My set-ups seems work well: $hadoop fs –copyFromLocal reuters_text reuters_text $hadoop fs –ls reuters_text/ Many files in the directory $mahout seqdirectory –i reuters_text –o reuters_seq –c UTF-8
reuters_seq directory generated but empty mapreduce job was failed with the message: 14/01/15 11:27:36 INFO mapreduce.Job: Task Id : attempt_1389802273858_0007_m_000001_2, Status : FAILED Error: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at org.apache.hadoop.mapreduce.lib.input.CombineFileRecordReader.initNextRecordReader(CombineFileRecordReader.java:164) at org.apache.hadoop.mapreduce.lib.input.CombineFileRecordReader.<init>(CombineFileRecordReader.java:126) at org.apache.mahout.text.MultipleTextFileInputFormat.createRecordReader(MultipleTextFileInputFormat.java:43) at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.<init>(MapTask.java:491) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:734) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:339) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:416) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:534) at org.apache.hadoop.mapreduce.lib.input.CombineFileRecordReader.initNextRecordReader(CombineFileRecordReader.java:155) ... 10 more Caused by: java.lang.IncompatibleClassChangeError: Found interface Some suggestions? I am running hadoop2.2.0, mahout 0.8. Thanks. Pengchu -- View this message in context: http://lucene.472066.n3.nabble.com/seqdirectory-error-on-mapreduce-tp4111508.html Sent from the Mahout User List mailing list archive at Nabble.com.