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From "David Bowen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-327) ToolBase calls System.exit
Date Tue, 11 Jul 2006 17:13:31 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-327?page=comments#action_12420372 ] 

David Bowen commented on HADOOP-327:

Agreed that the interface method needs to throw Exception.  I thought that you were disagreeing
with the changes to the more specific IOException in the implementing classes also.

> ToolBase calls System.exit
> --------------------------
>          Key: HADOOP-327
>          URL: http://issues.apache.org/jira/browse/HADOOP-327
>      Project: Hadoop
>         Type: Bug

>   Components: util
>     Versions: 0.4.0
>     Reporter: Owen O'Malley
>     Assignee: Hairong Kuang
>      Fix For: 0.5.0
>  Attachments: exit.patch
> The new ToolBase class calls System.exit when the main routine finishes. That will break
if the application uses threads that need to finish before the jvm exits. The normal semantics
is that the program doesn't finish execution until all of the non-daemon threads exit (including
the main one) and System.exit should never be called except for critical errors.

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