不多说，直接上干货！
首先，别在windows下搭建什么，安装什么Cygwin啊！直接在linux，对于企业里推荐用CentOS6.5，在学校里用Ubuntu。
Mahout安装所需软件清单：
软件 版本 说明
操作系统 CentOS6.5 64位
JDK jdk1.7.0_79
Hadoop 2.6.0
Mahout mahout-distribution-0.8
为什么采用这个版本，而不是0.9及其以后的版本，是因为差别有点大，比如fpg关联规则算法。以及网上参考资料少
说在前面的话，
关于Mahout的安装配置，这里介绍两种方式：其一，下载源码（直接下载源码或者通过svn下载源码都可以），然后使用Maven进行编译；其二，下载完整包进行解压缩。这里我使用的是完整包进行解压缩安装。
一、 mahout-distribution-0.8.tar.gz的下载
http://archive.apache.org/dist/mahout/0.8/
我这里，以稳定版本mahout-0.9为例
当然，这里也可以使用wget命令在线下载，很简单，不多说。
二、 mahout-distribution-0.8.tar.gz的安装
1、先新建好目录
我一般喜欢在/usr/loca/下新建
[root@djt002 local]# pwd
/usr/local
[root@djt002 local]# ll
total
drwxr-xr-x. root root Sep bin
drwxr-xr-x. hadoop hadoop Mar : data
drwxr-xr-x. hadoop hadoop Feb : elasticsearch
drwxr-xr-x. root root Sep etc
drwxr-xr-x. hadoop hadoop Jan : flume
drwxr-xr-x. root root Sep games
drwxr-xr-x. hadoop hadoop Jan : hadoop
drwxr-xr-x. hadoop hadoop Mar : hbase
drwxr-xr-x. hadoop hadoop Mar : hive
drwxr-xr-x. root root Sep include
drwxr-xr-x. hadoop hadoop Jan : jdk
drwxr-xr-x. root root Sep lib
drwxr-xr-x. root root Sep lib64
drwxr-xr-x. root root Sep libexec
drwxr-xr-x. root root Sep sbin
drwxr-xr-x. root root Jan : share
drwxr-xr-x. hadoop hadoop Mar : sqoop
drwxr-xr-x. root root Sep src
[root@djt002 local]# mkdir mahout
[root@djt002 local]# ll
total
drwxr-xr-x. root root Sep bin
drwxr-xr-x. hadoop hadoop Mar : data
drwxr-xr-x. hadoop hadoop Feb : elasticsearch
drwxr-xr-x. root root Sep etc
drwxr-xr-x. hadoop hadoop Jan : flume
drwxr-xr-x. root root Sep games
drwxr-xr-x. hadoop hadoop Jan : hadoop
drwxr-xr-x. hadoop hadoop Mar : hbase
drwxr-xr-x. hadoop hadoop Mar : hive
drwxr-xr-x. root root Sep include
drwxr-xr-x. hadoop hadoop Jan : jdk
drwxr-xr-x. root root Sep lib
drwxr-xr-x. root root Sep lib64
drwxr-xr-x. root root Sep libexec
drwxr-xr-x root root Apr : mahout
drwxr-xr-x. root root Sep sbin
drwxr-xr-x. root root Jan : share
drwxr-xr-x. hadoop hadoop Mar : sqoop
drwxr-xr-x. root root Sep src
[root@djt002 local]# chown -R hadoop:hadoop mahout
[root@djt002 local]# ll
total
drwxr-xr-x. root root Sep bin
drwxr-xr-x. hadoop hadoop Mar : data
drwxr-xr-x. hadoop hadoop Feb : elasticsearch
drwxr-xr-x. root root Sep etc
drwxr-xr-x. hadoop hadoop Jan : flume
drwxr-xr-x. root root Sep games
drwxr-xr-x. hadoop hadoop Jan : hadoop
drwxr-xr-x. hadoop hadoop Mar : hbase
drwxr-xr-x. hadoop hadoop Mar : hive
drwxr-xr-x. root root Sep include
drwxr-xr-x. hadoop hadoop Jan : jdk
drwxr-xr-x. root root Sep lib
drwxr-xr-x. root root Sep lib64
drwxr-xr-x. root root Sep libexec
drwxr-xr-x hadoop hadoop Apr : mahout
drwxr-xr-x. root root Sep sbin
