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From "Eli Collins (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2930) bin/hdfs should print a message when an invalid command is specified
Date Thu, 09 Feb 2012 22:24:57 GMT
bin/hdfs should print a message when an invalid command is specified
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                 Key: HDFS-2930
                 URL: https://issues.apache.org/jira/browse/HDFS-2930
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: tools
    Affects Versions: 0.23.1
            Reporter: Eli Collins


hdfs will currently give a NoClassDefFoundError stacktrace if there's a typo specifying the
command.

{noformat}
hadoop-0.24.0-SNAPSHOT $ ./bin/hdfs dfadmin
Exception in thread "main" java.lang.NoClassDefFoundError: dfadmin
Caused by: java.lang.ClassNotFoundException: dfadmin
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
{noformat}

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