 100644
index 0000000..64f18c4
--- /dev/null
+++ b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/.DS_Store
Binary files differ
diff --git a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/graphbuilding/GraphBuildingTest.java b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/graphbuilding/GraphBuildingTest.java
index 44af11b..97b861c 100755
--- a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/graphbuilding/GraphBuildingTest.java
+++ b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/graphbuilding/GraphBuildingTest.java
@@ -32,6 +32,7 @@
 import org.apache.hadoop.util.ReflectionUtils;
 import org.junit.Test;
 
+import edu.uci.ics.genomix.type.GeneCode;
 import edu.uci.ics.genomix.type.KmerBytesWritable;
 import edu.uci.ics.genomix.type.KmerCountValue;
 import edu.uci.ics.utils.TestUtils;
@@ -45,13 +46,14 @@
     private static final String COMPARE_DIR = "compare";
     private JobConf conf = new JobConf();
     private static final String HADOOP_CONF_PATH = ACTUAL_RESULT_DIR + File.separator + "conf.xml";
-    private static final String DATA_PATH = "data/webmap/Test.txt";
+    private static final String DATA_PATH = "data/webmap/BridgePath";
     private static final String HDFS_PATH = "/webmap";
     private static final String RESULT_PATH = "/result1";
     private static final String EXPECTED_PATH = "expected/result1";
     private static final String TEST_SOURCE_DIR = COMPARE_DIR + RESULT_PATH + "/comparesource.txt";
     private static final int COUNT_REDUCER = 4;
-    private static final int SIZE_KMER = 3;
+    private static final int SIZE_KMER = 5;
+    private static final String GRAPHVIZ = "Graphviz/GenomixSource.txt";
     
     private MiniDFSCluster dfsCluster;
     private MiniMRCluster mrCluster;
@@ -76,15 +78,35 @@
         KmerCountValue value = (KmerCountValue) ReflectionUtils.newInstance(reader.getValueClass(), conf);
         File filePathTo = new File(TEST_SOURCE_DIR);
         BufferedWriter bw = new BufferedWriter(new FileWriter(filePathTo));
+        File GraphViz = new File(GRAPHVIZ);
+        BufferedWriter bw2 = new BufferedWriter(new FileWriter(GraphViz));
         
         while (reader.next(key, value)) {
+            byte succeed = (byte) 0x0F;
+            byte adjBitMap = value.getAdjBitMap();
+            succeed = (byte) (succeed & adjBitMap);
+            byte shiftedCode = 0;
+            for(int i = 0 ; i < 4; i ++){
+                byte temp = 0x01;
+                temp  = (byte)(temp << i);
+                temp = (byte) (succeed & temp);
+                if(temp != 0 ){
+                    bw2.write(key.toString());
+                    bw2.newLine();                    
+                    byte succeedCode = GeneCode.getGeneCodeFromBitMap(temp);
+                    shiftedCode = key.shiftKmerWithNextCode(succeedCode);
+                    bw2.write(key.toString());
+                    bw2.newLine();
+                    key.shiftKmerWithPreCode(shiftedCode);
+                }
+            }
             bw.write(key.toString() + "\t" + value.toString());
-            bw.newLine();
+            bw.newLine();            
         }
         bw.close();
 
         dumpResult();
-        TestUtils.compareWithResult(new File(TEST_SOURCE_DIR), new File(EXPECTED_PATH));
+//        TestUtils.compareWithResult(new File(TEST_SOURCE_DIR), new File(EXPECTED_PATH));
 
         cleanupHadoop();
 
diff --git a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/pathmerging/MergePathTest.java b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/pathmerging/MergePathTest.java
index 95a9785..5e6e51e 100644
--- a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/pathmerging/MergePathTest.java
+++ b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/pathmerging/MergePathTest.java
@@ -18,6 +18,7 @@
 import org.junit.Test;
 
 import edu.uci.ics.genomix.type.KmerBytesWritable;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
 import edu.uci.ics.utils.TestUtils;
 
 @SuppressWarnings("deprecation")
@@ -33,7 +34,7 @@
     private static final String RESULT_PATH = "/result3";
     private static final String EXPECTED_PATH = "expected/result3";
     private static final String TEST_SOURCE_DIR = COMPARE_DIR + RESULT_PATH + "/comparesource.txt";
-    private static final int COUNT_REDUCER = 4;
+    private static final int COUNT_REDUCER = 1;
     private static final int SIZE_KMER = 3;
 
     private MiniDFSCluster dfsCluster;
@@ -48,12 +49,13 @@
         startHadoop();
 
         MergePathDriver tldriver = new MergePathDriver();
-        tldriver.run(HDFS_PATH, RESULT_PATH, HDFA_PATH_DATA, COUNT_REDUCER, SIZE_KMER, 3, HADOOP_CONF_PATH);
-
-        SequenceFile.Reader reader = null;
-        Path path = new Path(HDFA_PATH_DATA + "/complete2" + "/complete2-r-00000");
+        tldriver.run(HDFS_PATH, RESULT_PATH, HDFA_PATH_DATA, COUNT_REDUCER, SIZE_KMER, 1, HADOOP_CONF_PATH);
+        
+/*        SequenceFile.Reader reader = null;
+        Path path = new Path(RESULT_PATH + "/part-00000");
+//        Path path = new Path(RESULT_PATH + "/uncomplete0" + "/uncomplete0-r-00000");
         reader = new SequenceFile.Reader(dfs, path, conf);
-        KmerBytesWritable key = (KmerBytesWritable) ReflectionUtils.newInstance(reader.getKeyClass(), conf);
+        VKmerBytesWritable key = (VKmerBytesWritable) ReflectionUtils.newInstance(reader.getKeyClass(), conf);
         MergePathValueWritable value = (MergePathValueWritable) ReflectionUtils.newInstance(reader.getValueClass(), conf);
         File filePathTo = new File(TEST_SOURCE_DIR);
         BufferedWriter bw = new BufferedWriter(new FileWriter(filePathTo));
@@ -61,10 +63,10 @@
             bw.write(key.toString() + "\t" + value.getAdjBitMap() + "\t" + value.getFlag());
             bw.newLine();
         }
-        bw.close();
-
+        bw.close();*/
         dumpResult();
-        TestUtils.compareWithResult(new File(TEST_SOURCE_DIR), new File(EXPECTED_PATH));
+        
+//        TestUtils.compareWithResult(new File(TEST_SOURCE_DIR), new File(EXPECTED_PATH));
 
         cleanupHadoop();
 
@@ -96,7 +98,8 @@
     }
 
     private void dumpResult() throws IOException {
-        Path src = new Path(HDFA_PATH_DATA + "/" + "complete2");
+//        Path src = new Path(HDFA_PATH_DATA + "/" + "complete2");
+        Path src = new Path(RESULT_PATH);
         Path dest = new Path(ACTUAL_RESULT_DIR + "/");
         dfs.copyToLocalFile(src, dest);
     }
diff --git a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/pathmergingh2/MergePathH2Test.java b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/pathmergingh2/MergePathH2Test.java
new file mode 100644
index 0000000..ff15299
--- /dev/null
+++ b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/pathmergingh2/MergePathH2Test.java
@@ -0,0 +1,105 @@
+package edu.uci.ics.pathmergingh2;
+
+import java.io.BufferedWriter;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import org.apache.commons.io.FileUtils;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hdfs.MiniDFSCluster;
+import org.apache.hadoop.io.SequenceFile;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.MiniMRCluster;
+import org.apache.hadoop.util.ReflectionUtils;
+import org.junit.Test;
+import edu.uci.ics.genomix.type.KmerBytesWritable;
+import edu.uci.ics.genomix.type.VKmerBytesWritable;
+import edu.uci.ics.utils.TestUtils;
+
+@SuppressWarnings("deprecation")
+public class MergePathH2Test {
+    private static final String ACTUAL_RESULT_DIR = "actual4";
+    private static final String COMPARE_DIR = "compare";
+    private JobConf conf = new JobConf();
+    private static final String HADOOP_CONF_PATH = ACTUAL_RESULT_DIR + File.separator + "conf.xml";
+    private static final String DATA_PATH = "actual2" + "/result2" + "/part-00000";
+    private static final String HDFS_PATH = "/webmap";
+    private static final String HDFA_PATH_DATA = "/webmapdata";
+    
+    private static final String RESULT_PATH = "/result4";
+    private static final String EXPECTED_PATH = "expected/result4";
+    private static final String TEST_SOURCE_DIR = COMPARE_DIR + RESULT_PATH + "/comparesource.txt";
+    private static final int COUNT_REDUCER = 1;
+    private static final int SIZE_KMER = 3;
+
+    private MiniDFSCluster dfsCluster;
+    private MiniMRCluster mrCluster;
+    private FileSystem dfs;
+
+    @SuppressWarnings("resource")
+    @Test
+    public void test() throws Exception {
+        FileUtils.forceMkdir(new File(ACTUAL_RESULT_DIR));
+        FileUtils.cleanDirectory(new File(ACTUAL_RESULT_DIR));
+        startHadoop();
+
+        MergePathH2Driver tldriver = new MergePathH2Driver();
+        tldriver.run(HDFS_PATH, RESULT_PATH, HDFA_PATH_DATA, COUNT_REDUCER, SIZE_KMER, 1, HADOOP_CONF_PATH);
+        
+/*        SequenceFile.Reader reader = null;
+//        Path path = new Path(RESULT_PATH + "/part-00000");
+        Path path = new Path(RESULT_PATH + "/uncomplete0" + "/uncomplete0-r-00000");
+        reader = new SequenceFile.Reader(dfs, path, conf);
+        VKmerBytesWritable key = (VKmerBytesWritable) ReflectionUtils.newInstance(reader.getKeyClass(), conf);
+        MergePathValueWritable value = (MergePathValueWritable) ReflectionUtils.newInstance(reader.getValueClass(), conf);
+        File filePathTo = new File(TEST_SOURCE_DIR);
+        BufferedWriter bw = new BufferedWriter(new FileWriter(filePathTo));
+        while (reader.next(key, value)) {
+            bw.write(key.toString() + "\t" + value.getAdjBitMap() + "\t" + value.getFlag());
+            bw.newLine();
+        }
+        bw.close();*/
+//        dumpResult();
+        
+//        TestUtils.compareWithResult(new File(TEST_SOURCE_DIR), new File(EXPECTED_PATH));
+
+        cleanupHadoop();
+
+    }
+    private void startHadoop() throws IOException {
+        FileSystem lfs = FileSystem.getLocal(new Configuration());
+        lfs.delete(new Path("build"), true);
+        System.setProperty("hadoop.log.dir", "logs");
+        dfsCluster = new MiniDFSCluster(conf, 2, true, null);
+        dfs = dfsCluster.getFileSystem();
+        mrCluster = new MiniMRCluster(4, dfs.getUri().toString(), 2);
+
+        Path src = new Path(DATA_PATH);
+        Path dest = new Path(HDFS_PATH + "/");
+        dfs.mkdirs(dest);
+        dfs.copyFromLocalFile(src, dest);
+        Path data = new Path(HDFA_PATH_DATA + "/");
+        dfs.mkdirs(data);
+   
+        DataOutputStream confOutput = new DataOutputStream(new FileOutputStream(new File(HADOOP_CONF_PATH)));
+        conf.writeXml(confOutput);
+        confOutput.flush();
+        confOutput.close();
+    }
+
+    private void cleanupHadoop() throws IOException {
+        mrCluster.shutdown();
+        dfsCluster.shutdown();
+    }
+
+    private void dumpResult() throws IOException {
+//        Path src = new Path(HDFA_PATH_DATA + "/" + "complete2");
+        Path src = new Path(RESULT_PATH);
+        Path dest = new Path(ACTUAL_RESULT_DIR + "/");
+        dfs.copyToLocalFile(src, dest);
+    }
+}
\ No newline at end of file
diff --git a/genomix/genomix-hadoop/testactual/source.txt b/genomix/genomix-hadoop/testactual/source.txt
deleted file mode 100644
index aa7a107..0000000
--- a/genomix/genomix-hadoop/testactual/source.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-ATAGAAGATCGA	A|T	1
-AATAGAAGATCG	|A	1
-TAGAAGATCGAT	A|	1
diff --git a/genomix/genomix-hyracks/pom.xml b/genomix/genomix-hyracks/pom.xml
index b246a0e..ca5cb61 100644
--- a/genomix/genomix-hyracks/pom.xml
+++ b/genomix/genomix-hyracks/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>genomix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<properties>
@@ -175,40 +175,40 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-data-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
@@ -222,13 +222,13 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks.examples</groupId>
 			<artifactId>hyracks-integration-tests</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-ipc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
@@ -245,19 +245,19 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-hdfs-core</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-hdfs-core</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>test-jar</type>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>genomix-data</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/genomix/genomix-pregelix/pom.xml b/genomix/genomix-pregelix/pom.xml
index 4a810b7..854335f 100644
--- a/genomix/genomix-pregelix/pom.xml
+++ b/genomix/genomix-pregelix/pom.xml
@@ -4,7 +4,7 @@
   <groupId>edu.uci.ics.pregelix</groupId>
   <artifactId>genomix-pregelix</artifactId>
   <packaging>jar</packaging>
-  <version>0.2.5-SNAPSHOT</version>
+  <version>0.2.6-SNAPSHOT</version>
   <name>genomix-pregelix</name>
 
   <properties>
@@ -124,14 +124,14 @@
                 <dependency>
                 	<groupId>edu.uci.ics.hyracks</groupId>
                 	<artifactId>pregelix-core</artifactId>
-                	<version>0.2.5-SNAPSHOT</version>
+                	<version>0.2.6-SNAPSHOT</version>
                 	<type>jar</type>
                 	<scope>compile</scope>
                 </dependency>
                  <dependency>
                 	<groupId>edu.uci.ics.hyracks</groupId>
                 	<artifactId>genomix-data</artifactId>
-                	<version>0.2.5-SNAPSHOT</version>
+                	<version>0.2.6-SNAPSHOT</version>
                 	<type>jar</type>
                 	<scope>compile</scope>
                 </dependency>
diff --git a/hivesterix/hivesterix-common/pom.xml b/hivesterix/hivesterix-common/pom.xml
index bf0ec0a..2dbb788 100644
--- a/hivesterix/hivesterix-common/pom.xml
+++ b/hivesterix/hivesterix-common/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>hivesterix</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<build>
@@ -30,21 +30,21 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>algebricks-compiler</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-hdfs-core</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/hivesterix/hivesterix-dist/pom.xml b/hivesterix/hivesterix-dist/pom.xml
index aef0320..5f4c46b 100644
--- a/hivesterix/hivesterix-dist/pom.xml
+++ b/hivesterix/hivesterix-dist/pom.xml
@@ -2,13 +2,13 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>edu.uci.ics.hyracks</groupId>
 	<artifactId>hivesterix-dist</artifactId>
-	<version>0.2.5-SNAPSHOT</version>
+	<version>0.2.6-SNAPSHOT</version>
 	<name>hivesterix-dist</name>
 
