Mahout安装与测试－基于hadoop单结点伪分布式

安装JDK

见我之前关于JDK1.7安装的博客：

http://blog.csdn.net/stanely_hwang/article/details/18883599

Hadoop单结点伪分布式安装

见我之前关于Hadoop单结点伪分布式安装的博客：

http://blog.csdn.net/stanely_hwang/article/details/18884181

Mahout安装与配置

1：下载二进制解压安装：

 Mahout下载地址：

http://www.apache.org/dyn/closer.cgi/mahout/

Mahout下载完后，直接解压。我将Mahout下载到/opt/hadoop下，进入该目录，进行解压操作

$ cd /opt/hadoop$ tar -zxvf mahout-distribution-0.9

2：配置环境变量：

用vim编辑/etc/profile文件, 再文件末尾添加$JHADOOP_HOME, $HADOOP_CONF,$MAHOUT_HOME 环境遍历，
详细配置信息如下所示：

JAVA_HOME=/opt/java/jdkPATH=/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/binJRE_HOME=/opt/java/jdkPATH=/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/binexport JAVA_HOMEexport JRE_HOMEexport HADOOP_HOME=/home/andy/hadoop-2.2.0export HADOOP_CONF_DIR=/home/andy/hadoop-2.2.0/confexport MAHOUT_HOME=/opt/hadoop/mahout-distribution-0.9export PATH=$HADOOP_HOME/bin:$MAHOUT_HOME/bin:$PATHexport PATHexport PATH=/sbin:/bin:/usr/sbin:/usr/bin:/sbin

3：启动Hadoop：

到Hadoop安装目录的sbin目录下执行（~/hadoop-2.2.0/sbin目录下)

 $  ./hadoop-daemon.sh start namenode

 $ ./hadoop-daemon.sh start datanode

$ ./yarn-daemon.sh start resourcemanager

 $ ./yarn-daemon.sh start nodemanager

4：mahout
--help    #检查Mahout是否安装完好，看是否列出了一些算法

进入$MAHOUT_HOME/bin目录

 $ cd $MAHOUT_HOME/bin

 $ ./mahout --help

 输出内容如下：

MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath.Running on hadoop, using /home/andy/hadoop-2.2.0/bin/hadoop and HADOOP_CONF_DIR=/home/andy/hadoop-2.2.0/confMAHOUT-JOB: /opt/hadoop/mahout-distribution-0.9/mahout-examples-0.9-job.jarUnknown program '--help' chosen.Valid program names are:  arff.vector: : Generate Vectors from an ARFF file or directory  baumwelch: : Baum-Welch algorithm for unsupervised HMM training  canopy: : Canopy clustering  cat: : Print a file or resource as the logistic regression models would see it  cleansvd: : Cleanup and verification of SVD output  clusterdump: : Dump cluster output to text  clusterpp: : Groups Clustering Output In Clusters  cmdump: : Dump confusion matrix in HTML or text formats  concatmatrices: : Concatenates 2 matrices of same cardinality into a single matrix  cvb: : LDA via Collapsed Variation Bayes (0th deriv. approx)  cvb0_local: : LDA via Collapsed Variation Bayes, in memory locally.  evaluateFactorization: : compute RMSE and MAE of a rating matrix factorization against probes  fkmeans: : Fuzzy K-means clustering  hmmpredict: : Generate random sequence of observations by given HMM  itemsimilarity: : Compute the item-item-similarities for item-based collaborative filtering  kmeans: : K-means clustering  lucene.vector: : Generate Vectors from a Lucene index  lucene2seq: : Generate Text SequenceFiles from a Lucene index  matrixdump: : Dump matrix in CSV format  matrixmult: : Take the product of two matrices  parallelALS: : ALS-WR factorization of a rating matrix  qualcluster: : Runs clustering experiments and summarizes results in a CSV  recommendfactorized: : Compute recommendations using the factorization of a rating matrix  recommenditembased: : Compute recommendations using item-based collaborative filtering  regexconverter: : Convert text files on a per line basis based on regular expressions  resplit: : Splits a set of SequenceFiles into a number of equal splits  rowid: : Map SequenceFile<Text,VectorWritable> to {SequenceFile<IntWritable,VectorWritable>, SequenceFile<IntWritable,Text>}  rowsimilarity: : Compute the pairwise similarities of the rows of a matrix  runAdaptiveLogistic: : Score new production data using a probably trained and validated AdaptivelogisticRegression model  runlogistic: : Run a logistic regression model against CSV data  seq2encoded: : Encoded Sparse Vector generation from Text sequence files  seq2sparse: : Sparse Vector generation from Text sequence files  seqdirectory: : Generate sequence files (of Text) from a directory  seqdumper: : Generic Sequence File dumper  seqmailarchives: : Creates SequenceFile from a directory containing gzipped mail archives  seqwiki: : Wikipedia xml dump to sequence file  spectralkmeans: : Spectral k-means clustering  split: : Split Input data into test and train sets  splitDataset: : split a rating dataset into training and probe parts  ssvd: : Stochastic SVD  streamingkmeans: : Streaming k-means clustering  svd: : Lanczos Singular Value Decomposition  testnb: : Test the Vector-based Bayes classifier  trainAdaptiveLogistic: : Train an AdaptivelogisticRegression model  trainlogistic: : Train a logistic regression using stochastic gradient descent  trainnb: : Train the Vector-based Bayes classifier  transpose: : Take the transpose of a matrix  validateAdaptiveLogistic: : Validate an AdaptivelogisticRegression model against hold-out data set  vecdist: : Compute the distances between a set of Vectors (or Cluster or Canopy, they must fit in memory) and a list of Vectors  vectordump: : Dump vectors from a sequence file to text  viterbi: : Viterbi decoding of hidden states from given output states sequence[andy@localhost bin]$ 

5：mahout使用准备：

准备数据：
测试数据下载地址：

http://archive.ics.uci.edu/ml/databases/synthetic_control/synthetic_control.data

下载完后，将数据放入$MAHOUT_HOME文件下
创建测试目录
创建测试目录testdata，并将数据导入到testdata中 
    

 $ cd $HADOOP_HOME/bin/

$ hadoop fs -mkdir testdata #

$ hadoop fs -put $MAHOUT_HOME/synthetic_control.data testdata

使用kmeans算法

$ hadoop jar /home/hadoop/mahout-distribution-0.7/mahout-examples-0.7-job.jar org.apache.mahout.clustering.syntheticcontrol.kmeans.Job

查看结果

$ hadoop fs -lsr output

$ hadoop fs －get output $MAHOUT_HOME/result

$ cd $MAHOUT_HOME/example/result

$ ls

如上图所示表示安装成功！