drwxr-xr-x. root root Jan : share
drwxr-xr-x. hadoop hadoop Mar : sqoop
drwxr-xr-x. root root Sep src
[root@djt002 local]#
2、上传mahout压缩包
[root@djt002 local]# su hadoop
[hadoop@djt002 local]$ cd mahout/
[hadoop@djt002 mahout]$ pwd
/usr/local/mahout
[hadoop@djt002 mahout]$ ll
total
[hadoop@djt002 mahout]$ rz [hadoop@djt002 mahout]$ ll
total
-rw-r--r-- hadoop hadoop Apr : mahout-distribution-0.8.tar.gz
[hadoop@djt002 mahout]$
3、解压
[hadoop@djt002 mahout]$ pwd
/usr/local/mahout
[hadoop@djt002 mahout]$ ll
total
-rw-r--r-- hadoop hadoop Apr : mahout-distribution-0.8.tar.gz
[hadoop@djt002 mahout]$ tar -zxvf mahout-distribution-0.9.tar.gz
4、删除压缩包和赋予用户组
[hadoop@djt002 mahout]$ pwd
/usr/local/mahout
[hadoop@djt002 mahout]$ ll
total
drwxrwxr-x hadoop hadoop Apr : mahout-distribution-0.8
-rw-r--r-- hadoop hadoop Apr : mahout-distribution-0.8.tar.gz
[hadoop@djt002 mahout]$ rm mahout-distribution-0.9.tar.gz
[hadoop@djt002 mahout]$ ll
total
drwxrwxr-x hadoop hadoop Apr : mahout-distribution-0.8
[hadoop@djt002 mahout]$
5、mahout的配置
[root@djt002 mahout-distribution-0.8]# pwd
/usr/local/mahout/mahout-distribution-0.8
[root@djt002 mahout-distribution-0.8]# vim /etc/profile
#mahout
export MAHOUT_HOME=/usr/local/mahout/mahout-distribution-0.8
export MAHOUT_HOME_CONF_DIR=/usr/local/mahout/mahout-distribution-0.8/conf
export PATH=$PATH:$MAHOUT_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib:$MAHOUT_HOME/lib:$JRE_HOME/lib:$CLASSPATH
[root@djt002 mahout-distribution-0.9]# source /etc/profile
认识下mahout的目录结构
[hadoop@djt002 mahout-distribution-0.8]$ pwd
/usr/local/mahout/mahout-distribution-0.8
[hadoop@djt002 mahout-distribution-0.8]$ ll
total
drwxrwxr-x hadoop hadoop Apr : bin
drwxrwxr-x hadoop hadoop Apr : buildtools
drwxr-xr-x hadoop hadoop Jul conf
drwxrwxr-x hadoop hadoop Apr : core
drwxrwxr-x hadoop hadoop Apr : distribution
drwxrwxr-x hadoop hadoop Apr : docs
drwxrwxr-x hadoop hadoop Apr : examples
drwxrwxr-x hadoop hadoop Apr : integration
drwxrwxr-x hadoop hadoop Apr : lib
-rw-r--r-- hadoop hadoop Jul LICENSE.txt
-rw-r--r-- hadoop hadoop Jul mahout-core-0.8.jar
-rw-r--r-- hadoop hadoop Jul mahout-core-0.8-job.jar
-rw-r--r-- hadoop hadoop Jul mahout-examples-0.8.jar
-rw-r--r-- hadoop hadoop Jul mahout-examples-0.8-job.jar
-rw-r--r-- hadoop hadoop Jul mahout-integration-0.8.jar
-rw-r--r-- hadoop hadoop Jul mahout-math-0.8.jar
drwxrwxr-x hadoop hadoop Apr : math
-rw-r--r-- hadoop hadoop Jul NOTICE.txt
-rw-r--r-- hadoop hadoop Jul README.txt
[hadoop@djt002 mahout-distribution-0.8]$
三、验证mahout是否安装成功
[hadoop@djt002 mahout-distribution-0.8]$ bin/mahout --help
