Can you share the parameters you used to get this? Does it happen every time?
On Mar 29, 2010, at 11:53 PM, Arshad Khan wrote: > Hello All > > While using Mahout 0.3 KMeansDriver I am encountering an exception > indicating an empty cluster. This happens sometimes while re-running the > clustering on the same data set. Is there a way to prevent this error? The > exception trace is follows: > > java.lang.RuntimeException: Error in configuring object > at > org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93) > at > org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64) > at > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117) > at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:354) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307) > at > org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:176) > Caused by: java.lang.reflect.InvocationTargetException > at sun.reflect.GeneratedMethodAccessor39.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88) > ... 5 more > Caused by: java.lang.RuntimeException: Error in configuring object > at > org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93) > at > org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64) > at > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117) > at org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34) > ... 9 more > Caused by: java.lang.reflect.InvocationTargetException > at sun.reflect.GeneratedMethodAccessor39.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88) > ... 12 more > Caused by: java.lang.IllegalStateException: Cluster is empty! > at > org.apache.mahout.clustering.kmeans.KMeansClusterMapper.configure(KMeansClusterMapper.java:73) > ... 16 more > > Thanks > Arshad -------------------------- Grant Ingersoll http://www.lucidimagination.com/ Search the Lucene ecosystem using Solr/Lucene: http://www.lucidimagination.com/search