 	<parent>
                 <groupId>edu.uci.ics.hyracks</groupId>
                 <artifactId>hivesterix</artifactId>
-                <version>0.2.5-SNAPSHOT</version>
+                <version>0.2.6-SNAPSHOT</version>
         </parent>
 
 	<dependencies>
@@ -276,14 +276,14 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hivesterix-translator</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hivesterix-optimizer</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
@@ -297,21 +297,21 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>algebricks-compiler</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/hivesterix/hivesterix-dist/src/main/resources/conf/cluster.properties b/hivesterix/hivesterix-dist/src/main/resources/conf/cluster.properties
index 2d2401a..056cce4 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/conf/cluster.properties
+++ b/hivesterix/hivesterix-dist/src/main/resources/conf/cluster.properties
@@ -4,9 +4,6 @@
 #The CC port for Hyracks cluster management
 CC_CLUSTERPORT=1099
 
-#The directory of hyracks binaries
-HYRACKS_HOME=../../../../hyracks
-
 #The tmp directory for cc to install jars
 CCTMP_DIR=/tmp/t1
 
@@ -29,9 +26,11 @@
 FRAME_SIZE=65536
 
 #CC JAVA_OPTS
-CCJAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=7001,server=y,suspend=n -Xmx1g -Djava.util.logging.config.file=logging.properties"
+CCJAVA_OPTS="-Xmx1g -Djava.util.logging.config.file=logging.properties"
+# debug option: CCJAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=7001,server=y,suspend=n -Xmx1g -Djava.util.logging.config.file=logging.properties"
 # Yourkit option: -agentpath:/grid/0/dev/vborkar/tools/yjp-10.0.4/bin/linux-x86-64/libyjpagent.so=port=20001"
 
 #NC JAVA_OPTS
-NCJAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=7002,server=y,suspend=n -Xmx1g -Djava.util.logging.config.file=logging.properties"
-
+NCJAVA_OPTS="-Xmx1g -Djava.util.logging.config.file=logging.properties"
+# debug option: NCJAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=7002,server=y,suspend=n -Xmx1g -Djava.util.logging.config.file=logging.properties"
+# Yourkit option: -agentpath:/grid/0/dev/vborkar/tools/yjp-10.0.4/bin/linux-x86-64/libyjpagent.so=port=20001"
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/getip.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/getip.sh
index 8c9ae76..1b44d09 100755
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/getip.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/getip.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 #get the OS
 OS_NAME=`uname -a|awk '{print $1}'`
 LINUX_OS='Linux'
@@ -6,10 +24,10 @@
 then
         #Get IP Address
         IPADDR=`/sbin/ifconfig eth0 | grep "inet " | awk '{print $2}' | cut -f 2 -d ':'`
-	if [ "$IPADDR" = "" ]
+    	if [ "$IPADDR" = "" ]
         then
-                IPADDR=`/sbin/ifconfig em1 | grep "inet " | awk '{print $2}' | cut -f 2 -d ':'`
-        fi
+		IPADDR=`/sbin/ifconfig em1 | grep "inet " | awk '{print $2}' | cut -f 2 -d ':'`
+        fi 
 	if [ "$IPADDR" = "" ]
         then
 		IPADDR=`/sbin/ifconfig lo | grep "inet " | awk '{print $2}' | cut -f 2 -d ':'`
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/hive b/hivesterix/hivesterix-dist/src/main/resources/scripts/hive
index f98f340..38a9e33 100755
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/hive
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/hive
@@ -81,7 +81,7 @@
   exit 3;
 fi
 
-CLASSPATH=${CLASSPATH}:${HIVE_LIB}/a-hive-path.jar
+CLASSPATH=${CLASSPATH}:${HIVE_LIB}/a-hive-patch.jar
 
 for f in ${HIVE_LIB}/*.jar; do
   CLASSPATH=${CLASSPATH}:$f;
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/hivesterixcc b/hivesterix/hivesterix-dist/src/main/resources/scripts/hivesterixcc
new file mode 100755
index 0000000..d2adffd
--- /dev/null
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/hivesterixcc
@@ -0,0 +1,122 @@
+#!/bin/sh
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
+# resolve links - $0 may be a softlink
+PRG="$0"
+
+while [ -h "$PRG" ]; do
+  ls=`ls -ld "$PRG"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    PRG="$link"
+  else
+    PRG=`dirname "$PRG"`/"$link"
+  fi
+done
+
+PRGDIR=`dirname "$PRG"`
+BASEDIR=`cd "$PRGDIR/.." >/dev/null; pwd`
+
+
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  Darwin*) darwin=true
+           if [ -z "$JAVA_VERSION" ] ; then
+             JAVA_VERSION="CurrentJDK"
+           else
+             echo "Using Java version: $JAVA_VERSION"
+           fi
+           if [ -z "$JAVA_HOME" ] ; then
+             JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/${JAVA_VERSION}/Home
+           fi
+           ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# If a specific java binary isn't specified search for the standard 'java' binary
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD=`which java`
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." 1>&2
+  echo "  We cannot execute $JAVACMD" 1>&2
+  exit 1
+fi
+
+if [ -z "$REPO" ]
+then
+  REPO="$BASEDIR"/lib
+fi
+
+CLASSPATH=$CLASSPATH_PREFIX:"$HADOOP_HOME"/conf:/etc/hadoop/conf:"$BASEDIR"/etc:$1
+
+#add the desired hive patch
+CLASSPATH=${CLASSPATH}:${REPO}/a-hive-patch.jar
+
+#add the desired jetty jar
+for f in ${REPO}/servlet-api-3*.jar; do
+  CLASSPATH=${CLASSPATH}:$f;
+done
+
+for f in ${REPO}/*.jar; do
+  CLASSPATH=${CLASSPATH}:$f;
+done
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$HOME" ] && HOME=`cygpath --path --windows "$HOME"`
+  [ -n "$BASEDIR" ] && BASEDIR=`cygpath --path --windows "$BASEDIR"`
+  [ -n "$REPO" ] && REPO=`cygpath --path --windows "$REPO"`
+fi
+
+exec "$JAVACMD" $JAVA_OPTS  \
+  -classpath "$CLASSPATH" \
+  -Dapp.name="hivesterixcc" \
+  -Dapp.pid="$$" \
+  -Dapp.repo="$REPO" \
+  -Dapp.home="$BASEDIR" \
+  -Dbasedir="$BASEDIR" \
+  edu.uci.ics.hyracks.control.cc.CCDriver \
+  "$@"
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/hivesterixnc b/hivesterix/hivesterix-dist/src/main/resources/scripts/hivesterixnc
new file mode 100755
index 0000000..40f3ec6
--- /dev/null
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/hivesterixnc
@@ -0,0 +1,117 @@
+#!/bin/sh
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
+# resolve links - $0 may be a softlink
+PRG="$0"
+
+while [ -h "$PRG" ]; do
+  ls=`ls -ld "$PRG"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    PRG="$link"
+  else
+    PRG=`dirname "$PRG"`/"$link"
+  fi
+done
+
+PRGDIR=`dirname "$PRG"`
+BASEDIR=`cd "$PRGDIR/.." >/dev/null; pwd`
+
+
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  Darwin*) darwin=true
+           if [ -z "$JAVA_VERSION" ] ; then
+             JAVA_VERSION="CurrentJDK"
+           else
+             echo "Using Java version: $JAVA_VERSION"
+           fi
+           if [ -z "$JAVA_HOME" ] ; then
+             JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/${JAVA_VERSION}/Home
+           fi
+           ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# If a specific java binary isn't specified search for the standard 'java' binary
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD=`which java`
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." 1>&2
+  echo "  We cannot execute $JAVACMD" 1>&2
+  exit 1
+fi
+
+if [ -z "$REPO" ]
+then
+  REPO="$BASEDIR"/lib
+fi
+
+CLASSPATH=$CLASSPATH_PREFIX:"$HADOOP_HOME"/conf:/etc/hadoop/conf:"$BASEDIR"/etc:$1
+
+#add the desired hive patch
+CLASSPATH=${CLASSPATH}:${REPO}/a-hive-patch.jar
+
+for f in ${REPO}/*.jar; do
+  CLASSPATH=${CLASSPATH}:$f;
+done
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$HOME" ] && HOME=`cygpath --path --windows "$HOME"`2
+  [ -n "$BASEDIR" ] && BASEDIR=`cygpath --path --windows "$BASEDIR"`
+  [ -n "$REPO" ] && REPO=`cygpath --path --windows "$REPO"`
+fi
+
+exec "$JAVACMD" $JAVA_OPTS  \
+  -classpath "$CLASSPATH" \
+  -Dapp.name="hivesterixnc" \
+  -Dapp.pid="$$" \
+  -Dapp.repo="$REPO" \
+  -Dapp.home="$BASEDIR" \
+  -Dbasedir="$BASEDIR" \
+  edu.uci.ics.hyracks.control.nc.NCDriver \
+  "$@"
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/startAllNCs.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/startAllNCs.sh
index d30da26..34a318d 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/startAllNCs.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/startAllNCs.sh
@@ -1,6 +1,24 @@
-PREGELIX_PATH=`pwd`
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
+HIVESTERIX_PATH=`pwd`
 
 for i in `cat conf/slaves`
 do
-   ssh $i "cd ${PREGELIX_PATH}; export JAVA_HOME=${JAVA_HOME}; bin/startnc.sh"
+   ssh $i "cd ${HIVESTERIX_PATH}; export JAVA_HOME=${JAVA_HOME}; bin/startnc.sh"
 done
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/startCluster.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/startCluster.sh
index 6aa9161..cddf9a4 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/startCluster.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/startCluster.sh
@@ -1,19 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 bin/startcc.sh
 sleep 5
 bin/startAllNCs.sh
-
-. conf/cluster.properties
-# do we need to specify the version somewhere?
-hyrackcmd=`ls ${HYRACKS_HOME}/hyracks-cli/target/hyracks-cli-*-binary-assembly/bin/hyrackscli`
-# find zip file
-appzip=`ls $PWD/../hivesterix-dist-*-binary-assembly.zip`
-
-[ -f $hyrackcmd ] || { echo "Hyracks commandline is missing"; exit -1;}
-[ -f $appzip ] || { echo "Genomix binary-assembly.zip is missing"; exit -1;}
-
-CCHOST_NAME=`cat conf/master`
-
-IPADDR=`bin/getip.sh`
-echo "connect to \"${IPADDR}:${CC_CLIENTPORT}\"; create application hivesterix \"$appzip\";" | $hyrackcmd 
-echo ""
-
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/startDebugNc.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/startDebugNc.sh
index fe6cf27..cab8bb3 100755
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/startDebugNc.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/startDebugNc.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 
 #Get the IP address of the cc
@@ -40,11 +58,11 @@
 #Set JAVA_OPTS
 export JAVA_OPTS=$NCJAVA_OPTS2
 
-cd $HYRACKS_HOME
-HYRACKS_HOME=`pwd`
+HIVESTERIX_HOME=`pwd`
 
 #Enter the temp dir
 cd $NCTMP_DIR2
 
 #Launch hyracks nc
-$HYRACKS_HOME/hyracks-server/target/appassembler/bin/hyracksnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -node-id $NODEID -iodevices "${IO_DIRS2}" &> $NCLOGS_DIR2/$NODEID.log &
+#echo ${HIVESTERIX_HOME}/bin/hivesterixnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -result-ip-address $IPADDR  -node-id $NODEID -iodevices "${IO_DIRS}"
+${HIVESTERIX_HOME}/bin/hivesterixnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -result-ip-address $IPADDR  -node-id $NODEID -iodevices "${IO_DIRS2}" &> $NCLOGS_DIR2/$NODEID.log &
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/startcc.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/startcc.sh
index 484ecac..213b9eb 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/startcc.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/startcc.sh
@@ -1,4 +1,21 @@
 #!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 
 #Import cluster properties
@@ -20,12 +37,15 @@
 export JAVA_HOME=$JAVA_HOME
 export JAVA_OPTS=$CCJAVA_OPTS
 
-#Launch hyracks cc script
-chmod -R 755 $HYRACKS_HOME
+HIVESTERIX_HOME=`pwd`
+
+#Enter the temp dir
+cd $CCTMP_DIR
+
 if [ -f "conf/topology.xml"  ]; then
 #Launch hyracks cc script with topology
-$HYRACKS_HOME/hyracks-server/target/appassembler/bin/hyrackscc -client-net-ip-address $CCHOST -cluster-net-ip-address $CCHOST -client-net-port $CC_CLIENTPORT -cluster-net-port $CC_CLUSTERPORT -max-heartbeat-lapse-periods 999999 -default-max-job-attempts 0 -job-history-size 0 -cluster-topology "conf/topology.xml" &> $CCLOGS_DIR/cc.log &
+${HIVESTERIX_HOME}/bin/hivesterixcc -client-net-ip-address $CCHOST -cluster-net-ip-address $CCHOST -client-net-port $CC_CLIENTPORT -cluster-net-port $CC_CLUSTERPORT -max-heartbeat-lapse-periods 999999 -default-max-job-attempts 0 -job-history-size 0 -cluster-topology "conf/topology.xml" &> $CCLOGS_DIR/cc.log &
 else
 #Launch hyracks cc script without toplogy
-$HYRACKS_HOME/hyracks-server/target/appassembler/bin/hyrackscc -client-net-ip-address $CCHOST -cluster-net-ip-address $CCHOST -client-net-port $CC_CLIENTPORT -cluster-net-port $CC_CLUSTERPORT -max-heartbeat-lapse-periods 999999 -default-max-job-attempts 0 -job-history-size 0 &> $CCLOGS_DIR/cc.log &
+${HIVESTERIX_HOME}/bin/hivesterixcc -client-net-ip-address $CCHOST -cluster-net-ip-address $CCHOST -client-net-port $CC_CLIENTPORT -cluster-net-port $CC_CLUSTERPORT -max-heartbeat-lapse-periods 999999 -default-max-job-attempts 0 -job-history-size 0 &> $CCLOGS_DIR/cc.log &
 fi
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/startnc.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/startnc.sh
index 23a4c36..904858d 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/startnc.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/startnc.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 
 MY_NAME=`hostname`
@@ -39,11 +57,11 @@
 #Set JAVA_OPTS
 export JAVA_OPTS=$NCJAVA_OPTS
 
