在单节点群集上运行Hadoop示例时出错

我正在运行由hadoop提供的字数统计示例。下面是我得到的错误：在单节点群集上运行Hadoop示例时出错

-bash-4.1$ ./hadoop jar /home/chanders/Hadoop/bin/hadoop-examples-0.20.203.0.jar wordcount /usr/temp_hadoop /usr/output 
Warning: Maximum heap size rounded up to 1024 MB 
Warning: Maximum heap size rounded up to 1024 MB 
Exception in thread "main" java.io.IOException: Error opening job jar: /home/chanders/Hadoop/bin/hadoop-examples-0.20.203.0.jar 
    at org.apache.hadoop.util.RunJar.main(RunJar.java:90) 
Caused by: java.util.zip.ZipException: error in opening zip file 
    at java.util.zip.ZipFile.open(Native Method) 
    at java.util.zip.ZipFile.<init>(ZipFile.java:129) 
    at java.util.jar.JarFile.<init>(JarFile.java:141) 
    at java.util.jar.JarFile.<init>(JarFile.java:78) 
    at org.apache.hadoop.util.RunJar.main(RunJar.java:88) 
-bash-4.1$ ^C 
-bash-4.1$ ./hadoop jar /home/chanders/Hadoop/bin/hadoop*examples*.jar wordcount /usr/temp_hadoop /usr/output 
Warning: Maximum heap size rounded up to 1024 MB 
Warning: Maximum heap size rounded up to 1024 MB 
Exception in thread "main" java.io.IOException: Error opening job jar: /home/chanders/Hadoop/bin/hadoop*examples*.jar 
    at org.apache.hadoop.util.RunJar.main(RunJar.java:90) 
Caused by: java.util.zip.ZipException: error in opening zip file 
    at java.util.zip.ZipFile.open(Native Method) 
    at java.util.zip.ZipFile.<init>(ZipFile.java:129) 
    at java.util.jar.JarFile.<init>(JarFile.java:141) 
    at java.util.jar.JarFile.<init>(JarFile.java:78) 
    at org.apache.hadoop.util.RunJar.main(RunJar.java:88)

约我安装的信息：我跟着从Michaeal诺尔的链接Here 的安装说明，唯一的变化是，我还没有创建一个独立的Hadoop的用户。我在登录时使用它。

来源

2011-07-29 Chander Shivdasani

有史以来最愚蠢的错误。我为jar文件提供的链接出错。我知道了。谢谢 –