Running on hadoop, using /usr/local/hadoop/hadoop-2.6./bin/hadoop and HADOOP_CONF_DIR=
MAHOUT-JOB: /usr/local/mahout/mahout-distribution-0.9/mahout-examples-0.9-job.jar
Unknown 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 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
[hadoop@djt002 mahout-distribution-0.9]$
出现上述的界面，说明mahout安装成功，因为，自动列出mahout已经实现的所有命令。
运行mahout自带的示例（确保hadoop集群已开启）
mahout中的算法大致可以分为三大类：
聚类，协同过滤和分类
其中
常用聚类算法有：canopy聚类，k均值算法（kmeans），模糊k均值，层次聚类，LDA聚类等
常用分类算法有：贝叶斯，逻辑回归，支持向量机，感知器，神经网络等
因为，我的版本是mahout-0.8，所以mahout-examples-0.8-job.jar。
以下是运行mahout自带的keans算法
$HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.8/mahout-examples-0.8-job.jar org.apache.mahout.clustering.syntheticcontrol.kmeans.Job 或者 以下是运行mahout自带的cnopy算法
$HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.8/mahout-examples-0.8-job.jar org.apache.mahout.clustering.syntheticcontrol.canopy.Job
[hadoop@djt002 mahout-distribution-0.9]$ $HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.9/mahout-examples-0.9-job.jar org.apache.mahout.clustering.syntheticcontrol.canopy.Job
// :: INFO canopy.Job: Running with default arguments
// :: INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:
// :: WARN mapreduce.JobSubmitter: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.
// :: INFO mapreduce.JobSubmitter: Cleaning up the staging area /tmp/hadoop-yarn/staging/hadoop/.staging/job_1493332712225_0001
Exception in thread "main" org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://djt002:9000/user/hadoop/testdata
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:)
at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:)
at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:)
at org.apache.hadoop.mapreduce.Job$.run(Job.java:)
at org.apache.hadoop.mapreduce.Job$.run(Job.java:)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:)
at org.apache.mahout.clustering.conversion.InputDriver.runJob(InputDriver.java:)
at org.apache.mahout.clustering.syntheticcontrol.canopy.Job.run(Job.java:)
at org.apache.mahout.clustering.syntheticcontrol.canopy.Job.main(Job.java:)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
at java.lang.reflect.Method.invoke(Method.java:)
at org.apache.hadoop.util.RunJar.run(RunJar.java:)
at org.apache.hadoop.util.RunJar.main(RunJar.java:)
[hadoop@djt002 mahout-distribution-0.9]$
准备测试数据
练习数据下载地址：
http://download.csdn.net/detail/qq1010885678/8582941
上面的练习数据是用来检测kmeans聚类算法的数据。
将练习数据（data.txt）上传到hdfs中对应的hdfs://djt002:9000/user/hadoop/testdata目录下即可。（这是样本数据集，可以适用各种算法）
我这里，上传测试数据。到我本地linux自己写的一个路径。（这里为了自己所需哈）
[hadoop@djt002 mahout]$ pwd
/usr/local/mahout
[hadoop@djt002 mahout]$ ll
total