-cd $HYRACKS_HOME
-HYRACKS_HOME=`pwd`
+HIVESTERIX_HOME=`pwd`
 
 #Enter the temp dir
 cd $NCTMP_DIR
 
 #Launch hyracks nc
-$HYRACKS_HOME/hyracks-server/target/appassembler/bin/hyracksnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -result-ip-address $IPADDR -node-id $NODEID -iodevices "${IO_DIRS}" &> $NCLOGS_DIR/$NODEID.log &
+#echo ${HIVESTERIX_HOME}/bin/hivesterixnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -result-ip-address $IPADDR  -node-id $NODEID -iodevices "${IO_DIRS}"
+${HIVESTERIX_HOME}/bin/hivesterixnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -result-ip-address $IPADDR  -node-id $NODEID -iodevices "${IO_DIRS}" &> $NCLOGS_DIR/$NODEID.log &
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/stopAllNCs.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/stopAllNCs.sh
index 12367c1..456ff68 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/stopAllNCs.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/stopAllNCs.sh
@@ -1,6 +1,24 @@
-PREGELIX_PATH=`pwd`
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
+HIVESTERIX_PATH=`pwd`
 
 for i in `cat conf/slaves`
 do
-   ssh $i "cd ${PREGELIX_PATH}; bin/stopnc.sh"
+   ssh $i "cd ${HIVESTERIX_PATH}; bin/stopnc.sh"
 done
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/stopCluster.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/stopCluster.sh
index 4889934..6b829aa 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/stopCluster.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/stopCluster.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 bin/stopAllNCs.sh
 sleep 2
 bin/stopcc.sh
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/stopcc.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/stopcc.sh
index c2f525a..d7f78a8 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/stopcc.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/stopcc.sh
@@ -1,8 +1,37 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 . conf/cluster.properties
 
 #Kill process
-PID=`ps -ef|grep ${USER}|grep java|grep hyracks|awk '{print $2}'`
+#Kill process
+PID=`ps -ef|grep ${USER}|grep java|grep 'Dapp.name=hivesterixcc'|awk '{print $2}'`
+
+if [ "$PID" == "" ]; then
+    PID=`ps -ef|grep ${USER}|grep java|grep 'hyracks'|awk '{print $2}'`
+fi
+
+if [ "$PID" == "" ]; then
+    USERID=`id | sed 's/^uid=//;s/(.*$//'`
+    PID=`ps -ef|grep ${USERID}|grep java|grep 'Dapp.name=hivesterixcc'|awk '{print $2}'`
+fi
+
 echo $PID
 kill -9 $PID
 
diff --git a/hivesterix/hivesterix-dist/src/main/resources/scripts/stopnc.sh b/hivesterix/hivesterix-dist/src/main/resources/scripts/stopnc.sh
index 35c4794..5dc4ccd 100644
--- a/hivesterix/hivesterix-dist/src/main/resources/scripts/stopnc.sh
+++ b/hivesterix/hivesterix-dist/src/main/resources/scripts/stopnc.sh
@@ -1,8 +1,26 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 . conf/cluster.properties
 
 #Kill process
-PID=`ps -ef|grep ${USER}|grep java|grep 'Dapp.name=hyracksnc'|awk '{print $2}'`
+PID=`ps -ef|grep ${USER}|grep java|grep 'Dapp.name=hivesterixnc'|awk '{print $2}'`
 
 if [ "$PID" == "" ]; then
   PID=`ps -ef|grep ${USER}|grep java|grep 'hyracks'|awk '{print $2}'`
@@ -10,7 +28,7 @@
 
 if [ "$PID" == "" ]; then
   USERID=`id | sed 's/^uid=//;s/(.*$//'`
-  PID=`ps -ef|grep ${USERID}|grep java|grep 'Dapp.name=hyracksnc'|awk '{print $2}'`
+  PID=`ps -ef|grep ${USERID}|grep java|grep 'Dapp.name=hivesterixnc'|awk '{print $2}'`
 fi
 
 echo $PID
diff --git a/hivesterix/hivesterix-optimizer/pom.xml b/hivesterix/hivesterix-optimizer/pom.xml
index 77a5d53..55d6adf 100644
--- a/hivesterix/hivesterix-optimizer/pom.xml
+++ b/hivesterix/hivesterix-optimizer/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>hivesterix</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hivesterix-optimizer</artifactId>
@@ -30,14 +30,14 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hivesterix-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hivesterix-translator</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/hivesterix/hivesterix-runtime/pom.xml b/hivesterix/hivesterix-runtime/pom.xml
index fc55273..18b8f62 100644
--- a/hivesterix/hivesterix-runtime/pom.xml
+++ b/hivesterix/hivesterix-runtime/pom.xml
@@ -2,13 +2,13 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>edu.uci.ics.hyracks</groupId>
 	<artifactId>hivesterix-runtime</artifactId>
-	<version>0.2.5-SNAPSHOT</version>
+	<version>0.2.6-SNAPSHOT</version>
 	<name>hivesterix-runtime</name>
 
 	<parent>
                 <groupId>edu.uci.ics.hyracks</groupId>
                 <artifactId>hivesterix</artifactId>
-                <version>0.2.5-SNAPSHOT</version>
+                <version>0.2.6-SNAPSHOT</version>
         </parent>
 
 	<dependencies>
@@ -276,35 +276,35 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>algebricks-compiler</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hivesterix-serde</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hivesterix-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/hivesterix/hivesterix-serde/pom.xml b/hivesterix/hivesterix-serde/pom.xml
index 72c9cc9..bf5a9b8 100644
--- a/hivesterix/hivesterix-serde/pom.xml
+++ b/hivesterix/hivesterix-serde/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>hivesterix</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hivesterix-serde</artifactId>
@@ -44,14 +44,14 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>algebricks-compiler</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
                         <groupId>edu.uci.ics.hyracks</groupId>
                         <artifactId>hivesterix-common</artifactId>
-                        <version>0.2.5-SNAPSHOT</version>
+                        <version>0.2.6-SNAPSHOT</version>
                         <type>jar</type>
                         <scope>compile</scope>
                 </dependency>
diff --git a/hivesterix/hivesterix-translator/pom.xml b/hivesterix/hivesterix-translator/pom.xml
index e7ad3ed..7bcbb85 100644
--- a/hivesterix/hivesterix-translator/pom.xml
+++ b/hivesterix/hivesterix-translator/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>hivesterix</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<build>
@@ -37,21 +37,21 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>algebricks-compiler</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hivesterix-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hivesterix-runtime</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/hivesterix/pom.xml b/hivesterix/pom.xml
index 6ae37b5..3a212ec 100644
--- a/hivesterix/pom.xml
+++ b/hivesterix/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>edu.uci.ics.hyracks</groupId>
 	<artifactId>hivesterix</artifactId>
-	<version>0.2.5-SNAPSHOT</version>
+	<version>0.2.6-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>hivesterix</name>
 
diff --git a/hyracks/hyracks-api/pom.xml b/hyracks/hyracks-api/pom.xml
index 45421e1..04a64c1 100644
--- a/hyracks/hyracks-api/pom.xml
+++ b/hyracks/hyracks-api/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -47,7 +47,7 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-ipc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   	</dependency>
   	<dependency>
   		<groupId>org.apache.commons</groupId>
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksConnection.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksConnection.java
index eb25b70..6af8dd9 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksConnection.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksConnection.java
@@ -123,10 +123,12 @@
 
     @Override
     public DeploymentId deployBinary(List<String> jars) throws Exception {
+        /** generate a deployment id */
         DeploymentId deploymentId = new DeploymentId(UUID.randomUUID().toString());
         List<URL> binaryURLs = new ArrayList<URL>();
         if (jars != null && jars.size() > 0) {
             HttpClient hc = new DefaultHttpClient();
+            /** upload jars through a http client one-by-one to the CC server */
             for (String jar : jars) {
                 int slashIndex = jar.lastIndexOf('/');
                 String fileName = jar.substring(slashIndex + 1);
@@ -139,11 +141,14 @@
                     response.getEntity().consumeContent();
                 }
                 if (response.getStatusLine().getStatusCode() != 200) {
+                    hci.unDeployBinary(deploymentId);
                     throw new HyracksException(response.getStatusLine().toString());
                 }
+                /** add the uploaded URL address into the URLs of jars to be deployed at NCs */
                 binaryURLs.add(new URL(url));
             }
         }
+        /**deploy the URLs to the CC and NCs*/
         hci.deployBinary(binaryURLs, deploymentId);
         return deploymentId;
     }
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientConnection.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientConnection.java
index 37bbdfa..41b07d7 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientConnection.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientConnection.java
@@ -168,4 +168,4 @@
     public JobId startJob(DeploymentId deploymentId, IActivityClusterGraphGeneratorFactory acggf,
             EnumSet<JobFlag> jobFlags) throws Exception;
 
-}
\ No newline at end of file
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/deployment/DeploymentId.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/deployment/DeploymentId.java
index b642bc7..8d8d728 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/deployment/DeploymentId.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/deployment/DeploymentId.java
@@ -1,7 +1,28 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package edu.uci.ics.hyracks.api.deployment;
 
 import java.io.Serializable;
 
+/**
+ * The representation of a deployment id
+ * 
+ * @author yingyib
+ *
+ */
 public class DeploymentId implements Serializable {
     private static final long serialVersionUID = 1L;
 
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/job/IJobSerializerDeserializer.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/job/IJobSerializerDeserializer.java
index d402cd3..a105953 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/job/IJobSerializerDeserializer.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/job/IJobSerializerDeserializer.java
@@ -21,14 +21,49 @@
 
 import edu.uci.ics.hyracks.api.exceptions.HyracksException;
 
+/**
+ * The serializer/deserializer/classloader interface for job/task information such as job specifications, activity graphs and so on.
+ * 
+ * @author yingyib
+ */
 public interface IJobSerializerDeserializer {
 
+    /**
+     * Deserialize the bytes to an object
+     * 
+     * @param bytes
+     *            the binary content of an object
+     * @return the deserialized object
+     * @throws HyracksException
+     */
     public Object deserialize(byte[] bytes) throws HyracksException;
 
-    public byte[] serialize(Serializable job) throws HyracksException;
+    /**
+     * Serialize a object into bytes
+     * 
+     * @param object
+     *            a Serializable Java object
+     * @return
+     *         the byte array which contains the binary content of the input object
+     * @throws HyracksException
+     */
+    public byte[] serialize(Serializable object) throws HyracksException;
 
+    /**
+     * Load a class by its name
+     * 
+     * @param className
+     *            the name of the class
+     * @return
+     * @throws HyracksException
+     */
     public Class<?> loadClass(String className) throws HyracksException;
 
+    /**
+     * 
+     * @param binaryURLs
+     * @throws HyracksException
+     */
     public void addClassPathURLs(List<URL> binaryURLs) throws HyracksException;
 
     public ClassLoader getClassLoader() throws HyracksException;
diff --git a/hyracks/hyracks-client/pom.xml b/hyracks/hyracks-client/pom.xml
index 4febc6e..76a2659 100644
--- a/hyracks/hyracks-client/pom.xml
+++ b/hyracks/hyracks-client/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,22 +25,22 @@
  <dependency>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-api</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
  </dependency>
  <dependency>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-net</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
  </dependency>
  <dependency>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-comm</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
  </dependency>
   <dependency>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-dataflow-common</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
  </dependency>
   </dependencies>
 </project>
diff --git a/hyracks/hyracks-comm/pom.xml b/hyracks/hyracks-comm/pom.xml
index 647faa6..036e507 100644
--- a/hyracks/hyracks-comm/pom.xml
+++ b/hyracks/hyracks-comm/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,12 +25,12 @@
  <dependency>
  	<groupId>edu.uci.ics.hyracks</groupId>
  	<artifactId>hyracks-api</artifactId>
- 	<version>0.2.5-SNAPSHOT</version>
+ 	<version>0.2.6-SNAPSHOT</version>
  </dependency>
   <dependency>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-net</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
  </dependency>
   </dependencies>
 </project>
diff --git a/hyracks/hyracks-control/hyracks-control-cc/pom.xml b/hyracks/hyracks-control/hyracks-control-cc/pom.xml
index 2af1a85..7782346 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/pom.xml
+++ b/hyracks/hyracks-control/hyracks-control-cc/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-control</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -26,7 +26,7 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/web/ApplicationInstallationHandler.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/web/ApplicationInstallationHandler.java
index 0236c4b..35165de 100755
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/web/ApplicationInstallationHandler.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/web/ApplicationInstallationHandler.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2009-2010 by The Regents of the University of California
+ * Copyright 2009-2013 by The Regents of the University of California
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * you may obtain a copy of the License from
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/web/WebServer.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/web/WebServer.java
index c32cb97..cd7a684 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/web/WebServer.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/web/WebServer.java
@@ -71,6 +71,7 @@
         addHandler(createAdminConsoleHandler());
         addHandler(createStaticResourcesHandler());
 
+        /** the service of uploading/downloading deployment jars */
         handler = new ContextHandler("/applications");
         handler.setHandler(new ApplicationInstallationHandler(ccs));
         addHandler(handler);
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/CliDeployBinaryWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/CliDeployBinaryWork.java
index fa44633..1a889f8 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/CliDeployBinaryWork.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/CliDeployBinaryWork.java
@@ -30,6 +30,14 @@
 import edu.uci.ics.hyracks.control.common.work.IPCResponder;
 import edu.uci.ics.hyracks.control.common.work.SynchronizableWork;
 
+/***
+ * This is the work happens on the CC for a dynamic deployment.
+ * It first deploys the jar to CC application context.
+ * Then, it remotely calls each NC service to deploy the jars listed as http URLs.
+ * NOTE: in current implementation, a user cannot deploy with the same deployment id simultaneously.
+ * 
+ * @author yingyib
+ */
 public class CliDeployBinaryWork extends SynchronizableWork {
 
     private ClusterControllerService ccs;
@@ -67,6 +75,8 @@
                 nodeIds.add(nc);
             }
             final DeploymentRun dRun = new DeploymentRun(nodeIds);
+
+            /** The following call prevents a user to deploy with the same deployment id simultaneously. */
             ccs.addDeploymentRun(deploymentId, dRun);
 
             /***
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/CliUnDeployBinaryWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/CliUnDeployBinaryWork.java
index 8e429c9..d54444c 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/CliUnDeployBinaryWork.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/CliUnDeployBinaryWork.java
@@ -28,6 +28,14 @@
 import edu.uci.ics.hyracks.control.common.work.IPCResponder;
 import edu.uci.ics.hyracks.control.common.work.SynchronizableWork;
 
+/***
+ * This is the work happens on the CC for an undeployment.
+ * It first undeploys the jar to CC application context by giving it a deployment id.
+ * Then, it remotely calls each NC service to undeploy by giving them a deployment id.
+ * NOTE: in current implementation, a user cannot undeploy with the same deployment id simultaneously.
+ * 
+ * @author yingyib
+ */
 public class CliUnDeployBinaryWork extends SynchronizableWork {
 
     private ClusterControllerService ccs;
@@ -63,6 +71,8 @@
                 nodeIds.add(nc);
             }
             final DeploymentRun dRun = new DeploymentRun(nodeIds);
+            
+            /** The following call prevents a user to undeploy with the same deployment id simultaneously. */
             ccs.addDeploymentRun(deploymentId, dRun);
 
