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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3281) bin/hadoop script should check class name before running java
Date Fri, 18 Apr 2008 17:50:24 GMT
bin/hadoop script should check class name before running java
-------------------------------------------------------------

                 Key: HADOOP-3281
                 URL: https://issues.apache.org/jira/browse/HADOOP-3281
             Project: Hadoop Core
          Issue Type: Bug
          Components: scripts
            Reporter: Tsz Wo (Nicholas), SZE


When the first parameter ($1) cannot be matched with one of existing hadoop commnads, the
parameter will be considered as a class name and the script will pass it to java.  For examples,
{noformat}
bash-3.2$ ./bin/hadoop -version
java version "1.5.0_14"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_14-b03)
Java HotSpot(TM) Client VM (build 1.5.0_14-b03, mixed mode)
bash-3.2$ ./bin/hadoop -help   
Usage: java [-options] class [args...]
           (to execute a class)
   or  java [-options] -jar jarfile [args...]
           (to execute a jar file)
...
{noformat}
The behavior above is confusing.  We should check whether the parameter is a valid class name
before passing it to java.

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