Found interface org.apache.hadoop.mapreduce.TaskAttemptContext, but class was expected

[Bai Shen]

I'm using Nutch 2 on CDH4.  Nutch uses Gora to talk to HBase.  I'm getting
the following error.  Any suggestions on how to fix this?

Thanks.

12/10/03 15:33:59 WARN mapred.LocalJobRunner: job_local_0001
java.lang.IncompatibleClassChangeError: Found interface
org.apache.hadoop.mapreduce.TaskAttemptContext, but class was expected
        at
org.apache.gora.mapreduce.GoraOutputFormat.getRecordWriter(GoraOutputFormat.java:83)
        at
org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.<init>(MapTask.java:523)
        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:626)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)
        at
org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:263)