             /***
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/NotifyDeployBinaryWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/NotifyDeployBinaryWork.java
index 903cad3..c4c8873 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/NotifyDeployBinaryWork.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/NotifyDeployBinaryWork.java
@@ -21,6 +21,11 @@
 import edu.uci.ics.hyracks.control.common.deployment.DeploymentStatus;
 import edu.uci.ics.hyracks.control.common.work.AbstractWork;
 
+/***
+ * This is the work happens on the CC when CC gets a deployment or undeployment notification status message from one NC.
+ * 
+ * @author yingyib
+ */
 public class NotifyDeployBinaryWork extends AbstractWork {
 
     private final ClusterControllerService ccs;
@@ -39,7 +44,7 @@
 
     @Override
     public void run() {
-        // notify that one NC is deployed
+        /** triggered remotely by a NC to notify that the NC is deployed */
         DeploymentRun dRun = ccs.getDeploymentRun(deploymentId);
         dRun.notifyDeploymentStatus(nodeId, deploymentStatus);
     }
diff --git a/hyracks/hyracks-control/hyracks-control-common/pom.xml b/hyracks/hyracks-control/hyracks-control-common/pom.xml
index 4ffb716..15e2840 100644
--- a/hyracks/hyracks-control/hyracks-control-common/pom.xml
+++ b/hyracks/hyracks-control/hyracks-control-common/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-control</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,7 +27,7 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/ClassLoaderJobSerializerDeserializer.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/ClassLoaderJobSerializerDeserializer.java
index 894f59b..3a35c25 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/ClassLoaderJobSerializerDeserializer.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/ClassLoaderJobSerializerDeserializer.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package edu.uci.ics.hyracks.control.common.deployment;
 
 import java.io.Serializable;
@@ -12,6 +27,12 @@
 import edu.uci.ics.hyracks.api.job.IJobSerializerDeserializer;
 import edu.uci.ics.hyracks.api.util.JavaSerializationUtils;
 
+/**
+ * This is the IJobSerializerDeserializer implementation for jobs with dynamic deployed jars.
+ * 
+ * @author yingyib
+ *
+ */
 public class ClassLoaderJobSerializerDeserializer implements IJobSerializerDeserializer {
 
     private URLClassLoader classLoader;
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentRun.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentRun.java
index 519905c..84cfbb1 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentRun.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentRun.java
@@ -1,8 +1,29 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package edu.uci.ics.hyracks.control.common.deployment;
 
 import java.util.Set;
 import java.util.TreeSet;
 
+/**
+ * The class maintain the status of a deployment process and the states
+ * of all slave machines involved in the deployment.
+ * 
+ * @author yingyib
+ */
 public class DeploymentRun implements IDeploymentStatusConditionVariable {
 
     private DeploymentStatus deploymentStatus = DeploymentStatus.FAIL;
@@ -12,10 +33,22 @@
         deploymentNodeIds.addAll(nodeIds);
     }
 
+    /**
+     * One notify the deployment status
+     * 
+     * @param nodeId
+     * @param status
+     */
     public synchronized void notifyDeploymentStatus(String nodeId, DeploymentStatus status) {
-        deploymentNodeIds.remove(nodeId);
-        if (deploymentNodeIds.size() == 0) {
-            deploymentStatus = DeploymentStatus.SUCCEED;
+        if (status == DeploymentStatus.SUCCEED) {
+            deploymentNodeIds.remove(nodeId);
+            if (deploymentNodeIds.size() == 0) {
+                deploymentStatus = DeploymentStatus.SUCCEED;
+                notifyAll();
+            }
+        } else {
+            deploymentNodeIds.clear();
+            deploymentStatus = DeploymentStatus.FAIL;
             notifyAll();
         }
     }
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentStatus.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentStatus.java
index 3690518..4ba50b7 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentStatus.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentStatus.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2009-2010 by The Regents of the University of California
+ * Copyright 2009-2013 by The Regents of the University of California
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * you may obtain a copy of the License from
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentUtils.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentUtils.java
index 715db96..0677e2e 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentUtils.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/DeploymentUtils.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package edu.uci.ics.hyracks.control.common.deployment;
 
 import java.io.File;
@@ -23,10 +38,24 @@
 import edu.uci.ics.hyracks.api.util.JavaSerializationUtils;
 import edu.uci.ics.hyracks.control.common.context.ServerContext;
 
+/**
+ * A utility class which is in charge of the actual work of deployments.
+ * 
+ * @author yingyib
+ */
 public class DeploymentUtils {
 
     private static final String DEPLOYMENT = "applications";
 
+    /**
+     * undeploy an existing deployment
+     * 
+     * @param deploymentId
+     *            the deployment id
+     * @param container
+     * @param ctx
+     * @throws HyracksException
+     */
     public static void undeploy(DeploymentId deploymentId, IJobSerializerDeserializerContainer container,
             ServerContext ctx) throws HyracksException {
         container.removeJobSerializerDeserializer(deploymentId);
@@ -43,6 +72,21 @@
         }
     }
 
+    /**
+     * Deploying jars in NC or CC
+     * 
+     * @param deploymentId
+     *            the deployment id
+     * @param urls
+     *            the jar URLs
+     * @param container
+     *            the container of serailizer/deserializer
+     * @param ctx
+     *            the ServerContext
+     * @param isNC
+     *            true is NC/false is CC
+     * @throws HyracksException
+     */
     public static void deploy(DeploymentId deploymentId, List<URL> urls, IJobSerializerDeserializerContainer container,
             ServerContext ctx, boolean isNC) throws HyracksException {
         IJobSerializerDeserializer jobSerDe = container.getJobSerializerDeerializer(deploymentId);
@@ -56,6 +100,17 @@
         jobSerDe.addClassPathURLs(downloadURLs(urls, deploymentDir, isNC));
     }
 
+    /**
+     * Deserialize bytes to an object according to a specific deployment
+     * 
+     * @param bytes
+     *            the bytes to be deserialized
+     * @param deploymentId
+     *            the deployment id
+     * @param appCtx
+     * @return the deserialized object
+     * @throws HyracksException
+     */
     public static Object deserialize(byte[] bytes, DeploymentId deploymentId, IApplicationContext appCtx)
             throws HyracksException {
         try {
@@ -69,6 +124,15 @@
         }
     }
 
+    /**
+     * Load a class from its class name
+     * 
+     * @param className
+     * @param deploymentId
+     * @param appCtx
+     * @return the loaded class
+     * @throws HyracksException
+     */
     public static Class<?> loadClass(String className, DeploymentId deploymentId, IApplicationContext appCtx)
             throws HyracksException {
         try {
@@ -83,6 +147,14 @@
         }
     }
 
+    /**
+     * Get the classloader of a specific deployment
+     * 
+     * @param deploymentId
+     * @param appCtx
+     * @return
+     * @throws HyracksException
+     */
     public static ClassLoader getClassLoader(DeploymentId deploymentId, IApplicationContext appCtx)
             throws HyracksException {
         try {
@@ -96,6 +168,18 @@
         }
     }
 
+    /**
+     * Download remote Http URLs and return the stored local file URLs
+     * 
+     * @param urls
+     *            the remote Http URLs
+     * @param deploymentDir
+     *            the deployment jar storage directory
+     * @param isNC
+     *            true is NC/false is CC
+     * @return a list of local file URLs
+     * @throws HyracksException
+     */
     private static List<URL> downloadURLs(List<URL> urls, String deploymentDir, boolean isNC) throws HyracksException {
         try {
             List<URL> downloadedFileURLs = new ArrayList<URL>();
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/IDeploymentStatusConditionVariable.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/IDeploymentStatusConditionVariable.java
index 06e398e..771baaa 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/IDeploymentStatusConditionVariable.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/deployment/IDeploymentStatusConditionVariable.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2009-2010 by The Regents of the University of California
+ * Copyright 2009-2013 by The Regents of the University of California
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * you may obtain a copy of the License from
@@ -15,7 +15,18 @@
 
 package edu.uci.ics.hyracks.control.common.deployment;
 
+/**
+ * The conditional variable interface for deployment
+ * 
+ * @author yingyib
+ */
 public interface IDeploymentStatusConditionVariable {
 
+    /**
+     * synchronously wait the deployment to complete
+     * 
+     * @return the deployment status
+     * @throws Exception
+     */
     public DeploymentStatus waitForCompletion() throws Exception;
 }
diff --git a/hyracks/hyracks-control/hyracks-control-nc/pom.xml b/hyracks/hyracks-control/hyracks-control-nc/pom.xml
index ad83d86..f554523 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/pom.xml
+++ b/hyracks/hyracks-control/hyracks-control-nc/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-control</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -26,19 +26,19 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-net</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-comm</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   	</dependency>
   </dependencies>
   <reporting>
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/DeployBinaryWork.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/DeployBinaryWork.java
index 4f613a1..e5f1bc1 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/DeployBinaryWork.java
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/DeployBinaryWork.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package edu.uci.ics.hyracks.control.nc.work;
 
 import java.net.URL;
@@ -10,6 +25,12 @@
 import edu.uci.ics.hyracks.control.common.work.AbstractWork;
 import edu.uci.ics.hyracks.control.nc.NodeControllerService;
 
+/**
+ * Deploy binary work that happens at each NC
+ * 
+ * @author yingyib
+ *
+ */
 public class DeployBinaryWork extends AbstractWork {
 
     private DeploymentId deploymentId;
@@ -24,11 +45,18 @@
 
     @Override
     public void run() {
+        DeploymentStatus status;
         try {
             DeploymentUtils.deploy(deploymentId, binaryURLs, ncs.getApplicationContext()
                     .getJobSerializerDeserializerContainer(), ncs.getServerContext(), true);
+            status = DeploymentStatus.SUCCEED;
+        } catch (Exception e) {
+            status = DeploymentStatus.FAIL;
+            e.printStackTrace();
+        }
+        try {
             IClusterController ccs = ncs.getClusterController();
-            ccs.notifyDeployBinary(deploymentId, ncs.getId(), DeploymentStatus.SUCCEED);
+            ccs.notifyDeployBinary(deploymentId, ncs.getId(), status);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/UnDeployBinaryWork.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/UnDeployBinaryWork.java
index bd77fb5..605d63f 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/UnDeployBinaryWork.java
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/UnDeployBinaryWork.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package edu.uci.ics.hyracks.control.nc.work;
 
 import edu.uci.ics.hyracks.api.deployment.DeploymentId;
@@ -7,6 +22,11 @@
 import edu.uci.ics.hyracks.control.common.work.AbstractWork;
 import edu.uci.ics.hyracks.control.nc.NodeControllerService;
 
+/**
+ * undeploy binaries regarding to a deployment id
+ * 
+ * @author yingyib
+ */
 public class UnDeployBinaryWork extends AbstractWork {
 
     private DeploymentId deploymentId;
@@ -19,11 +39,17 @@
 
     @Override
     public void run() {
+        DeploymentStatus status;
         try {
             DeploymentUtils.undeploy(deploymentId, ncs.getApplicationContext().getJobSerializerDeserializerContainer(),
                     ncs.getServerContext());
+            status = DeploymentStatus.SUCCEED;
+        } catch (Exception e) {
+            status = DeploymentStatus.FAIL;
+        }
+        try {
             IClusterController ccs = ncs.getClusterController();
-            ccs.notifyDeployBinary(deploymentId, ncs.getId(), DeploymentStatus.SUCCEED);
+            ccs.notifyDeployBinary(deploymentId, ncs.getId(), status);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
diff --git a/hyracks/hyracks-control/pom.xml b/hyracks/hyracks-control/pom.xml
index 5696ffe..9141bf5 100644
--- a/hyracks/hyracks-control/pom.xml
+++ b/hyracks/hyracks-control/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/hyracks/hyracks-data/hyracks-data-std/pom.xml b/hyracks/hyracks-data/hyracks-data-std/pom.xml
index 9152d0d..b71548a 100644
--- a/hyracks/hyracks-data/hyracks-data-std/pom.xml
+++ b/hyracks/hyracks-data/hyracks-data-std/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-data</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,7 +27,7 @@
   <dependency>
   	<groupId>edu.uci.ics.hyracks</groupId>
   	<artifactId>hyracks-api</artifactId>
-  	<version>0.2.5-SNAPSHOT</version>
+  	<version>0.2.6-SNAPSHOT</version>
   </dependency>
   </dependencies>
 </project>
diff --git a/hyracks/hyracks-data/pom.xml b/hyracks/hyracks-data/pom.xml
index 2af86c9..0df5325 100644
--- a/hyracks/hyracks-data/pom.xml
+++ b/hyracks/hyracks-data/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/hyracks/hyracks-dataflow-common/pom.xml b/hyracks/hyracks-dataflow-common/pom.xml
index 4afb088..a87336d 100644
--- a/hyracks/hyracks-dataflow-common/pom.xml
+++ b/hyracks/hyracks-dataflow-common/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -26,14 +26,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-data-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   	</dependency>
   </dependencies>
 </project>
diff --git a/hyracks/hyracks-dataflow-hadoop/pom.xml b/hyracks/hyracks-dataflow-hadoop/pom.xml
index 3947387..657f6db 100644
--- a/hyracks/hyracks-dataflow-hadoop/pom.xml
+++ b/hyracks/hyracks-dataflow-hadoop/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -26,14 +26,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
@@ -53,7 +53,7 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   </dependencies>
diff --git a/hyracks/hyracks-dataflow-std/pom.xml b/hyracks/hyracks-dataflow-std/pom.xml
index db4f452..56046f7 100644
--- a/hyracks/hyracks-dataflow-std/pom.xml
+++ b/hyracks/hyracks-dataflow-std/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,14 +27,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-dist/pom.xml b/hyracks/hyracks-dist/pom.xml
index d600fd8..2dcd0ed 100755
--- a/hyracks/hyracks-dist/pom.xml
+++ b/hyracks/hyracks-dist/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>hyracks</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hyracks-dist</artifactId>
diff --git a/hyracks/hyracks-documentation/pom.xml b/hyracks/hyracks-documentation/pom.xml
index 6473cc8..958bd71 100644
--- a/hyracks/hyracks-documentation/pom.xml
+++ b/hyracks/hyracks-documentation/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml b/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
index f7698be..b2c1779 100644
--- a/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
+++ b/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
@@ -6,26 +6,26 @@
   <parent>
     <groupId>edu.uci.ics.hyracks.examples</groupId>
     <artifactId>btree-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <dependencies>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-btree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks.examples.btree</groupId>
   		<artifactId>btreehelper</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-examples/btree-example/btreehelper/pom.xml b/hyracks/hyracks-examples/btree-example/btreehelper/pom.xml
index 637612d..b394a88 100644
--- a/hyracks/hyracks-examples/btree-example/btreehelper/pom.xml
+++ b/hyracks/hyracks-examples/btree-example/btreehelper/pom.xml
@@ -6,32 +6,32 @@
   <parent>
     <groupId>edu.uci.ics.hyracks.examples</groupId>
     <artifactId>btree-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <dependencies>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-btree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-data-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   	</dependency>
   </dependencies>
   <build>
diff --git a/hyracks/hyracks-examples/btree-example/btreeserver/pom.xml b/hyracks/hyracks-examples/btree-example/btreeserver/pom.xml
index ead4e89..c70578e 100644
--- a/hyracks/hyracks-examples/btree-example/btreeserver/pom.xml
+++ b/hyracks/hyracks-examples/btree-example/btreeserver/pom.xml
@@ -2,13 +2,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>edu.uci.ics.hyracks.examples.btree</groupId>
   <artifactId>btreeserver</artifactId>
-  <version>0.2.5-SNAPSHOT</version>
+  <version>0.2.6-SNAPSHOT</version>
   <name>btreeserver</name>
 
