title: Maven Building Error
body: <p>When I try to run</p>
  
  <pre><code>mvn clean package
  </code></pre>
  
  <p>I am getting the following error</p>
  
  <pre><code>Downloading: http://repo.maven.apache.org/maven2/org/apache/maven /plugins/maven-clean-plugin/2.4.1/maven-clean-plugin-2.4.1.pom
  [INFO] ------------------------------------------------------------------------
   [INFO] Reactor Summary:
   [INFO] 
   [INFO] YCSB Root ......................................... FAILURE [21.334s]
   [INFO] Core YCSB ......................................... SKIPPED
   [INFO] Cassandra DB Binding .............................. SKIPPED
   [INFO] HBase DB Binding .................................. SKIPPED
   [INFO] Hypertable DB Binding ............................. SKIPPED
   [INFO] DynamoDB DB Binding ............................... SKIPPED
   [INFO] ElasticSearch Binding ............................. SKIPPED
   [INFO] Infinispan DB Binding ............................. SKIPPED
   [INFO] JDBC DB Binding ................................... SKIPPED
   [INFO] Mapkeeper DB Binding .............................. SKIPPED
   [INFO] Mongo DB Binding .................................. SKIPPED
   [INFO] OrientDB Binding .................................. SKIPPED
   [INFO] Redis DB Binding .................................. SKIPPED
   [INFO] Voldemort DB Binding .............................. SKIPPED
   [INFO] YCSB Release Distribution Builder ................. SKIPPED
   [INFO] ------------------------------------------------------------------------
   [INFO] BUILD FAILURE
   [INFO] ------------------------------------------------------------------------
   [INFO] Total time: 21.581s
   [INFO] Finished at: Sun Jun 23 14:32:40 IST 2013
   [INFO] Final Memory: 7M/238M
   [INFO] ------------------------------------------------------------------------
   [ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1 from/to central (http://repo.maven.apache.org/maven2): Connection to http://repo.maven.apache.org refused: Connection timed out -&gt; [Help 1]
  </code></pre>
  
  <p><strong>pom.xml File</strong></p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;project xmlns="http://maven.apache.org/POM/3.0.5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/3.0.5 http://maven.apache.org/xsd/maven-4.0.0.xsd"&gt;
    &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  
    &lt;groupId&gt;com.yahoo.ycsb&lt;/groupId&gt;
    &lt;artifactId&gt;root&lt;/artifactId&gt;
    &lt;version&gt;0.1.4&lt;/version&gt;
    &lt;packaging&gt;pom&lt;/packaging&gt;
  
    &lt;name&gt;YCSB Root&lt;/name&gt;
  
    &lt;description&gt;
      This is the top level project that builds, packages the core and all the DB bindings for YCSB infrastructure.
    &lt;/description&gt;
    &lt;dependencies&gt;
      &lt;!-- voldemort --&gt;
      &lt;dependency&gt;
        &lt;groupId&gt;checkstyle&lt;/groupId&gt;
        &lt;artifactId&gt;checkstyle&lt;/artifactId&gt;
        &lt;version&gt;5.0&lt;/version&gt;
      &lt;/dependency&gt;
      &lt;dependency&gt;
        &lt;groupId&gt;org.jdom&lt;/groupId&gt;
        &lt;artifactId&gt;jdom&lt;/artifactId&gt;
        &lt;version&gt;1.1&lt;/version&gt;
      &lt;/dependency&gt;
      &lt;dependency&gt;
        &lt;groupId&gt;com.google.collections&lt;/groupId&gt;
        &lt;artifactId&gt;google-collections&lt;/artifactId&gt;
        &lt;version&gt;1.0&lt;/version&gt;
      &lt;/dependency&gt;
      &lt;!--
      Nail down slf4j version to 1.6 so that it defaults to no-op logger.
      http://www.slf4j.org/codes.html#StaticLoggerBinder
      --&gt;
      &lt;dependency&gt;
        &lt;groupId&gt;org.slf4j&lt;/groupId&gt;
        &lt;artifactId&gt;slf4j-api&lt;/artifactId&gt;
        &lt;version&gt;1.6.4&lt;/version&gt;
      &lt;/dependency&gt;
  