drwxrwxr-x hadoop hadoop Apr : mahout-distribution-0.8
[hadoop@djt002 mahout]$ mkdir mahoutData
[hadoop@djt002 mahout]$ ll
total
drwxrwxr-x hadoop hadoop Apr : mahoutData
drwxrwxr-x hadoop hadoop Apr : mahout-distribution-0.8
[hadoop@djt002 mahout]$ cd mahoutData/
[hadoop@djt002 mahoutData]$ pwd
/usr/local/mahout/mahoutData
[hadoop@djt002 mahoutData]$ ll
total
[hadoop@djt002 mahoutData]$ rz
CC[hadoop@djt002 mahoutData]$ ll
total
[hadoop@djt002 mahoutData]$ rz [hadoop@djt002 mahoutData]$ ll
total
-rw-r--r-- hadoop hadoop Apr : data.txt
[hadoop@djt002 mahoutData]$
然后，将/usr/local/mahout/mahoutData/下的测试数据，上传到hdfs://djt002:9000/user/hadoop/testdata下
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop fs -put /usr/local/mahout/mahoutData/data.txt hdfs://djt002:9000/user/hadoop/testdata
或者 [hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop fs -copyFromLocal /usr/local/mahout/mahoutData/data.txt hdfs://djt002:9000/user/hadoop/testdata/ [hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop fs -ls hdfs://djt002:9000/user/hadoop/testdata/
-rw-r--r-- hadoop supergroup -- : hdfs://djt002:9000/user/hadoop/testdata
也许中间会出现，这个数据集，你会上传不了。解决方案如下
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop fs -put /usr/local/mahout/mahoutData/data.txt hdfs://djt002:9000/user/hadoop/testdata/
put: `hdfs://djt002:9000/user/hadoop/testdata': File exists
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop fs -rm hdfs://djt002:9000/user/hadoop/testdata/
// :: INFO fs.TrashPolicyDefault: Namenode trash configuration: Deletion interval = minutes, Emptier interval = minutes.
Deleted hdfs://djt002:9000/user/hadoop/testdata
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop fs -mkdir hdfs://djt002:9000/user/hadoop/testdata/
[hadoop@djt002 mahoutData]$
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop fs -put /usr/local/mahout/mahoutData/data.txt hdfs://djt002:9000/user/hadoop/testdata/
[hadoop@djt002 mahoutData]$
使用kmeans算法
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.8/mahout-examples-0.8-job.jar org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
注意，是不需输入路径和输出路径的啊!（自带的jar包里都已经写死了的）
（注意：如果你是选择用mahout压缩包里自带的kmeans算法的话，则它的输入路径是testdata是固定死的，
即hdfs:djt002://9000/user/hadoop/testdata/ ）
并且每次运行hadoop都要删掉原来的output目录！
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop fs -rm -r hdfs://djt002:9000/user/hadoop/output/*
....
由于聚类算法是一种迭代的过程（之后会讲解）
所以，它会一直重复的执行mr任务到符合要求（这其中的过程可能有点久。。。）
Kmeans运行结果如下：
, 7.311, 10.611, 6.924, 3.440, 9.465, 4.764, 2.838, 8.807, 1.960, 2.864, 6.728, 0.369, 1.374, -0.167, 2.125, 8.306, 4.908, -0.432]