   <parent>
     <groupId>edu.uci.ics.hyracks.examples</groupId>
     <artifactId>btree-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -63,20 +63,20 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks.examples.btree</groupId>
   		<artifactId>btreehelper</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-cc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-nc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-examples/btree-example/pom.xml b/hyracks/hyracks-examples/btree-example/pom.xml
index ce0a486..7332d0e 100644
--- a/hyracks/hyracks-examples/btree-example/pom.xml
+++ b/hyracks/hyracks-examples/btree-example/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
index e618295..acf2dbf 100644
--- a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
+++ b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
@@ -7,20 +7,20 @@
   <parent>
     <groupId>edu.uci.ics.hyracks.examples</groupId>
     <artifactId>hadoop-compat-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <dependencies>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks.examples.compat</groupId>
   		<artifactId>hadoopcompathelper</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompathelper/pom.xml b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompathelper/pom.xml
index 5f7f072..94f43df 100644
--- a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompathelper/pom.xml
+++ b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompathelper/pom.xml
@@ -7,20 +7,20 @@
   <parent>
     <groupId>edu.uci.ics.hyracks.examples</groupId>
     <artifactId>hadoop-compat-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <dependencies>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   </dependencies>
diff --git a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatserver/pom.xml b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatserver/pom.xml
index 6536606..e545663 100644
--- a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatserver/pom.xml
+++ b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatserver/pom.xml
@@ -2,13 +2,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>edu.uci.ics.hyracks.examples.compat</groupId>
   <artifactId>hadoopcompatserver</artifactId>
-  <version>0.2.5-SNAPSHOT</version>
+  <version>0.2.6-SNAPSHOT</version>
   <name>hadoopcompatserver</name>
 
   <parent>
     <groupId>edu.uci.ics.hyracks.examples</groupId>
     <artifactId>hadoop-compat-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -60,7 +60,7 @@
       <plugin>
       	<groupId>edu.uci.ics.hyracks</groupId>
       	<artifactId>hyracks-virtualcluster-maven-plugin</artifactId>
-      	<version>0.2.5-SNAPSHOT</version>
+      	<version>0.2.6-SNAPSHOT</version>
         <configuration>
           <hyracksServerHome>${basedir}/target/hadoopcompatserver-${project.version}-binary-assembly</hyracksServerHome>
           <jvmOptions>${jvm.extraargs}</jvmOptions>
@@ -136,27 +136,27 @@
      <dependency>
         <groupId>edu.uci.ics.hyracks.examples.compat</groupId>
         <artifactId>hadoopcompathelper</artifactId>
-        <version>0.2.5-SNAPSHOT</version>
+        <version>0.2.6-SNAPSHOT</version>
         <scope>compile</scope>
      </dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-cc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-nc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
      <dependency>
         <groupId>edu.uci.ics.hyracks.examples.compat</groupId>
   	    <artifactId>hadoopcompatclient</artifactId>
-  	    <version>0.2.5-SNAPSHOT</version>
+  	    <version>0.2.6-SNAPSHOT</version>
   	    <type>jar</type>
   	    <scope>test</scope>
      </dependency>
diff --git a/hyracks/hyracks-examples/hadoop-compat-example/pom.xml b/hyracks/hyracks-examples/hadoop-compat-example/pom.xml
index 980e800..e927a1c 100644
--- a/hyracks/hyracks-examples/hadoop-compat-example/pom.xml
+++ b/hyracks/hyracks-examples/hadoop-compat-example/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
@@ -29,7 +29,7 @@
       <dependency>
          <groupId>edu.uci.ics.hyracks</groupId>
          <artifactId>hyracks-hadoop-compat</artifactId>
-         <version>0.2.5-SNAPSHOT</version>
+         <version>0.2.6-SNAPSHOT</version>
          <type>jar</type>
          <scope>compile</scope>
       </dependency>
diff --git a/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml b/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
index 7c38b13..08ff5e2 100644
--- a/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
+++ b/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>hyracks-examples</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 	<build>
 		<plugins>
@@ -32,75 +32,75 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-btree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-rtree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-lsm-btree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-lsm-rtree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-lsm-invertedindex</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-test-support</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-data-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 		</dependency>
   	    <dependency>
             <groupId>edu.uci.ics.hyracks</groupId>
             <artifactId>hyracks-client</artifactId>
-            <version>0.2.5-SNAPSHOT</version>
+            <version>0.2.6-SNAPSHOT</version>
             <type>jar</type>
             <scope>compile</scope>
         </dependency>
diff --git a/hyracks/hyracks-examples/pom.xml b/hyracks/hyracks-examples/pom.xml
index a47cb9c..6159b49 100644
--- a/hyracks/hyracks-examples/pom.xml
+++ b/hyracks/hyracks-examples/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/hyracks/hyracks-examples/text-example/pom.xml b/hyracks/hyracks-examples/text-example/pom.xml
index ee75f31..54aa3be 100644
--- a/hyracks/hyracks-examples/text-example/pom.xml
+++ b/hyracks/hyracks-examples/text-example/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/hyracks/hyracks-examples/text-example/textclient/pom.xml b/hyracks/hyracks-examples/text-example/textclient/pom.xml
index 7bf1c44..b2b7dbb 100644
--- a/hyracks/hyracks-examples/text-example/textclient/pom.xml
+++ b/hyracks/hyracks-examples/text-example/textclient/pom.xml
@@ -6,20 +6,20 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>text-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <dependencies>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>texthelper</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-examples/text-example/texthelper/pom.xml b/hyracks/hyracks-examples/text-example/texthelper/pom.xml
index c948242..c20ba88 100644
--- a/hyracks/hyracks-examples/text-example/texthelper/pom.xml
+++ b/hyracks/hyracks-examples/text-example/texthelper/pom.xml
@@ -6,26 +6,26 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>text-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <dependencies>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-data-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   	</dependency>
   </dependencies>
   <build>
diff --git a/hyracks/hyracks-examples/text-example/textserver/pom.xml b/hyracks/hyracks-examples/text-example/textserver/pom.xml
index d409203..0ee6e0a 100644
--- a/hyracks/hyracks-examples/text-example/textserver/pom.xml
+++ b/hyracks/hyracks-examples/text-example/textserver/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>text-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -59,7 +59,7 @@
       <plugin>
       	<groupId>edu.uci.ics.hyracks</groupId>
       	<artifactId>hyracks-virtualcluster-maven-plugin</artifactId>
-      	<version>0.2.5-SNAPSHOT</version>
+      	<version>0.2.6-SNAPSHOT</version>
         <configuration>
           <hyracksServerHome>${basedir}/target/textserver-${project.version}-binary-assembly</hyracksServerHome>
           <jvmOptions>${jvm.extraargs}</jvmOptions>
@@ -135,27 +135,27 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>texthelper</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-cc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-nc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>textclient</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>test</scope>
   	</dependency>
diff --git a/hyracks/hyracks-examples/tpch-example/pom.xml b/hyracks/hyracks-examples/tpch-example/pom.xml
index f8acd8d..68577a0 100644
--- a/hyracks/hyracks-examples/tpch-example/pom.xml
+++ b/hyracks/hyracks-examples/tpch-example/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml b/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
index 9f08f0c..127d0f1 100644
--- a/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
@@ -5,20 +5,20 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>tpch-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <dependencies>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-data-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   	</dependency>
   </dependencies>
   <build>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchserver/pom.xml b/hyracks/hyracks-examples/tpch-example/tpchserver/pom.xml
index 6b97078..fb45c3b 100644
--- a/hyracks/hyracks-examples/tpch-example/tpchserver/pom.xml
+++ b/hyracks/hyracks-examples/tpch-example/tpchserver/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>tpch-example</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -62,25 +62,25 @@
     <dependency>
         <groupId>edu.uci.ics.hyracks</groupId>
         <artifactId>hyracks-dataflow-std</artifactId>
-        <version>0.2.5-SNAPSHOT</version>
+        <version>0.2.6-SNAPSHOT</version>
         <scope>compile</scope>
     </dependency>
     <dependency>
     	<groupId>edu.uci.ics.hyracks</groupId>
     	<artifactId>hyracks-data-std</artifactId>
-    	<version>0.2.5-SNAPSHOT</version>
+    	<version>0.2.6-SNAPSHOT</version>
     </dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-cc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-nc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-hadoop-compat/pom.xml b/hyracks/hyracks-hadoop-compat/pom.xml
index 88082af..f9b1b3a 100644
--- a/hyracks/hyracks-hadoop-compat/pom.xml
+++ b/hyracks/hyracks-hadoop-compat/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -80,7 +80,7 @@
     <dependency>
     	<groupId>edu.uci.ics.hyracks</groupId>
     	<artifactId>hyracks-dataflow-hadoop</artifactId>
-    	<version>0.2.5-SNAPSHOT</version>
+    	<version>0.2.6-SNAPSHOT</version>
     	<type>jar</type>
     	<scope>compile</scope>
     </dependency>
diff --git a/hyracks/hyracks-hdfs/hyracks-hdfs-0.20.2/pom.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-0.20.2/pom.xml
index dd26f1e..39f064f 100644
--- a/hyracks/hyracks-hdfs/hyracks-hdfs-0.20.2/pom.xml
+++ b/hyracks/hyracks-hdfs/hyracks-hdfs-0.20.2/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<artifactId>hyracks-hdfs</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<build>
@@ -98,7 +98,7 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/hyracks/hyracks-hdfs/hyracks-hdfs-0.23.1/pom.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-0.23.1/pom.xml
index d0f11eb..fd8b1c5 100644
--- a/hyracks/hyracks-hdfs/hyracks-hdfs-0.23.1/pom.xml
+++ b/hyracks/hyracks-hdfs/hyracks-hdfs-0.23.1/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<artifactId>hyracks-hdfs</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 	<build>
 		<plugins>
@@ -202,7 +202,7 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/hyracks/hyracks-hdfs/hyracks-hdfs-core/pom.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-core/pom.xml
index 5de9f37..bec0d34 100644
--- a/hyracks/hyracks-hdfs/hyracks-hdfs-core/pom.xml
+++ b/hyracks/hyracks-hdfs/hyracks-hdfs-core/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>hyracks-hdfs</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<build>
@@ -191,31 +191,31 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/hyracks/hyracks-hdfs/pom.xml b/hyracks/hyracks-hdfs/pom.xml
index e3ada06..b8cb5fe 100644
--- a/hyracks/hyracks-hdfs/pom.xml
+++ b/hyracks/hyracks-hdfs/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/hyracks/hyracks-ipc/pom.xml b/hyracks/hyracks-ipc/pom.xml
index 1368e20..d76aa56 100644
--- a/hyracks/hyracks-ipc/pom.xml
+++ b/hyracks/hyracks-ipc/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/pom.xml b/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/pom.xml
index c0a9c45..3a84622 100644
--- a/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/pom.xml
+++ b/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-maven-plugins</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks/hyracks-maven-plugins/pom.xml b/hyracks/hyracks-maven-plugins/pom.xml
index 08bbb2c..39338e7 100644
--- a/hyracks/hyracks-maven-plugins/pom.xml
+++ b/hyracks/hyracks-maven-plugins/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <dependencies>
diff --git a/hyracks/hyracks-net/pom.xml b/hyracks/hyracks-net/pom.xml
index 9dde9a1..b82a88a 100644
--- a/hyracks/hyracks-net/pom.xml
+++ b/hyracks/hyracks-net/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks/hyracks-server/pom.xml b/hyracks/hyracks-server/pom.xml
index e32b658..bdf8db6 100644
--- a/hyracks/hyracks-server/pom.xml
+++ b/hyracks/hyracks-server/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -74,14 +74,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-cc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-nc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-storage-am-bloomfilter/pom.xml b/hyracks/hyracks-storage-am-bloomfilter/pom.xml
index 76c64d8..3c3f14b 100644
--- a/hyracks/hyracks-storage-am-bloomfilter/pom.xml
+++ b/hyracks/hyracks-storage-am-bloomfilter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,7 +25,7 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  	
diff --git a/hyracks/hyracks-storage-am-btree/pom.xml b/hyracks/hyracks-storage-am-btree/pom.xml
index 201d597..a337609 100644
--- a/hyracks/hyracks-storage-am-btree/pom.xml
+++ b/hyracks/hyracks-storage-am-btree/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,28 +27,28 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  	
         <dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  	
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  	
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  	
diff --git a/hyracks/hyracks-storage-am-common/pom.xml b/hyracks/hyracks-storage-am-common/pom.xml
index 0175467..2a537a1 100644
--- a/hyracks/hyracks-storage-am-common/pom.xml
+++ b/hyracks/hyracks-storage-am-common/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,28 +27,28 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/api/ISearchOperationCallback.java b/hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/api/ISearchOperationCallback.java
index b62bbcb..62d5054 100644
--- a/hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/api/ISearchOperationCallback.java
+++ b/hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/api/ISearchOperationCallback.java
@@ -42,4 +42,14 @@
      * @param tuple the tuple that was previously reconciled
      */
     public void cancel(ITupleReference tuple) throws HyracksDataException;
+    
+    /**
+     * This method is only called on a tuple that was reconciled on, and found after
+     * retraversing. This method allows an opportunity to do some subsequent action that was 
+     * taken in {@link #reconcile(ITupleReference))}.
+     * 
+     * @param tuple
+     *            the tuple that was previously reconciled
+     */
+    public void complete(ITupleReference tuple) throws HyracksDataException;
 }
diff --git a/hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/impls/NoOpOperationCallback.java b/hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/impls/NoOpOperationCallback.java
index 6fc8dcf..8178101 100644
--- a/hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/impls/NoOpOperationCallback.java
+++ b/hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/impls/NoOpOperationCallback.java
@@ -15,6 +15,7 @@
 
 package edu.uci.ics.hyracks.storage.am.common.impls;
 
