08/04/15 20:50:43 INFO mapred.JobClient: Task Id : task_200804150848_0005_m_000000_2, Status : FAILED
java.lang.AbstractMethodError: org.apache.mahout.clustering.hierarchial.HierarchialClusterDriver$LeafNodesMapper.map(Ljava/lang/Object;Ljava/lang/Object;Lorg/apache/hadoop/mapred/OutputCollector;Lorg/apache/hadoop/mapred/Reporter;)V
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:47)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:219)
at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2126)