1.0 : [distance=29.095866076790845]: = [30.817, 28.079, 24.628, 23.933, 28.660, 25.704, 27.501, 23.513, 30.377, 27.595, 22.938, 26.684, 25.208, 26.834, 22.931, 17.732, 17.544, 24.167, 25.602, 19.269, 14.978, 17.223, 18.962, 22.281, 17.035, 23.789, 14.878, 18.113, 10.981, 11.661, 14.331, 19.942, 11.175, 10.714, 15.675, 15.468, 16.010, 14.972, 15.101, 15.131, 15.154, 10.492, 14.754, 5.222, 5.393, 13.606, 11.775, 6.307, 3.370, 10.107, 7.779, 10.209, 1.493, 4.822, 0.019, 8.019, -0.279, -0.049, 5.757, 2.718]
1.0 : [distance=24.674726284993667]: = [31.347, 28.245, 34.275, 29.885, 30.573, 32.373, 24.031, 24.057, 24.099, 23.777, 28.993, 29.853, 26.485, 29.245, 28.145, 22.528, 20.390, 20.570, 27.921, 18.786, 22.144, 20.163, 17.616, 19.541, 20.342, 22.061, 21.358, 23.951, 13.447, 12.974, 18.406, 17.349, 17.425, 11.041, 14.912, 10.147, 16.731, 9.845, 14.840, 18.283, 18.426, 10.059, 16.760, 14.187, 14.301, 14.277, 12.823, 15.574, 10.789, 10.957, 8.361, 4.116, 3.732, 3.508, 2.288, 9.768, 9.661, 2.183, 6.933, 4.670]
1.0 : [distance=31.366016794511612]: = [35.439, 24.104, 27.345, 28.982, 34.488, 27.952, 32.550, 25.255, 29.188, 24.766, 29.235, 20.520, 19.745, 27.306, 29.226, 27.510, 21.879, 25.199, 19.470, 19.373, 19.371, 26.519, 19.270, 18.184, 24.926, 15.082, 17.402, 14.351, 22.618, 22.343, 22.627, 15.136, 16.385, 13.479, 21.914, 21.072, 18.025, 15.178, 19.715, 11.919, 18.650, 16.242, 12.783, 17.710, 17.715, 8.372, 13.702, 7.537, 9.190, 11.098, 13.714, 8.595, 11.006, 15.031, 10.061, 7.613, 13.295, 12.292, 12.478, 11.095]
1.0 : [distance=26.598263851474357]: = [26.273, 31.229, 29.741, 34.208, 33.329, 33.610, 31.072, 22.530, 28.587, 21.130, 23.557, 28.078, 27.546, 25.825, 18.454, 25.903, 24.448, 24.003, 23.199, 22.158, 17.711, 23.922, 20.550, 15.913, 17.699, 13.883, 17.494, 16.360, 20.679, 11.790, 18.424, 10.493, 11.001, 17.994, 11.673, 11.014, 11.437, 16.197, 16.435, 7.331, 15.089, 16.779, 14.449, 9.551, 11.331, 10.564, 5.992, 8.369, 11.402, 7.865, 2.526, 4.632, 9.335, 6.772, 3.018, 3.675, 0.455, 5.362, 6.945, 7.901]
1.0 : [distance=27.50313693276032]: = [26.148, 30.828, 27.122, 31.797, 26.812, 24.681, 31.379, 22.047, 22.034, 24.293, 30.875, 22.493, 30.889, 19.167, 19.199, 27.696, 17.370, 27.648, 23.842, 26.493, 23.635, 23.577, 20.884, 18.786, 18.898, 18.091, 22.021, 20.674, 23.890, 12.646, 18.448, 17.732, 17.897, 14.679, 13.598, 12.689, 19.832, 12.489, 9.745, 18.990, 18.820, 16.517, 12.024, 14.131, 13.394, 15.473, 11.140, 5.094, 15.265, 14.651, 8.299, 3.163, 12.039, 4.893, 7.552, 12.315, 9.581, 5.462, 2.984, 8.981]
