###Mahout Hadoop Use Case

Purpose of this program:

• Hadoop 2.2.0 is incompatible with mahout 0.8 problem (problem was resolved on 25/Feb/14), I would like to figure out an alternative method of running use case on Hadoop 2.2.0 with Mahout 0.8 collaborative filtering library
• Run hadoop program on Eclipse and Yarn

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Steps:

• Setup Hadoop Yarn, hadoop 2.2.0
• sbin/start_classicCF.sh
  • This script is used to download the dataset,
  • start and put data onto the hadoop HDFS,
  • build a runnable Jar of this project
• Setup MahoutHadoopUseCase_HOME and HADOOP_HOME in ~/.bash_profile
• Set up eclipse plugin for hadoop 2.2.0 (Mac OS X 10.9.1)
• Import this Maven program into eclipse
• In eclipse, open the file RecommenderJob.java in folder feiyu.com.cfex, and input the arguments as follows, later click Run As -> Run on Hadoop

--input src/main/resources/datasets/preferenceData \\
--output src/main/resources/datasets/DB_output \\
--similarityClassname SIMILARITY_COOCCURRENCE \\
--usersFile src/main/resources/datasets/userid.txt \\
--itemsFile src/main/resources/datasets/itemid.txt \\
--filterFile src/main/resources/datasets/filterUserItemPairs.txt \\
--numRecommendations 8171 \\
--booleanData true \\
--outputPathForSimilarityMatrix src/main/resources/datasets/opfsm \\
--tempDir src/main/resources/datasets/temp

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sbin/cleanUpBeforeCommit.sh