title: Hortonworks Data node install: Exception in secureMain
body: <p>Am trying to install Hortonworks Hadoop single node cluster. I am able to start namenode and secondary namenode, but datanode failed with the following error. How do I solve this issue?</p>
  
  <blockquote>
    <p>2014-04-04 18:22:49,975 FATAL datanode.DataNode (DataNode.java:secureMain(1841)) - Exception in secureMain
    java.lang.RuntimeException: Although a UNIX domain socket path is configured as /var/lib/hadoop-hdfs/dn_socket, we cannot start a localDataXceiverServer because libhadoop cannot be loaded."</p>
  </blockquote>