1.0 : [distance=41.63476648186727]: = [30.822, 26.592, 32.747, 31.626, 31.853, 32.258, 34.720, 25.605, 24.215, 29.830, 28.270, 30.519, 27.139, 32.953, 29.208, 27.265, 31.003, 24.601, 27.746, 29.257, 25.375, 9.397, 11.854, 18.179, 11.058, 12.507, 14.945, 19.796, 9.565, 19.152, 11.940, 16.022, 17.441, 10.963, 10.996, 8.929, 15.033, 8.991, 20.548, 17.140, 13.223, 14.981, 10.412, 19.554, 19.192, 13.297, 15.799, 11.817, 12.925, 12.827, 13.102, 13.449, 11.540, 17.939, 8.543, 13.994, 15.765, 16.096, 16.662, 8.968]
1.0 : [distance=47.92825575495409]: = [35.675, 32.252, 33.359, 31.057, 24.062, 29.028, 24.791, 27.460, 25.859, 28.450, 30.435, 27.962, 28.948, 27.236, 28.649, 29.507, 35.871, 31.607, 25.408, 30.508, 32.454, 26.580, 27.593, 34.277, 27.145, 33.938, 27.016, 12.593, 10.910, 4.930, 4.463, 5.002, 11.772, 15.086, 10.525, 13.935, 10.900, 15.151, 8.885, 14.374, 13.364, 13.354, 6.827, 14.907, 4.364, 15.200, 14.254, 8.839, 13.155, 7.695, 8.300, 15.678, 14.164, 10.802, 9.084, 5.791, 10.142, 16.019, 12.784, 12.437]
1.0 : [distance=48.93716831670561]: = [31.775, 33.510, 25.615, 27.700, 24.828, 33.067, 34.310, 28.609, 34.490, 35.751, 25.563, 26.692, 34.970, 30.595, 26.545, 35.828, 29.338, 24.678, 33.323, 33.962, 34.928, 16.294, 8.878, 12.901, 7.906, 6.083, 6.624, 11.364, 9.335, 11.368, 10.111, 15.291, 13.921, 10.583, 15.977, 16.325, 11.815, 11.675, 11.011, 16.201, 9.244, 15.829, 10.276, 16.145, 13.675, 9.326, 10.849, 6.772, 17.498, 7.973, 16.450, 9.991, 6.178, 16.111, 17.548, 13.860, 10.801, 8.851, 10.028, 8.332]
1.0 : [distance=45.830951493743164]: = [28.636, 35.554, 28.989, 26.883, 30.280, 35.294, 33.550, 32.722, 30.094, 32.951, 34.356, 33.583, 27.756, 33.049, 25.218, 31.894, 34.318, 25.636, 32.570, 24.817, 27.464, 12.408, 9.314, 12.147, 8.343, 7.502, 11.223, 12.910, 10.207, 14.853, 6.479, 11.333, 14.162, 5.533, 14.142, 15.040, 13.506, 5.263, 6.361, 13.789, 13.502, 8.490, 11.222, 15.391, 9.330, 15.925, 13.675, 13.507, 12.027, 12.400, 11.421, 8.011, 12.951, 8.780, 11.031, 12.124, 12.020, 12.910, 8.291, 10.597]
1.0 : [distance=48.07002341109426]: = [34.335, 30.938, 31.953, 31.146, 24.519, 24.393, 27.696, 29.874, 26.767, 33.089, 31.371, 26.233, 26.383, 35.661, 32.663, 27.685, 29.277, 31.761, 34.650, 24.940, 33.434, 26.849, 28.714, 26.581, 34.825, 34.026, 8.823, 12.634, 12.694, 6.279, 13.644, 16.651, 18.078, 7.975, 9.274, 9.208, 12.879, 12.729, 6.976, 17.832, 13.330, 6.326, 12.131, 11.842, 16.716, 10.425, 9.445, 14.400, 15.696, 11.028, 10.608, 15.190, 9.076, 17.909, 9.846, 15.013, 13.913, 11.743, 11.699, 10.152]
// :: INFO clustering.ClusterDumper: Wrote clusters
[hadoop@djt002 mahoutData]$
mahout无异常！！！
注意：执行完这个kmeans算法之后产生的文件按普通方式是查看不了的，看到的只是一堆莫名其妙的数据！！！
查看聚类分析的结果：
需要用mahout的seqdumper命令来下载到本地linux上才能查看正常结果。
