title: Import Maven project "YCSB" into Eclipse
body: <p>Can someone tell me the right way to import a Maven Project (in my case YCSB) into Eclipse Luna? 
  I am trying it via <code>Import &gt; Maven &gt; Existing Maven Projects</code>. Eclipse imports all the folders and files, but  there is an error in every folders POM.xml.</p>
  
  <pre><code>Plugin execution not covered by lifecycle configuration:
  org.apache.maven.plugins:maven-checkstyle-plugin:2.15:checkstyle (execution: validate, phase: validate)
  </code></pre>
  
  <p>Also I have no idea how to build and run the the project. I tried it by configuring a Maven Run Configuration with the goals <code>clean package</code> and compiled. The Build fails with following Console output.</p>
  
  <pre><code>[INFO] BUILD FAILURE
  [INFO] ------------------------------------------------------------------------
  [INFO] Total time: 4.087 s
  [INFO] Finished at: 2015-09-15T14:04:29+01:00
  [INFO] Final Memory: 19M/170M
  [INFO] ------------------------------------------------------------------------
  [ERROR] Plugin org.apache.maven.plugins:maven-surefire-plugin:2.12.4 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-surefire-plugin:jar:2.12.4: Could not transfer artifact org.apache.maven.plugins:maven-surefire-plugin:pom:2.12.4 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org: Der Name oder der Dienst ist nicht bekannt: Unknown host repo.maven.apache.org: Der Name oder der Dienst ist nicht bekannt -&gt; [Help 1]
  [ERROR] 
  [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
  [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  [ERROR] 
  [ERROR] For more information about the errors and possible solutions, please read the following articles:
  [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
  </code></pre>
  
  <p>Building the project with the commandline command <code>mvn clean package</code> builds the project without an error.</p>
  
  <p>My system has Ubuntu 14.04 and Maven 3 installed.</p>