java - Maven Building Error -

when try run

mvn clean package 

i getting following error

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 1 of dependencies not resolved: failed read artifact descriptor org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1: not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1 from/to central (http://repo.maven.apache.org/maven2): connection http://repo.maven.apache.org refused: connection timed out -> [help 1] 

pom.xml file

<?xml version="1.0" encoding="utf-8"?> <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">   <modelversion>4.0.0</modelversion>    <groupid>com.yahoo.ycsb</groupid>   <artifactid>root</artifactid>   <version>0.1.4</version>   <packaging>pom</packaging>    <name>ycsb root</name>    <description>     top level project builds, packages core , db bindings ycsb infrastructure.   </description>   <dependencies>     <!-- voldemort -->     <dependency>       <groupid>checkstyle</groupid>       <artifactid>checkstyle</artifactid>       <version>5.0</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 1.6 defaults 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>      <dependency>       <groupid>org.apache.hadoop</groupid>       <artifactid>hadoop-core</artifactid>       <version>1.0.1</version>     </dependency>   </dependencies>     <!-- properties management -->   <properties>     <maven.assembly.version>2.2.1</maven.assembly.version>     <hbase.version>0.94.3</hbase.version>     <cassandra.version>0.7.0</cassandra.version>     <infinispan.version>7.1.0.cr1</infinispan.version>     <openjpa.jdbc.version>2.1.1</openjpa.jdbc.version>     <mapkeeper.version>1.0</mapkeeper.version>     <mongodb.version>2.9.0</mongodb.version>     <orientdb.version>1.0.1</orientdb.version>     <redis.version>2.0.0</redis.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>   </properties>     <modules>     <!--module>build-tools</module-->     <module>cassandra</module>     <module>core</module>     <module>hbase</module>     <module>hypertable</module>     <module>dynamodb</module>     <module>elasticsearch</module>     <!--<module>gemfire</module>-->     <module>infinispan</module>     <module>jdbc</module>     <module>mapkeeper</module>     <module>mongodb</module>     <module>orientdb</module>     <!--module>nosqldb</module-->     <module>redis</module>     <module>voldemort</module>     <module>distribution</module>   </modules>    <build>     <plugins>       <plugin>         <groupid>org.apache.maven.plugins</groupid>         <artifactid>maven-compiler-plugin</artifactid>         <version>2.3.2</version>         <configuration>           <source>1.6</source>           <target>1.6</target>         </configuration>       </plugin>       <plugin>         <groupid>org.apache.maven.plugins</groupid>         <artifactid>maven-checkstyle-plugin</artifactid>         <version>2.6</version>         <configuration>           <consoleoutput>true</consoleoutput>           <configlocation>checkstyle.xml</configlocation>         </configuration>         <executions>           <execution>           <id>validate</id>             <phase>validate</phase>             <goals>               <goal>checkstyle</goal>             </goals>           </execution>         </executions>       </plugin>     </plugins>   </build> </project> 

through wget http://repo.maven.apache.org it's not showing error. can 1 me in this?

i trying run ycsb benchmark, got error.

as error says, not able connect maven repository @ : http://repo.maven.apache.org

try different repository, details here or add pom, this:

<repository>                         <id>central</id>           <name>central</name>           <url>http://repo1.maven.org/maven2</url> </repository>