[hadoop@djt002 ~]$ $MAHOUT_HOME/bin/mahout seqdumper -i /user/hadoop/output/data/part-m-00000 -o ~/res.txt
[hadoop@djt002 ~]$ $MAHOUT_HOME/bin/mahout seqdumper -i /user/hadoop/output/data/part-m- -o ~/res.txt
Running on hadoop, using /usr/local/hadoop/hadoop-2.6./bin/hadoop and HADOOP_CONF_DIR=
MAHOUT-JOB: /usr/local/mahout/mahout-distribution-0.9/mahout-examples-0.9-job.jar
// :: INFO common.AbstractJob: Command line arguments: {--endPhase=[], --input=[/user/hadoop/output/data/part-m-], --output=[/home/hadoop/res.txt], --startPhase=[], --tempDir=[temp]}
// :: INFO driver.MahoutDriver: Program took ms (Minutes: 0.14583333333333334)
[hadoop@djt002 ~]$ ll
total
-rw-r--r--. hadoop hadoop Feb : anagram.jar
drwxrwxr-x. hadoop hadoop Mar : app
drwxr-xr-x. hadoop hadoop Jan : Desktop
drwxrwxr-x. hadoop hadoop Feb : djt
drwxr-xr-x. hadoop hadoop Jan : Documents
drwxr-xr-x. hadoop hadoop Jan : Downloads
drwxrwxr-x. hadoop hadoop Jan : flume
drwxr-xr-x. hadoop hadoop Jan : Music
drwxr-xr-x. hadoop hadoop Jan : Pictures
drwxr-xr-x. hadoop hadoop Jan : Public
-rw-rw-r-- hadoop hadoop Apr : res.txt
drwxr-xr-x. hadoop hadoop Jan : Templates
drwxrwxr-x. hadoop hadoop Mar : tvdata
drwxr-xr-x. hadoop hadoop Jan : Videos
[hadoop@djt002 ~]$ sz res.txt
Input Path: /user/hadoop/output/data/part-m-
Key class: class org.apache.hadoop.io.Text Value Class: class org.apache.mahout.math.VectorWritable
Key: : Value: {:28.7812,:26.6311,:29.1495,:28.9207,:35.6541,:33.7596,:35.2479,:25.3969,:25.0293,:33.0292,:34.9424,:26.5235,:24.5556,:26.1927,:36.0253,:29.5054,:25.4652,:29.27,:29.2171,:32.8717,:32.8717,:27.7849,:26.1203,:28.0721,:28.4353,:34.9879,:34.9318,:25.04,:31.2834,:29.747,:26.2353,:34.4632,:28.9167,:31.0558,:33.3182,:32.4721,:28.9964,:24.3437,:31.4333,:34.1173,:35.5344,:35.4973,:27.0443,:27.1159,:33.7431,:32.337,:32.0036,:26.3693,:25.8717,:31.3381,:25.7744,:27.6623,:30.7326,:28.1584,:33.3759,:34.2553,:30.9772,:28.9402,:34.5249,:25.0466}
Key: : Value: {:24.8923,:32.5981,:26.9414,:27.8789,:28.3038,:31.5926,:27.9516,:31.4861,:34.0765,:31.9874,:25.0701,:35.6273,:31.0205,:33.1089,:27.4867,:30.4719,:32.1005,:24.1311,:31.1887,:27.5415,:24.488,:35.5469,:33.6472,:26.3458,:26.1471,:26.4244,:33.6564,:33.6615,:32.8217,:29.4047,:26.5301,:25.741,:25.5511,:32.8357,:24.1491,:28.4661,:24.8578,:30.4686,:32.5577,:27.5918,:35.9519,:28.9861,:25.7906,:31.6595,:26.6418,:31.391,:25.9562,:31.4167,:26.691,:27.5532,:30.7447,:35.4102,:35.1422,:31.5203,:34.2484,:28.5322,:28.5157,:30.6213,:27.811,:28.4331}