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;
 import edu.uci.ics.hyracks.storage.am.common.api.IModificationOperationCallback;
 import edu.uci.ics.hyracks.storage.am.common.api.ISearchOperationCallback;
@@ -49,4 +50,9 @@
     public void cancel(ITupleReference tuple) {
         // Do nothing.
     }
+
+    @Override
+    public void complete(ITupleReference tuple) throws HyracksDataException {
+        // Do nothing.
+    }
 }
diff --git a/hyracks/hyracks-storage-am-lsm-btree/pom.xml b/hyracks/hyracks-storage-am-lsm-btree/pom.xml
index 6c4ffd3..29c2ab3 100644
--- a/hyracks/hyracks-storage-am-lsm-btree/pom.xml
+++ b/hyracks/hyracks-storage-am-lsm-btree/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,21 +25,21 @@
     <dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-btree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency> 
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-bloomfilter</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency> 
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-lsm-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  	
diff --git a/hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/impls/LSMBTreePointSearchCursor.java b/hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/impls/LSMBTreePointSearchCursor.java
index 0204833..5736200 100644
--- a/hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/impls/LSMBTreePointSearchCursor.java
+++ b/hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/impls/LSMBTreePointSearchCursor.java
@@ -91,6 +91,7 @@
 
                     // retraverse
                     memBTreeAccessor.search(rangeCursors[i], predicate);
+                    searchCallback.complete(predicate.getLowKey());
                     if (rangeCursors[i].hasNext()) {
                         rangeCursors[i].next();
                         if (((ILSMTreeTupleReference) rangeCursors[i].getTuple()).isAntimatter()) {
@@ -108,6 +109,7 @@
                 } else {
                     frameTuple = rangeCursors[i].getTuple();
                     searchCallback.reconcile(frameTuple);
+                    searchCallback.complete(frameTuple);
                     foundTuple = true;
                     return true;
                 }
diff --git a/hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/impls/LSMBTreeRangeSearchCursor.java b/hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/impls/LSMBTreeRangeSearchCursor.java
index 4255dbf..2923c53 100644
--- a/hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/impls/LSMBTreeRangeSearchCursor.java
+++ b/hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/impls/LSMBTreeRangeSearchCursor.java
@@ -101,14 +101,20 @@
                                 searchCallback.reconcile(copyTuple);
                             } else {
                                 searchCallback.reconcile(checkElement.getTuple());
+                                searchCallback.complete(checkElement.getTuple());
                             }
                             // retraverse
                             reusablePred.setLowKey(copyTuple, true);
                             memBTreeAccessor.search(rangeCursors[0], reusablePred);
-                            pushIntoPriorityQueue(inMemElement);
-                            if (cmp.compare(copyTuple, inMemElement.getTuple()) != 0) {
-                                searchCallback.cancel(copyTuple);
-                                continue;
+                            boolean isNotExhaustedCursor = pushIntoPriorityQueue(inMemElement);
+                            
+                            if (checkElement.getCursorIndex() == 0) {
+                                if (!isNotExhaustedCursor || cmp.compare(copyTuple, inMemElement.getTuple()) != 0) {
+                                    searchCallback.complete(copyTuple);
+                                    searchCallback.cancel(copyTuple);
+                                    continue;
+                                }
+                                searchCallback.complete(copyTuple);
                             }
                         } else {
                             // the in-memory cursor is exhausted
@@ -211,4 +217,4 @@
         initPriorityQueue();
         proceed = true;
     }
-}
\ No newline at end of file
+}
diff --git a/hyracks/hyracks-storage-am-lsm-common/pom.xml b/hyracks/hyracks-storage-am-lsm-common/pom.xml
index e4d2040..715ec27 100644
--- a/hyracks/hyracks-storage-am-lsm-common/pom.xml
+++ b/hyracks/hyracks-storage-am-lsm-common/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,21 +25,21 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-bloomfilter</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-btree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  	
diff --git a/hyracks/hyracks-storage-am-lsm-invertedindex/pom.xml b/hyracks/hyracks-storage-am-lsm-invertedindex/pom.xml
index 1aa5302..5a056a2 100644
--- a/hyracks/hyracks-storage-am-lsm-invertedindex/pom.xml
+++ b/hyracks/hyracks-storage-am-lsm-invertedindex/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<artifactId>hyracks</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
@@ -26,14 +26,14 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-btree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-lsm-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 	    </dependency>
diff --git a/hyracks/hyracks-storage-am-lsm-rtree/pom.xml b/hyracks/hyracks-storage-am-lsm-rtree/pom.xml
index a345ee5..f842b44 100644
--- a/hyracks/hyracks-storage-am-lsm-rtree/pom.xml
+++ b/hyracks/hyracks-storage-am-lsm-rtree/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,21 +25,21 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-lsm-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-btree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-rtree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  		
diff --git a/hyracks/hyracks-storage-am-rtree/pom.xml b/hyracks/hyracks-storage-am-rtree/pom.xml
index d73ce00..af5e922 100644
--- a/hyracks/hyracks-storage-am-rtree/pom.xml
+++ b/hyracks/hyracks-storage-am-rtree/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,21 +27,21 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-storage-common/pom.xml b/hyracks/hyracks-storage-common/pom.xml
index bde1ac4..3ee262d 100644
--- a/hyracks/hyracks-storage-common/pom.xml
+++ b/hyracks/hyracks-storage-common/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,7 +27,7 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-api</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-test-support/pom.xml b/hyracks/hyracks-test-support/pom.xml
index 623edc4..217a9a4 100644
--- a/hyracks/hyracks-test-support/pom.xml
+++ b/hyracks/hyracks-test-support/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -27,33 +27,33 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-control-nc</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-btree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-rtree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-lsm-invertedindex</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/AbstractSearchOperationCallbackTest.java b/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/AbstractSearchOperationCallbackTest.java
index ffa7c9a..63e320d 100644
--- a/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/AbstractSearchOperationCallbackTest.java
+++ b/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/AbstractSearchOperationCallbackTest.java
@@ -172,6 +172,11 @@
                 }
             }
 
+            @Override
+            public void complete(ITupleReference tuple) throws HyracksDataException {
+
+            }
+
         }
     }
 
diff --git a/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TestOperationCallback.java b/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TestOperationCallback.java
index 04f888b..2a803d3 100644
--- a/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TestOperationCallback.java
+++ b/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TestOperationCallback.java
@@ -2,6 +2,7 @@
 
 import java.util.Random;
 
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;
 import edu.uci.ics.hyracks.storage.am.common.api.IModificationOperationCallback;
 import edu.uci.ics.hyracks.storage.am.common.api.ISearchOperationCallback;
@@ -42,4 +43,9 @@
         // Do nothing.
     }
 
+    @Override
+    public void complete(ITupleReference tuple) throws HyracksDataException {
+        // Do nothing.
+    }
+
 }
diff --git a/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/pom.xml b/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/pom.xml
index edf9d08..aa2238f 100644
--- a/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/pom.xml
+++ b/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -32,14 +32,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-bloomfilter</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-test-support</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>test</scope>
   	</dependency>
diff --git a/hyracks/hyracks-tests/hyracks-storage-am-btree-test/pom.xml b/hyracks/hyracks-tests/hyracks-storage-am-btree-test/pom.xml
index bfb2d61..8e7df1d 100644
--- a/hyracks/hyracks-tests/hyracks-storage-am-btree-test/pom.xml
+++ b/hyracks/hyracks-tests/hyracks-storage-am-btree-test/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -34,14 +34,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-btree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-test-support</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>test</scope>
   	</dependency>
diff --git a/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml b/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
index f687212..35ab780 100644
--- a/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
+++ b/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,20 +25,20 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-lsm-btree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>  	
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-test-support</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   </dependencies>
diff --git a/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/LSMBTreeSearchOperationCallbackTest.java b/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/LSMBTreeSearchOperationCallbackTest.java
index 389c87f..41d7ae8 100644
--- a/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/LSMBTreeSearchOperationCallbackTest.java
+++ b/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/LSMBTreeSearchOperationCallbackTest.java
@@ -164,10 +164,6 @@
                     condition.awaitUninterruptibly();
                     blockOnHigh = false;
                 }
-                expectedTupleToBeLockedValue++;
-                TupleUtils.createIntegerTuple(expectedTupleToBeLockedBuilder, expectedTupleToBeLocked,
-                        expectedTupleToBeLockedValue);
-
             }
 
             @Override
@@ -183,6 +179,14 @@
                 Assert.assertTrue(found);
             }
 
+            @Override
+            public void complete(ITupleReference tuple) throws HyracksDataException {
+                Assert.assertEquals(0, cmp.compare(SearchTask.this.expectedTupleToBeLocked, tuple));
+                expectedTupleToBeLockedValue++;
+                TupleUtils.createIntegerTuple(expectedTupleToBeLockedBuilder, expectedTupleToBeLocked,
+                        expectedTupleToBeLockedValue);
+            }
+
         }
     }
 
diff --git a/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/pom.xml b/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/pom.xml
index 68b432b..7508f7c 100644
--- a/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/pom.xml
+++ b/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,14 +25,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-lsm-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-test-support</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/pom.xml b/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/pom.xml
index 273b90f..be0bb6f 100644
--- a/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/pom.xml
+++ b/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<artifactId>hyracks-tests</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
@@ -26,21 +26,21 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-lsm-invertedindex</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-test-support</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-data-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>test</scope>
 		</dependency>
diff --git a/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/pom.xml b/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/pom.xml
index a39fd3a..95332a7 100644
--- a/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/pom.xml
+++ b/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -25,14 +25,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-lsm-rtree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-test-support</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/pom.xml b/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/pom.xml
index b9b0cc3..14adffb 100644
--- a/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/pom.xml
+++ b/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -34,14 +34,14 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-am-rtree</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-test-support</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>test</scope>
   	</dependency>
diff --git a/hyracks/hyracks-tests/hyracks-storage-common-test/pom.xml b/hyracks/hyracks-tests/hyracks-storage-common-test/pom.xml
index 7abf086..7f69d25 100644
--- a/hyracks/hyracks-tests/hyracks-storage-common-test/pom.xml
+++ b/hyracks/hyracks-tests/hyracks-storage-common-test/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <build>
@@ -34,13 +34,13 @@
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-storage-common</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-test-support</artifactId>
-  		<version>0.2.5-SNAPSHOT</version>
+  		<version>0.2.6-SNAPSHOT</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
diff --git a/hyracks/hyracks-tests/pom.xml b/hyracks/hyracks-tests/pom.xml
index 38ddadc..d61209e 100644
--- a/hyracks/hyracks-tests/pom.xml
+++ b/hyracks/hyracks-tests/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>edu.uci.ics.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.5-SNAPSHOT</version>
+    <version>0.2.6-SNAPSHOT</version>
   </parent>
 
   <modules>
diff --git a/hyracks/pom.xml b/hyracks/pom.xml
index 7972b10..4eccb73 100644
--- a/hyracks/pom.xml
+++ b/hyracks/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>edu.uci.ics.hyracks</groupId>
   <artifactId>hyracks</artifactId>
-  <version>0.2.5-SNAPSHOT</version>
+  <version>0.2.6-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>hyracks</name>
 
diff --git a/pom.xml b/pom.xml
index 2933182..1c20cc8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>edu.uci.ics.hyracks</groupId>
   <artifactId>fullstack</artifactId>
-  <version>0.2.5-SNAPSHOT</version>
+  <version>0.2.6-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>hyracks-ecosystem-full-stack</name>
 
@@ -26,9 +26,9 @@
   </build>
 
   <scm>
-    <connection>scm:svn:https://hyracks.googlecode.com/svn/trunk/fullstack</connection>
-    <developerConnection>scm:svn:https://hyracks.googlecode.com/svn/trunk/fullstack</developerConnection>
-    <url>http://code.google.com/p/hyracks/source/browse/#svn/trunk/fullstack</url>
+    <connection>scm:git:https://vinayakb@code.google.com/p/hyracks/</connection>
+    <developerConnection>scm:git:https://vinayakb@code.google.com/p/hyracks/</developerConnection>
+    <url>https://code.google.com/p/hyracks/source/browse/</url>
   </scm>
 
   <distributionManagement>
diff --git a/pregelix/pom.xml b/pregelix/pom.xml
index 46fe7e6..bb2b336 100644
--- a/pregelix/pom.xml
+++ b/pregelix/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>edu.uci.ics.hyracks</groupId>
   <artifactId>pregelix</artifactId>
-  <version>0.2.5-SNAPSHOT</version>
+  <version>0.2.6-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>pregelix</name>
 
diff --git a/pregelix/pregelix-api/pom.xml b/pregelix/pregelix-api/pom.xml
index d8a49e0..c997ec8 100644
--- a/pregelix/pregelix-api/pom.xml
+++ b/pregelix/pregelix-api/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>pregelix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<properties>
@@ -68,7 +68,7 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
@@ -81,7 +81,7 @@
 		<dependency>
                         <groupId>edu.uci.ics.hyracks</groupId>
                         <artifactId>hyracks-hdfs-core</artifactId>
-                        <version>0.2.5-SNAPSHOT</version>
+                        <version>0.2.6-SNAPSHOT</version>
                         <type>jar</type>
                         <scope>compile</scope>
                 </dependency>
diff --git a/pregelix/pregelix-core/pom.xml b/pregelix/pregelix-core/pom.xml
index 39fc396..d229dc7 100644
--- a/pregelix/pregelix-core/pom.xml
+++ b/pregelix/pregelix-core/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>pregelix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 
@@ -195,84 +195,84 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-dataflow-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-dataflow</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-runtime</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-data-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-btree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
@@ -286,7 +286,7 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks.examples</groupId>
 			<artifactId>hyracks-integration-tests</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -306,7 +306,7 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-ipc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/pregelix/pregelix-core/src/main/java/edu/uci/ics/pregelix/core/driver/Driver.java b/pregelix/pregelix-core/src/main/java/edu/uci/ics/pregelix/core/driver/Driver.java
index a309529..3a344d9 100644
--- a/pregelix/pregelix-core/src/main/java/edu/uci/ics/pregelix/core/driver/Driver.java
+++ b/pregelix/pregelix-core/src/main/java/edu/uci/ics/pregelix/core/driver/Driver.java
@@ -66,7 +66,6 @@
     @Override
     public void runJob(PregelixJob job, Plan planChoice, String ipAddress, int port, boolean profiling)
             throws HyracksException {
-        DeploymentId deploymentId = null;
         try {
             /** add hadoop configurations */
             URL hadoopCore = job.getClass().getClassLoader().getResource("core-site.xml");
@@ -116,7 +115,7 @@
             for (URL url : urls)
                 if (url.toString().endsWith(".jar"))
                     jars.add(new File(url.getPath()));
-            deploymentId = installApplication(jars);
+            DeploymentId deploymentId = installApplication(jars);
 
             start = System.currentTimeMillis();
             FileSystem dfs = FileSystem.get(job.getConfiguration());
diff --git a/pregelix/pregelix-core/src/main/resources/conf/cluster.properties b/pregelix/pregelix-core/src/main/resources/conf/cluster.properties
index 2d2401a..056cce4 100644
--- a/pregelix/pregelix-core/src/main/resources/conf/cluster.properties
+++ b/pregelix/pregelix-core/src/main/resources/conf/cluster.properties
@@ -4,9 +4,6 @@
 #The CC port for Hyracks cluster management
 CC_CLUSTERPORT=1099
 
