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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-11092) hadoop shell commands should print usage if not given a class
Date Mon, 15 Sep 2014 13:56:34 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-11092?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer updated HADOOP-11092:
--------------------------------------
    Status: Patch Available  (was: Open)

> hadoop shell commands should print usage if not given a class
> -------------------------------------------------------------
>
>                 Key: HADOOP-11092
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11092
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: scripts
>            Reporter: Bruno Mahé
>            Assignee: Allen Wittenauer
>         Attachments: HADOOP-11092.patch, HDFS-2565.patch, HDFS-2565.patch
>
>
> [root@bigtop-fedora-15 ~]# hdfs foobar
> Exception in thread "main" java.lang.NoClassDefFoundError: foobar
> Caused by: java.lang.ClassNotFoundException: foobar
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
>         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
> Could not find the main class: foobar. Program will exit.
> Instead of loading any class, it would be nice to explain the command is not valid and
to call print_usage()



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