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From Hızır Sefa İrken (Updated) (JIRA) <j...@apache.org>
Subject [jira] [Updated] (HDFS-2930) bin/hdfs should print a message when an invalid command is specified
Date Mon, 02 Apr 2012 20:59:29 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hızır Sefa İrken updated HDFS-2930:
-----------------------------------

    Attachment: HDFS-2930.patch

This patch gets rid of NoClass exception, instead prints a message. 

I can prepare a similar patch for 1.0 branch if needed.
                
> bin/hdfs should print a message when an invalid command is specified
> --------------------------------------------------------------------
>
>                 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
>              Labels: newbie
>         Attachments: HDFS-2930.patch
>
>
> 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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