-#The directory of hyracks binaries
-HYRACKS_HOME=../../../../hyracks
-
 #The tmp directory for cc to install jars
 CCTMP_DIR=/tmp/t1
 
@@ -29,9 +26,11 @@
 FRAME_SIZE=65536
 
 #CC JAVA_OPTS
-CCJAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=7001,server=y,suspend=n -Xmx1g -Djava.util.logging.config.file=logging.properties"
+CCJAVA_OPTS="-Xmx1g -Djava.util.logging.config.file=logging.properties"
+# debug option: CCJAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=7001,server=y,suspend=n -Xmx1g -Djava.util.logging.config.file=logging.properties"
 # Yourkit option: -agentpath:/grid/0/dev/vborkar/tools/yjp-10.0.4/bin/linux-x86-64/libyjpagent.so=port=20001"
 
 #NC JAVA_OPTS
-NCJAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=7002,server=y,suspend=n -Xmx1g -Djava.util.logging.config.file=logging.properties"
-
+NCJAVA_OPTS="-Xmx1g -Djava.util.logging.config.file=logging.properties"
+# debug option: NCJAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=7002,server=y,suspend=n -Xmx1g -Djava.util.logging.config.file=logging.properties"
+# Yourkit option: -agentpath:/grid/0/dev/vborkar/tools/yjp-10.0.4/bin/linux-x86-64/libyjpagent.so=port=20001"
diff --git a/pregelix/pregelix-core/src/main/resources/hyracks-deployment.properties b/pregelix/pregelix-core/src/main/resources/hyracks-deployment.properties
deleted file mode 100644
index d5d7cd0..0000000
--- a/pregelix/pregelix-core/src/main/resources/hyracks-deployment.properties
+++ /dev/null
@@ -1 +0,0 @@
-nc.bootstrap.class=edu.uci.ics.pregelix.runtime.bootstrap.NCBootstrapImpl
\ No newline at end of file
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/getip.sh b/pregelix/pregelix-core/src/main/resources/scripts/getip.sh
index a691c0f..1b44d09 100755
--- a/pregelix/pregelix-core/src/main/resources/scripts/getip.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/getip.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 #get the OS
 OS_NAME=`uname -a|awk '{print $1}'`
 LINUX_OS='Linux'
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/pregelix b/pregelix/pregelix-core/src/main/resources/scripts/pregelix
index b1a2f74..7232ccc 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/pregelix
+++ b/pregelix/pregelix-core/src/main/resources/scripts/pregelix
@@ -1,22 +1,20 @@
 #!/bin/sh
-# ----------------------------------------------------------------------------
-#  Copyright 2001-2006 The Apache Software Foundation.
 #
-#  Licensed under the Apache License, Version 2.0 (the "License");
-#  you may not use this file except in compliance with the License.
-#  You may obtain a copy of the License at
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
 #
-#       http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#  See the License for the specific language governing permissions and
-#  limitations under the License.
-# ----------------------------------------------------------------------------
-#
-#   Copyright (c) 2001-2006 The Apache Software Foundation.  All rights
-#   reserved.
 
 
 # resolve links - $0 may be a softlink
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/pregelixcc b/pregelix/pregelix-core/src/main/resources/scripts/pregelixcc
index 461d76a..c1ee3f2 100755
--- a/pregelix/pregelix-core/src/main/resources/scripts/pregelixcc
+++ b/pregelix/pregelix-core/src/main/resources/scripts/pregelixcc
@@ -1,23 +1,20 @@
 #!/bin/sh
-# ----------------------------------------------------------------------------
-#  Copyright 2001-2006 The Apache Software Foundation.
 #
-#  Licensed under the Apache License, Version 2.0 (the "License");
-#  you may not use this file except in compliance with the License.
-#  You may obtain a copy of the License at
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
 #
-#       http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#  See the License for the specific language governing permissions and
-#  limitations under the License.
-# ----------------------------------------------------------------------------
-#
-#   Copyright (c) 2001-2006 The Apache Software Foundation.  All rights
-#   reserved.
-
 
 # resolve links - $0 may be a softlink
 PRG="$0"
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/pregelixnc b/pregelix/pregelix-core/src/main/resources/scripts/pregelixnc
index 4a6ca1f..c01b4b4 100755
--- a/pregelix/pregelix-core/src/main/resources/scripts/pregelixnc
+++ b/pregelix/pregelix-core/src/main/resources/scripts/pregelixnc
@@ -1,23 +1,20 @@
 #!/bin/sh
-# ----------------------------------------------------------------------------
-#  Copyright 2001-2006 The Apache Software Foundation.
 #
-#  Licensed under the Apache License, Version 2.0 (the "License");
-#  you may not use this file except in compliance with the License.
-#  You may obtain a copy of the License at
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
 #
-#       http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#  See the License for the specific language governing permissions and
-#  limitations under the License.
-# ----------------------------------------------------------------------------
-#
-#   Copyright (c) 2001-2006 The Apache Software Foundation.  All rights
-#   reserved.
-
 
 # resolve links - $0 may be a softlink
 PRG="$0"
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/startAllNCs.sh b/pregelix/pregelix-core/src/main/resources/scripts/startAllNCs.sh
index d30da26..821be00 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/startAllNCs.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/startAllNCs.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 PREGELIX_PATH=`pwd`
 
 for i in `cat conf/slaves`
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/startCluster.sh b/pregelix/pregelix-core/src/main/resources/scripts/startCluster.sh
index a0c2063..cddf9a4 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/startCluster.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/startCluster.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 bin/startcc.sh
 sleep 5
 bin/startAllNCs.sh
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/startDebugNc.sh b/pregelix/pregelix-core/src/main/resources/scripts/startDebugNc.sh
index fe6cf27..bb43686 100755
--- a/pregelix/pregelix-core/src/main/resources/scripts/startDebugNc.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/startDebugNc.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 
 #Get the IP address of the cc
@@ -40,11 +58,11 @@
 #Set JAVA_OPTS
 export JAVA_OPTS=$NCJAVA_OPTS2
 
-cd $HYRACKS_HOME
-HYRACKS_HOME=`pwd`
+PREGELIX_HOME=`pwd`
 
 #Enter the temp dir
 cd $NCTMP_DIR2
 
 #Launch hyracks nc
-$HYRACKS_HOME/hyracks-server/target/appassembler/bin/hyracksnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -node-id $NODEID -iodevices "${IO_DIRS2}" &> $NCLOGS_DIR2/$NODEID.log &
+#echo ${PREGELIX_HOME}/bin/pregelixnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -result-ip-address $IPADDR  -node-id $NODEID -iodevices "${IO_DIRS}"
+${PREGELIX_HOME}/bin/pregelixnc -cc-host $CCHOST -cc-port $CC_CLUSTERPORT -cluster-net-ip-address $IPADDR  -data-ip-address $IPADDR -result-ip-address $IPADDR  -node-id $NODEID -iodevices "${IO_DIRS2}" &> $NCLOGS_DIR2/$NODEID.log &
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/startcc.sh b/pregelix/pregelix-core/src/main/resources/scripts/startcc.sh
index 74f0987..282a6e7 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/startcc.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/startcc.sh
@@ -1,4 +1,21 @@
 #!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 
 #Import cluster properties
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/startnc.sh b/pregelix/pregelix-core/src/main/resources/scripts/startnc.sh
index 3ab1b25..970c30b 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/startnc.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/startnc.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 
 MY_NAME=`hostname`
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/stopAllNCs.sh b/pregelix/pregelix-core/src/main/resources/scripts/stopAllNCs.sh
index 12367c1..dc576d1 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/stopAllNCs.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/stopAllNCs.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 PREGELIX_PATH=`pwd`
 
 for i in `cat conf/slaves`
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/stopCluster.sh b/pregelix/pregelix-core/src/main/resources/scripts/stopCluster.sh
index 4889934..6b829aa 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/stopCluster.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/stopCluster.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 bin/stopAllNCs.sh
 sleep 2
 bin/stopcc.sh
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/stopcc.sh b/pregelix/pregelix-core/src/main/resources/scripts/stopcc.sh
index 84f369f..8f94fb7 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/stopcc.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/stopcc.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 . conf/cluster.properties
 
diff --git a/pregelix/pregelix-core/src/main/resources/scripts/stopnc.sh b/pregelix/pregelix-core/src/main/resources/scripts/stopnc.sh
index 7a5352d..26ef089 100644
--- a/pregelix/pregelix-core/src/main/resources/scripts/stopnc.sh
+++ b/pregelix/pregelix-core/src/main/resources/scripts/stopnc.sh
@@ -1,3 +1,21 @@
+#!/bin/bash
+#
+#------------------------------------------------------------------------
+# Copyright 2009-2013 by The Regents of the University of California
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License from
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------
+#
+
 hostname
 . conf/cluster.properties
 
@@ -9,10 +27,6 @@
 fi
 
 if [ "$PID" == "" ]; then
-  PID=`ps -ef|grep ${USER}|grep java|grep 'hyracks'|awk '{print $2}'`
-fi
-
-if [ "$PID" == "" ]; then
   USERID=`id | sed 's/^uid=//;s/(.*$//'`
   PID=`ps -ef|grep ${USERID}|grep java|grep 'Dapp.name=pregelixnc'|awk '{print $2}'`
 fi
diff --git a/pregelix/pregelix-dataflow-std-base/pom.xml b/pregelix/pregelix-dataflow-std-base/pom.xml
index 1ebc65d..1209496 100644
--- a/pregelix/pregelix-dataflow-std-base/pom.xml
+++ b/pregelix/pregelix-dataflow-std-base/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
     		<groupId>edu.uci.ics.hyracks</groupId>
     		<artifactId>pregelix</artifactId>
-    		<version>0.2.5-SNAPSHOT</version>
+    		<version>0.2.6-SNAPSHOT</version>
   	</parent>
 
 
@@ -74,14 +74,14 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/pregelix/pregelix-dataflow-std/pom.xml b/pregelix/pregelix-dataflow-std/pom.xml
index 884577e..585e82b 100644
--- a/pregelix/pregelix-dataflow-std/pom.xml
+++ b/pregelix/pregelix-dataflow-std/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>pregelix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 
@@ -74,77 +74,77 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-dataflow-std-base</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-data-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-hdfs-core</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-btree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-ipc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/BTreeSearchFunctionUpdateOperatorNodePushable.java b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/BTreeSearchFunctionUpdateOperatorNodePushable.java
index ff95e52..1fb5aca 100644
--- a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/BTreeSearchFunctionUpdateOperatorNodePushable.java
+++ b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/BTreeSearchFunctionUpdateOperatorNodePushable.java
@@ -43,7 +43,9 @@
 import edu.uci.ics.pregelix.dataflow.std.base.IRecordDescriptorFactory;
 import edu.uci.ics.pregelix.dataflow.std.base.IRuntimeHookFactory;
 import edu.uci.ics.pregelix.dataflow.std.base.IUpdateFunctionFactory;
+import edu.uci.ics.pregelix.dataflow.util.CopyUpdateUtil;
 import edu.uci.ics.pregelix.dataflow.util.FunctionProxy;
+import edu.uci.ics.pregelix.dataflow.util.SearchKeyTupleReference;
 import edu.uci.ics.pregelix.dataflow.util.UpdateBuffer;
 
 public class BTreeSearchFunctionUpdateOperatorNodePushable extends AbstractUnaryInputOperatorNodePushable {
@@ -74,6 +76,7 @@
     private final FunctionProxy functionProxy;
     private ArrayTupleBuilder cloneUpdateTb;
     private final UpdateBuffer updateBuffer;
+    private final SearchKeyTupleReference tempTupleReference = new SearchKeyTupleReference();
 
     public BTreeSearchFunctionUpdateOperatorNodePushable(AbstractTreeIndexOperatorDescriptor opDesc,
             IHyracksTaskContext ctx, int partition, IRecordDescriptorProvider recordDescProvider, boolean isForward,
@@ -147,21 +150,8 @@
             functionProxy.functionCall(tuple, cloneUpdateTb);
 
             //doing clone update
-            if (cloneUpdateTb.getSize() > 0) {
-                if (!updateBuffer.appendTuple(cloneUpdateTb)) {
-                    //release the cursor/latch
-                    cursor.close();
-                    //batch update
-                    updateBuffer.updateBTree(indexAccessor);
-
-                    //search again
-                    cursor.reset();
-                    rangePred.setLowKey(tuple, true);
-                    rangePred.setHighKey(highKey, highKeyInclusive);
-                    indexAccessor.search(cursor, rangePred);
-                }
-            }
-            cloneUpdateTb.reset();
+            CopyUpdateUtil.copyUpdate(tempTupleReference, tuple, updateBuffer, cloneUpdateTb, indexAccessor, cursor,
+                    rangePred);
         }
     }
 
diff --git a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopJoinFunctionUpdateOperatorNodePushable.java b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopJoinFunctionUpdateOperatorNodePushable.java
index 61e4649..427ffe9 100644
--- a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopJoinFunctionUpdateOperatorNodePushable.java
+++ b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopJoinFunctionUpdateOperatorNodePushable.java
@@ -43,7 +43,9 @@
 import edu.uci.ics.pregelix.dataflow.std.base.IRecordDescriptorFactory;
 import edu.uci.ics.pregelix.dataflow.std.base.IRuntimeHookFactory;
 import edu.uci.ics.pregelix.dataflow.std.base.IUpdateFunctionFactory;
+import edu.uci.ics.pregelix.dataflow.util.CopyUpdateUtil;
 import edu.uci.ics.pregelix.dataflow.util.FunctionProxy;
+import edu.uci.ics.pregelix.dataflow.util.SearchKeyTupleReference;
 import edu.uci.ics.pregelix.dataflow.util.UpdateBuffer;
 
 public class IndexNestedLoopJoinFunctionUpdateOperatorNodePushable extends AbstractUnaryInputOperatorNodePushable {
@@ -69,6 +71,7 @@
     private final FunctionProxy functionProxy;
     private ArrayTupleBuilder cloneUpdateTb;
     private final UpdateBuffer updateBuffer;
+    private final SearchKeyTupleReference tempTupleReference = new SearchKeyTupleReference();
 
     public IndexNestedLoopJoinFunctionUpdateOperatorNodePushable(AbstractTreeIndexOperatorDescriptor opDesc,
             IHyracksTaskContext ctx, int partition, IRecordDescriptorProvider recordDescProvider, boolean isForward,
@@ -163,21 +166,9 @@
              */
             functionProxy.functionCall(leftAccessor, tIndex, tupleRef, cloneUpdateTb);
 
