Hi, Hadoop experts, I've written my custom GroupComparator, and I want to tell Hadoop about it.
Now, there is a call job.setGroupingComparatorClass(), but I only find it in mapreduce package of version 0.21. In prior versions, I see a similar call conf.setOutputValueGroupingComparator(GroupComparator.class); but it does not cause my GroupComparator to be being used. So my question is, should I change the code to use the mapreduce package (not a problem, since Cloudera has it backported to the current distribution), or is there a different, simpler way? Thank you. Sincerely, Mark