Key: : Value: {:31.3987,:24.246,:31.6114,:27.8613,:26.9631,:28.5491,:25.2239,:24.9717,:27.3086,:24.3323,:28.8778,:32.5614,:26.5966,:27.4809,:28.2572,:32.3851,:29.5446,:31.4781,:27.2587,:31.8387,:35.0625,:32.4358,:31.5137,:29.6082,:25.2919,:29.9897,:25.5772,:30.2001,:24.2905,:27.1717,:31.0561,:30.6316,:31.2452,:31.4391,:24.2075,:31.351,:26.3583,:26.6814,:33.6318,:31.5717,:32.6293,:34.1444,:35.1253,:27.3068,:25.5387,:26.5819,:28.0861,:34.1202,:29.343,:26.3983,:26.9337,:31.0308,:35.0173,:24.7131,:33.9002,:27.3057,:26.8059,:35.9725,:24.0455,:32.5434}
Key: : Value: {:25.774,:28.3714,:35.9346,:27.97,:32.3667,:25.2702,:31.4549,:28.132,:27.5587,:29.2806,:24.824,:35.0966,:28.7261,:24.3749,:29.9578,:31.6264,:27.3659,:25.0102,:28.9916,:28.9564,:24.3037,:29.4268,:25.5265,:35.769,:26.9752,:32.5492,:34.6156,:34.2021,:25.6033,:31.156,:26.8908,:30.5262,:26.5077,:34.3336,:27.6083,:30.9827,:31.3209,:32.2279,:34.6292,:24.314,:32.4185,:34.2054,:29.8557,:27.32,:28.2979,:30.2773,:29.3849,:32.0968,:25.3069,:35.4209,:33.3303,:25.3679,:35.3155,:35.1146,:24.8938,:24.7381,:27.8433,:31.8725,:30.4447,:31.5787}
Key: : Value: {:27.1798,:33.4129,:29.6526,:24.6555,:26.9245,:28.9446,:24.5596,:35.798,:33.1247,:24.6081,:28.0295,:31.1274,:27.9601,:24.5119,:35.4154,:33.0321,:31.1057,:31.6565,:25.3216,:27.9634,:29.4686,:34.9446,:35.8773,:29.1348,:30.2123,:29.9993,:35.3375,:33.2025,:25.6264,:34.9244,:27.9072,:29.2498,:27.4335,:33.833,:33.9931,:34.2149,:35.111,:32.6355,:27.7218,:33.1739,:31.2651,:32.3223,:33.204,:34.2366,:35.7198,:34.862,:35.0757,:26.5173,:31.0179,:33.6928,:28.6486,:31.3701,:35.9497,:30.8644,:33.1276,:25.9481,:33.3094,:24.2875,:25.1472,:27.576}
....
....
当然，你可以去看输出目录下/user/hadoop/output的其他的，比如
看的是/user/hadoop/output/data/下的。
使用canopy算法
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.8/mahout-examples-0.8-job.jar org.apache.mahout.clustering.syntheticcontrol.canopy.Job
这里不多赘述。
使用dirichlet 算法
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.8/mahout-examples-0.8-job.jar org.apache.mahout.clustering.syntheticcontrol.dirichlet.Job
这里不多赘述。
使用meanshift算法
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.8/mahout-examples-0.8-job.jar org.apache.mahout.clustering.syntheticcontrol.meanshift.Job
这里不多赘述。
总结
mahout压缩包，给我们的默认输入路径是/user/hadoop/testdata 和 输出路径是 /user/hadoop/output
其实，我们是自己可以跟上自定义的输入路径和自定义输出路径的。
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.8/mahout-examples-0.8-job.jar org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
[hadoop@djt002 mahoutData]$ $HADOOP_HOME/bin/hadoop jar /usr/local/mahout/mahout-distribution-0.8/mahout-examples-0.8-job.jar org.apache.mahout.clustering.syntheticcontrol.kmeans.Job -i /user/hadoop/mahoutData/data.txt -o /user/hadoop/output