Replace your configuration after upgrading. Copy /etc/mahout/conf from the template to the conf directory in mahout hosts.
To validate Apache Mahout:
Create a test user:
hdfs dfs -put /tmp/sample-test.txt /user/testuser
Set up mahout to convert the plain text file sample-test.txt into a sequence file that is in the output directory mahouttest.
mahout seqdirectory --input /user/testuser/sample-test.txt --output /user/ testuser/mahouttest --charset utf-8