      &lt;dependency&gt;
        &lt;groupId&gt;org.apache.hadoop&lt;/groupId&gt;
        &lt;artifactId&gt;hadoop-core&lt;/artifactId&gt;
        &lt;version&gt;1.0.1&lt;/version&gt;
      &lt;/dependency&gt;
    &lt;/dependencies&gt;
  
  
    &lt;!-- Properties Management --&gt;
    &lt;properties&gt;
      &lt;maven.assembly.version&gt;2.2.1&lt;/maven.assembly.version&gt;
      &lt;hbase.version&gt;0.94.3&lt;/hbase.version&gt;
      &lt;cassandra.version&gt;0.7.0&lt;/cassandra.version&gt;
      &lt;infinispan.version&gt;7.1.0.CR1&lt;/infinispan.version&gt;
      &lt;openjpa.jdbc.version&gt;2.1.1&lt;/openjpa.jdbc.version&gt;
      &lt;mapkeeper.version&gt;1.0&lt;/mapkeeper.version&gt;
      &lt;mongodb.version&gt;2.9.0&lt;/mongodb.version&gt;
      &lt;orientdb.version&gt;1.0.1&lt;/orientdb.version&gt;
      &lt;redis.version&gt;2.0.0&lt;/redis.version&gt;
      &lt;voldemort.version&gt;0.81&lt;/voldemort.version&gt;
      &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
      &lt;thrift.version&gt;0.8.0&lt;/thrift.version&gt;
      &lt;hypertable.version&gt;0.9.5.6&lt;/hypertable.version&gt;
    &lt;/properties&gt;
  
  
    &lt;modules&gt;
      &lt;!--module&gt;build-tools&lt;/module--&gt;
      &lt;module&gt;cassandra&lt;/module&gt;
      &lt;module&gt;core&lt;/module&gt;
      &lt;module&gt;hbase&lt;/module&gt;
      &lt;module&gt;hypertable&lt;/module&gt;
      &lt;module&gt;dynamodb&lt;/module&gt;
      &lt;module&gt;elasticsearch&lt;/module&gt;
      &lt;!--&lt;module&gt;gemfire&lt;/module&gt;--&gt;
      &lt;module&gt;infinispan&lt;/module&gt;
      &lt;module&gt;jdbc&lt;/module&gt;
      &lt;module&gt;mapkeeper&lt;/module&gt;
      &lt;module&gt;mongodb&lt;/module&gt;
      &lt;module&gt;orientdb&lt;/module&gt;
      &lt;!--module&gt;nosqldb&lt;/module--&gt;
      &lt;module&gt;redis&lt;/module&gt;
      &lt;module&gt;voldemort&lt;/module&gt;
      &lt;module&gt;distribution&lt;/module&gt;
    &lt;/modules&gt;
  
    &lt;build&gt;
      &lt;plugins&gt;
        &lt;plugin&gt;
          &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
          &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
          &lt;version&gt;2.3.2&lt;/version&gt;
          &lt;configuration&gt;
            &lt;source&gt;1.6&lt;/source&gt;
            &lt;target&gt;1.6&lt;/target&gt;
          &lt;/configuration&gt;
        &lt;/plugin&gt;
        &lt;plugin&gt;
          &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
          &lt;artifactId&gt;maven-checkstyle-plugin&lt;/artifactId&gt;
          &lt;version&gt;2.6&lt;/version&gt;
          &lt;configuration&gt;
            &lt;consoleOutput&gt;true&lt;/consoleOutput&gt;
            &lt;configLocation&gt;checkstyle.xml&lt;/configLocation&gt;
          &lt;/configuration&gt;
          &lt;executions&gt;
            &lt;execution&gt;
            &lt;id&gt;validate&lt;/id&gt;
              &lt;phase&gt;validate&lt;/phase&gt;
              &lt;goals&gt;
                &lt;goal&gt;checkstyle&lt;/goal&gt;
              &lt;/goals&gt;
            &lt;/execution&gt;
          &lt;/executions&gt;
        &lt;/plugin&gt;
      &lt;/plugins&gt;
    &lt;/build&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>Through <strong>wget <a href="http://repo.maven.apache.org" rel="nofollow">http://repo.maven.apache.org</a></strong> it's not showing any error. Can any one help me in this?</p>
  
  <p>I am trying to run YCSB benchmark, I got this error.</p>