diff --git a/pom.xml b/pom.xml
index f4f8479e..797edc1c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,194 +1,193 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- 
 Copyright (c) 2012 - 2016 YCSB contributors. All rights reserved.
 
 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
 
 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. See accompanying
 LICENSE file.
 -->
 
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>com.yahoo.ycsb</groupId>
   <artifactId>root</artifactId>
   <version>0.13.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>YCSB Root</name>
 
   <description>
     This is the top level project that builds, packages the core and all the DB bindings for YCSB infrastructure.
   </description>
 
   <scm>
     <connection>scm:git:git://github.com/brianfrankcooper/YCSB.git</connection>
     <tag>master</tag>
     <url>https://github.com/brianfrankcooper/YCSB</url>
   </scm>
   <dependencyManagement>
     <dependencies>
       <dependency>
         <groupId>com.puppycrawl.tools</groupId>
         <artifactId>checkstyle</artifactId>
         <version>7.7.1</version>
       </dependency>
       <dependency>
         <groupId>org.jdom</groupId>
         <artifactId>jdom</artifactId>
         <version>1.1</version>
       </dependency>
       <dependency>
         <groupId>com.google.collections</groupId>
         <artifactId>google-collections</artifactId>
         <version>1.0</version>
       </dependency>
       <!--
       Nail down slf4j version to 1.6 so that it defaults to no-op logger.
       http://www.slf4j.org/codes.html#StaticLoggerBinder
       -->
       <dependency>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-api</artifactId>
         <version>1.6.4</version>
       </dependency>
     </dependencies>
   </dependencyManagement>
 
   <!-- Properties Management -->
   <properties>
     <maven.assembly.version>2.5.5</maven.assembly.version>
     <maven.dependency.version>2.10</maven.dependency.version>
     <asynchbase.version>1.7.1</asynchbase.version>
     <hbase094.version>0.94.27</hbase094.version>
     <hbase098.version>0.98.14-hadoop2</hbase098.version>
     <hbase10.version>1.0.2</hbase10.version>
     <hbase12.version>1.2.5</hbase12.version>
     <accumulo.version>1.6.0</accumulo.version>
     <cassandra.cql.version>3.0.0</cassandra.cql.version>
     <geode.version>1.2.0</geode.version>
     <azuredocumentdb.version>1.8.1</azuredocumentdb.version>
     <googlebigtable.version>0.9.7</googlebigtable.version>
     <infinispan.version>7.2.2.Final</infinispan.version>
     <kudu.version>1.1.0</kudu.version>
     <openjpa.jdbc.version>2.1.1</openjpa.jdbc.version>
     <!--<mapkeeper.version>1.0</mapkeeper.version>-->
     <mongodb.version>3.0.3</mongodb.version>
     <mongodb.async.version>2.0.1</mongodb.async.version>
     <orientdb.version>2.2.10</orientdb.version>
     <redis.version>2.0.0</redis.version>
     <s3.version>1.10.20</s3.version>
     <voldemort.version>0.81</voldemort.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <thrift.version>0.8.0</thrift.version>
     <hypertable.version>0.9.5.6</hypertable.version>
-    <elasticsearch-version>2.4.4</elasticsearch-version>                                                                                                                                      
     <elasticsearch5-version>5.5.1</elasticsearch5-version>
     <couchbase.version>1.4.10</couchbase.version>
     <couchbase2.version>2.3.1</couchbase2.version>
     <tarantool.version>1.6.5</tarantool.version>
     <riak.version>2.0.5</riak.version>
     <aerospike.version>3.1.2</aerospike.version>
     <solr.version>5.5.3</solr.version>
     <solr6.version>6.4.1</solr6.version>
     <arangodb.version>2.7.3</arangodb.version>
     <arangodb3.version>4.1.7</arangodb3.version>
     <azurestorage.version>4.0.0</azurestorage.version>
     <cloudspanner.version>0.20.3-beta</cloudspanner.version>
   </properties>
 
   <modules>
     <!-- our internals -->
     <module>core</module>
     <module>binding-parent</module>
     <!-- all the datastore bindings, lex sorted please -->
     <module>accumulo</module>
     <module>aerospike</module>
     <module>arangodb</module>
     <module>arangodb3</module>
     <module>asynchbase</module>
     <module>azuretablestorage</module>
     <module>cassandra</module>
     <module>cloudspanner</module>
     <module>couchbase</module>
     <module>couchbase2</module>
     <module>distribution</module>
     <module>azuredocumentdb</module>
     <module>dynamodb</module>
     <module>elasticsearch</module>
     <module>elasticsearch5</module>
     <module>geode</module>
     <module>googlebigtable</module>
     <module>googledatastore</module>
     <module>hbase094</module>
     <module>hbase098</module>
     <module>hbase10</module>
     <module>hbase12</module>
     <module>hypertable</module>
     <module>infinispan</module>
     <module>jdbc</module>
     <module>kudu</module>
     <!--<module>mapkeeper</module>-->
     <module>memcached</module>
     <module>mongodb</module>
     <module>nosqldb</module>
     <module>orientdb</module>
     <module>rados</module>
     <module>redis</module>
     <module>rest</module>
     <module>riak</module>
     <module>s3</module>
     <module>solr</module>
     <module>solr6</module>
     <module>tarantool</module>
     <!--<module>voldemort</module>-->
   </modules>
 
   <build>
     <pluginManagement>
       <plugins>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-checkstyle-plugin</artifactId>
           <version>2.16</version>
         </plugin>
       </plugins>
     </pluginManagement>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.3</version>
         <configuration>
           <source>1.7</source>
           <target>1.7</target>
         </configuration>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
         <executions>
           <execution>
             <id>validate</id>
             <phase>validate</phase>
             <goals>
               <goal>check</goal>
             </goals>
             <configuration>
               <configLocation>checkstyle.xml</configLocation>
             </configuration>
           </execution>
         </executions>
       </plugin>
     </plugins>
   </build>
 </project>