Mahout 0.9 is not supported anymore and u shouldn't be using it. The issue u r seeing is due to Mahout 0.9 not being compatible with hadoop 2.x.
Suggest you try this example with Mahout 0.11.0 or 0.12.0. On Mon, Apr 25, 2016 at 6:27 AM, Nantia Makrynioti <nantiam...@gmail.com> wrote: > Hello, > > I have installed Hadoop 2.2.0 on an Ubuntu 14.04 machine. I built Mahout > 0.9 with > > mvn clean package -Dhadoop2.version=2.2.0 > > but when I run the 20newsgroups classification example, I get the following > exception: > > java.lang.IncompatibleClassChangeError: Found interface > org.apache.hadoop.mapreduce.JobContext, but class was expected > > How can I run Mahout with Hadoop 2.2.0? > > Thank you in advance, > Nantia >
