title: JsonMappingException on a Hadoop program with Eclipse
body: <p>Seeing JsonMappingException on a simple Hadoop program when running in Eclipse(Kepler) with Cloudera QuickStart VM</p>
  
  <pre><code>Exception in thread "main" java.lang.NoClassDefFoundError: org/codehaus/jackson/map/JsonMappingException
      at org.apache.hadoop.mapreduce.Job$1.run(Job.java:595)
      at java.security.AccessController.doPrivileged(Native Method)
      at javax.security.auth.Subject.doAs(Subject.java:415)
      at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
      at org.apache.hadoop.mapreduce.Job.connect(Job.java:593)
      at org.apache.hadoop.mapreduce.Job.submit(Job.java:581)
      at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:612)
      at MaxTemperature.main(MaxTemperature.java:28)
  Caused by: java.lang.ClassNotFoundException: org.codehaus.jackson.map.JsonMappingException
      at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
      ... 8 more
  </code></pre>
  
  <p>As suggested by many, tried adding jackson jars from the quickstart VM but no success.</p>