https://issues.apache.org/jira/browse/MAHOUT-258
The error message: testGatherInfos(org.apache.mahout.ga.watchmaker.cd.tool.CDInfosToolTest) Time elapsed: 6.731 sec <<< ERROR! java.io.IOException: Job failed! at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1252) does not give me much to go on. I don't see how adding new Set classes to my tree could cause this ...