-            if (cloneUpdateTb.getSize() > 0) {
-                if (!updateBuffer.appendTuple(cloneUpdateTb)) {
-                    //release the cursor/latch
-                    cursor.close();
-                    //batch update
-                    updateBuffer.updateBTree(indexAccessor);
-
-                    //search again
-                    cursor.reset();
-                    rangePred.setLowKey(tupleRef, true);
-                    rangePred.setHighKey(highKey, highKeyInclusive);
-                    indexAccessor.search(cursor, rangePred);
-                }
-            }
-            cloneUpdateTb.reset();
+            //doing copy update
+            CopyUpdateUtil.copyUpdate(tempTupleReference, tupleRef, updateBuffer, cloneUpdateTb, indexAccessor, cursor,
+                    rangePred);
         }
     }
 
diff --git a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopRightOuterJoinFunctionUpdateOperatorNodePushable.java b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopRightOuterJoinFunctionUpdateOperatorNodePushable.java
index 5ca5382..0c13a09 100644
--- a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopRightOuterJoinFunctionUpdateOperatorNodePushable.java
+++ b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopRightOuterJoinFunctionUpdateOperatorNodePushable.java
@@ -45,7 +45,9 @@
 import edu.uci.ics.pregelix.dataflow.std.base.IRecordDescriptorFactory;
 import edu.uci.ics.pregelix.dataflow.std.base.IRuntimeHookFactory;
 import edu.uci.ics.pregelix.dataflow.std.base.IUpdateFunctionFactory;
+import edu.uci.ics.pregelix.dataflow.util.CopyUpdateUtil;
 import edu.uci.ics.pregelix.dataflow.util.FunctionProxy;
+import edu.uci.ics.pregelix.dataflow.util.SearchKeyTupleReference;
 import edu.uci.ics.pregelix.dataflow.util.UpdateBuffer;
 
 public class IndexNestedLoopRightOuterJoinFunctionUpdateOperatorNodePushable extends
@@ -79,7 +81,8 @@
     private final IFrameWriter[] writers;
     private final FunctionProxy functionProxy;
     private ArrayTupleBuilder cloneUpdateTb;
-    private UpdateBuffer updateBuffer;
+    private final UpdateBuffer updateBuffer;
+    private final SearchKeyTupleReference tempTupleReference = new SearchKeyTupleReference();
 
     public IndexNestedLoopRightOuterJoinFunctionUpdateOperatorNodePushable(AbstractTreeIndexOperatorDescriptor opDesc,
             IHyracksTaskContext ctx, int partition, IRecordDescriptorProvider recordDescProvider, boolean isForward,
@@ -184,32 +187,6 @@
         }
     }
 
-    //for the join match casesos
-    private void writeResults(IFrameTupleAccessor leftAccessor, int tIndex, ITupleReference frameTuple)
-            throws Exception {
-        /**
-         * function call
-         */
-        functionProxy.functionCall(leftAccessor, tIndex, frameTuple, cloneUpdateTb);
-
-        //doing clone update
-        if (cloneUpdateTb.getSize() > 0) {
-            if (!updateBuffer.appendTuple(cloneUpdateTb)) {
-                //release the cursor/latch
-                cursor.close();
-                //batch update
-                updateBuffer.updateBTree(indexAccessor);
-
-                //search again and recover the cursor
-                cursor.reset();
-                rangePred.setLowKey(frameTuple, true);
-                rangePred.setHighKey(null, true);
-                indexAccessor.search(cursor, rangePred);
-            }
-            cloneUpdateTb.reset();
-        }
-    }
-
     @Override
     public void nextFrame(ByteBuffer buffer) throws HyracksDataException {
         accessor.reset(buffer);
@@ -289,6 +266,19 @@
         return lowKeySearchCmp.compare(left, right);
     }
 
+    //for the join match casesos
+    private void writeResults(IFrameTupleAccessor leftAccessor, int tIndex, ITupleReference frameTuple)
+            throws Exception {
+        /**
+         * function call
+         */
+        functionProxy.functionCall(leftAccessor, tIndex, frameTuple, cloneUpdateTb);
+
+        //doing clone update
+        CopyUpdateUtil.copyUpdate(tempTupleReference, frameTuple, updateBuffer, cloneUpdateTb, indexAccessor, cursor,
+                rangePred);
+    }
+
     /** write result for outer case */
     private void writeResults(ITupleReference frameTuple) throws Exception {
         /**
@@ -297,21 +287,8 @@
         functionProxy.functionCall(nullTupleBuilder, frameTuple, cloneUpdateTb);
 
         //doing clone update
-        if (cloneUpdateTb.getSize() > 0) {
-            if (!updateBuffer.appendTuple(cloneUpdateTb)) {
-                //release the cursor/latch
-                cursor.close();
-                //batch update
-                updateBuffer.updateBTree(indexAccessor);
-
-                //search again and recover the cursor
-                cursor.reset();
-                rangePred.setLowKey(frameTuple, true);
-                rangePred.setHighKey(null, true);
-                indexAccessor.search(cursor, rangePred);
-            }
-            cloneUpdateTb.reset();
-        }
+        CopyUpdateUtil.copyUpdate(tempTupleReference, frameTuple, updateBuffer, cloneUpdateTb, indexAccessor, cursor,
+                rangePred);
     }
 
     @Override
diff --git a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopSetUnionFunctionUpdateOperatorNodePushable.java b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopSetUnionFunctionUpdateOperatorNodePushable.java
index 160324e..1e5c2ea 100644
--- a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopSetUnionFunctionUpdateOperatorNodePushable.java
+++ b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/std/IndexNestedLoopSetUnionFunctionUpdateOperatorNodePushable.java
@@ -43,7 +43,9 @@
 import edu.uci.ics.pregelix.dataflow.std.base.IRecordDescriptorFactory;
 import edu.uci.ics.pregelix.dataflow.std.base.IRuntimeHookFactory;
 import edu.uci.ics.pregelix.dataflow.std.base.IUpdateFunctionFactory;
+import edu.uci.ics.pregelix.dataflow.util.CopyUpdateUtil;
 import edu.uci.ics.pregelix.dataflow.util.FunctionProxy;
+import edu.uci.ics.pregelix.dataflow.util.SearchKeyTupleReference;
 import edu.uci.ics.pregelix.dataflow.util.UpdateBuffer;
 
 public class IndexNestedLoopSetUnionFunctionUpdateOperatorNodePushable extends AbstractUnaryInputOperatorNodePushable {
@@ -72,6 +74,7 @@
     private final FunctionProxy functionProxy;
     private ArrayTupleBuilder cloneUpdateTb;
     private UpdateBuffer updateBuffer;
+    private final SearchKeyTupleReference tempTupleReference = new SearchKeyTupleReference();
 
     public IndexNestedLoopSetUnionFunctionUpdateOperatorNodePushable(AbstractTreeIndexOperatorDescriptor opDesc,
             IHyracksTaskContext ctx, int partition, IRecordDescriptorProvider recordDescProvider, boolean isForward,
@@ -235,21 +238,8 @@
         functionProxy.functionCall(frameTuple, cloneUpdateTb);
 
         //doing clone update
-        if (cloneUpdateTb.getSize() > 0) {
-            if (!updateBuffer.appendTuple(cloneUpdateTb)) {
-                //release the cursor/latch
-                cursor.close();
-                //batch update
-                updateBuffer.updateBTree(indexAccessor);
-
-                //search again
-                cursor.reset();
-                rangePred.setLowKey(frameTuple, true);
-                rangePred.setHighKey(null, true);
-                indexAccessor.search(cursor, rangePred);
-            }
-            cloneUpdateTb.reset();
-        }
+        CopyUpdateUtil.copyUpdate(tempTupleReference, frameTuple, updateBuffer, cloneUpdateTb, indexAccessor, cursor,
+                rangePred);
     }
 
     /** write the left result */
@@ -258,21 +248,8 @@
         functionProxy.functionCall(leftAccessor, tIndex, frameTuple, cloneUpdateTb);
 
         //doing clone update
-        if (cloneUpdateTb.getSize() > 0) {
-            if (!updateBuffer.appendTuple(cloneUpdateTb)) {
-                //release the cursor/latch
-                cursor.close();
-                //batch update
-                updateBuffer.updateBTree(indexAccessor);
-
-                //search again
-                cursor.reset();
-                rangePred.setLowKey(frameTuple, true);
-                rangePred.setHighKey(null, true);
-                indexAccessor.search(cursor, rangePred);
-            }
-            cloneUpdateTb.reset();
-        }
+        CopyUpdateUtil.copyUpdate(tempTupleReference, frameTuple, updateBuffer, cloneUpdateTb, indexAccessor, cursor,
+                rangePred);
     }
 
     @Override
diff --git a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/util/CopyUpdateUtil.java b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/util/CopyUpdateUtil.java
new file mode 100644
index 0000000..3f89543
--- /dev/null
+++ b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/util/CopyUpdateUtil.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package edu.uci.ics.pregelix.dataflow.util;
+
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.dataflow.common.comm.io.ArrayTupleBuilder;
+import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;
+import edu.uci.ics.hyracks.storage.am.btree.impls.RangePredicate;
+import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexAccessor;
+import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexCursor;
+import edu.uci.ics.hyracks.storage.am.common.api.IndexException;
+
+public class CopyUpdateUtil {
+
+    public static void copyUpdate(SearchKeyTupleReference tempTupleReference, ITupleReference frameTuple,
+            UpdateBuffer updateBuffer, ArrayTupleBuilder cloneUpdateTb, ITreeIndexAccessor indexAccessor,
+            ITreeIndexCursor cursor, RangePredicate rangePred) throws HyracksDataException, IndexException {
+        if (cloneUpdateTb.getSize() > 0) {
+            if (!updateBuffer.appendTuple(cloneUpdateTb)) {
+                tempTupleReference.reset(frameTuple.getFieldData(0), frameTuple.getFieldStart(0),
+                        frameTuple.getFieldLength(0));
+                //release the cursor/latch
+                cursor.close();
+                //batch update
+                updateBuffer.updateBTree(indexAccessor);
+                //try append the to-be-updated tuple again
+                if (!updateBuffer.appendTuple(cloneUpdateTb)) {
+                    throw new HyracksDataException("cannot append tuple builder!");
+                }
+                //search again and recover the cursor
+                cursor.reset();
+                rangePred.setLowKey(tempTupleReference, false);
+                rangePred.setHighKey(null, true);
+                indexAccessor.search(cursor, rangePred);
+            }
+            cloneUpdateTb.reset();
+        }
+    }
+
+}
diff --git a/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/util/SearchKeyTupleReference.java b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/util/SearchKeyTupleReference.java
new file mode 100644
index 0000000..86fa24a
--- /dev/null
+++ b/pregelix/pregelix-dataflow-std/src/main/java/edu/uci/ics/pregelix/dataflow/util/SearchKeyTupleReference.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.pregelix.dataflow.util;
+
+import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;
+
+public class SearchKeyTupleReference implements ITupleReference {
+
+    private byte[] copiedData;
+    private int length;
+
+    public void reset(byte[] data, int start, int len) {
+        if (copiedData == null) {
+            copiedData = new byte[len];
+        }
+        if (copiedData.length < len) {
+            copiedData = new byte[len];
+        }
+        System.arraycopy(data, start, copiedData, 0, len);
+        length = len;
+    }
+
+    @Override
+    public int getFieldCount() {
+        return 1;
+    }
+
+    @Override
+    public byte[] getFieldData(int fIdx) {
+        return copiedData;
+    }
+
+    @Override
+    public int getFieldStart(int fIdx) {
+        return 0;
+    }
+
+    @Override
+    public int getFieldLength(int fIdx) {
+        return length;
+    }
+
+}
diff --git a/pregelix/pregelix-dataflow/pom.xml b/pregelix/pregelix-dataflow/pom.xml
index 8e2be08..4c0da76 100644
--- a/pregelix/pregelix-dataflow/pom.xml
+++ b/pregelix/pregelix-dataflow/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>pregelix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 
@@ -74,68 +74,68 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-dataflow-std-base</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-data-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-btree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-ipc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/pregelix/pregelix-dist/pom.xml b/pregelix/pregelix-dist/pom.xml
index 846ff66..0839966 100644
--- a/pregelix/pregelix-dist/pom.xml
+++ b/pregelix/pregelix-dist/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>pregelix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 	<artifactId>pregelix-dist</artifactId>
 	<name>pregelix-dist</name>
@@ -69,13 +69,13 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-core</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-example</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 		</dependency>
 	</dependencies>
 </project>
diff --git a/pregelix/pregelix-example/pom.xml b/pregelix/pregelix-example/pom.xml
index 7ca7e5d..1d08b8c 100644
--- a/pregelix/pregelix-example/pom.xml
+++ b/pregelix/pregelix-example/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>edu.uci.ics.hyracks</groupId>
 		<artifactId>pregelix</artifactId>
-		<version>0.2.5-SNAPSHOT</version>
+		<version>0.2.6-SNAPSHOT</version>
 	</parent>
 
 	<build>
@@ -105,7 +105,7 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-core</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/pregelix/pregelix-example/src/test/resources/hyracks-deployment.properties b/pregelix/pregelix-example/src/test/resources/hyracks-deployment.properties
deleted file mode 100644
index 9c42b89..0000000
--- a/pregelix/pregelix-example/src/test/resources/hyracks-deployment.properties
+++ /dev/null
@@ -1,2 +0,0 @@
-#cc.bootstrap.class=edu.uci.ics.asterix.hyracks.bootstrap.CCBootstrapImpl
-nc.bootstrap.class=edu.uci.ics.pregelix.runtime.bootstrap.NCBootstrapImpl
diff --git a/pregelix/pregelix-runtime/pom.xml b/pregelix/pregelix-runtime/pom.xml
index 2d7b20d..2b56271 100644
--- a/pregelix/pregelix-runtime/pom.xml
+++ b/pregelix/pregelix-runtime/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
     		<groupId>edu.uci.ics.hyracks</groupId>
     		<artifactId>pregelix</artifactId>
-    		<version>0.2.5-SNAPSHOT</version>
+    		<version>0.2.6-SNAPSHOT</version>
   	</parent>
 
 
@@ -74,82 +74,82 @@
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-dataflow-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-dataflow</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-api</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-dataflow-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-data-std</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-common</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-storage-am-btree</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>hyracks-ipc</artifactId>
-			<version>0.2.5-SNAPSHOT</version>
+			<version>0.2.6-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>