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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1425) Rework the various programs in 'examples' to extend ToolBase
Date Thu, 24 May 2007 21:01:19 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12498833
] 

Owen O'Malley commented on HADOOP-1425:
---------------------------------------

I would make the trivial example be:

{code}
public class Foo {
  public static void main(String[] argv) throws Exception {
     JobClient.runJob(new OptionParser().fillInConfiguration(new JobConf(), argv));
  } 
}
{code}

JobClient likely should have another method that calls System.exit with the result of the
run, but that is neither here nor there. By making it a straight library, you have made the
code easier to understand with well separated areas of concern. There are also easy ways to
add additional parameters, etc.

> Rework the various programs in 'examples' to extend ToolBase 
> -------------------------------------------------------------
>
>                 Key: HADOOP-1425
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1425
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: examples
>            Reporter: Arun C Murthy
>         Assigned To: Enis Soztutar
>            Priority: Minor
>             Fix For: 0.14.0
>
>
> Ensuring all 'examples' extend ToolBase will make it easy to tweak various config params
(via -D switches for e.g.) while running the programs... 

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