Trying to create a write to a MapFile on Hadoop version 2.2.0 MapFile.Writer writer = new MapFile.Writer(conf, path,SequenceFile.Writer.keyClass(key.getClass()),
SequenceFile.Writer.valueClass(value.getClass())); But fails with illegal argument exception eventhough the key can value class option is set. Any help is much appreciated. Exception in thread "main" java.lang.IllegalArgumentException: key class or comparator option must be set
