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 named "testuser" in the Linux cluster and in HDFS, and log in as that user.
Export the required environment variables for Mahout:
export JAVA_HOME="your_jdk_home_install_location_here export HADOOP_HOME=/usr/hdp/current/hadoop-client export MAHOUT_HOME=/usr/hdp.current/mahout-client export PATH="$PATH":$HADOOP_HOME/bin:$MAHOUT_HOME/bin export CLASSPATH="$CLASSPATH":$MAHOUT_HOME
Upload a few megabytes of natural-language plain text to the Linux server as
/tmp/sample-test.txt.Transfer the sample-test.txt file to a subdirectory of the testusers's HDFS home directory.
hdfs dfs -mkdir /user/testuser/testdata hdfs dfs -put /tmp/sample-test.txt /user/testuser/testdata
Enter the mahout command to convert the plain text file sample-test.txt into a sequence file stored in the output directory mahouttest:
mahout seqdirectory --input /user/testuser/testdata --output /user/testuser/mahouttest -ow --charset utf-8
