Java 当我通过Mahout运行k-Means时，始终显示此提示

代码：

错误提示：

hadoop jar /home/xnz/local/opt/apache-mahout-distribution-0.13.0/mahout-integration-0.13.0.jar \
    org.apache.mahout.clustering.conversion.InputDriver \
    -i /user/root/ -o /user/root/input/seqfile

---

从例外中可以清楚地看出。类路径中缺少

org.apache.commons.cli2

Jar。

为什么不使用mahout命令

bin/mahout kmeans

？但当前版本是CLI 1.4。来自，谢谢。

Exception in thread "main" java.lang.NoClassDefFoundError: 
    org/apache/commons/cli2/OptionException
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:278)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:214)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: java.lang.ClassNotFoundException: 
    org.apache.commons.cli2.OptionException
    at java.net.URLClassLoader$1.run(URLClassLoader.java:359)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:430)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:363)
    ...4 more
``