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https://issues.apache.org/jira/browse/HADOOP-9626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13677037#comment-13677037
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Suresh Srinivas commented on HADOOP-9626:
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+1 for the idea.
> Add an interface for any exception to serve up an Exit code
> -----------------------------------------------------------
>
> Key: HADOOP-9626
> URL: https://issues.apache.org/jira/browse/HADOOP-9626
> Project: Hadoop Common
> Issue Type: Improvement
> Components: util
> Affects Versions: 2.1.0-beta
> Reporter: Steve Loughran
> Priority: Minor
>
> Various exception included exit codes, specifically
> {{Shell.ExitCodeException}}, {{ExitUtils.ExitException()}}.
> If all exceptions that wanted to pass up an exit code to the main method
> implemented an interface with the method {{int getExitCode()}}, it'd be
> easier to extract exit codes from these methods in a unified way, so
> generating the desired exit codes on the application itself
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