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https://issues.apache.org/jira/browse/HADOOP-11092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14146210#comment-14146210
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Hudson commented on HADOOP-11092:
---------------------------------
FAILURE: Integrated in Hadoop-Yarn-trunk #690 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/690/])
HADOOP-11092. hadoop shell commands should print usage if not given a class
(aw) (aw: rev 3dc28e2052dd3a8e4cd5888fc4f9e7e37f8bc062)
* hadoop-hdfs-project/hadoop-hdfs/src/main/bin/hdfs
* hadoop-common-project/hadoop-common/CHANGES.txt
* hadoop-mapreduce-project/bin/mapred
* hadoop-common-project/hadoop-common/src/main/bin/hadoop-functions.sh
* hadoop-common-project/hadoop-common/src/main/bin/hadoop
* hadoop-yarn-project/hadoop-yarn/bin/yarn
> 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
> Fix For: 3.0.0
>
> 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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