Hadoop: java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected

Question

My MapReduce jobs runs ok when assembled in Eclipse with all possible Hadoop and Hive jars included in Eclipse project as dependencies. (These are the jars that come with si

Answer 1

Look for entries like this

            org.apache.hadoop
            hadoop-core
            1.2.1

in your pom.xml. These define the hadoop version to use. Change them or remove them as per your requirements.