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From "Emmanuel Bourg (JIRA)" <>
Subject [jira] Commented: (CLI-209) OptionBuilder is not thread-safe
Date Tue, 28 Sep 2010 07:53:34 GMT


Emmanuel Bourg commented on CLI-209:

Just curious, what is the use case that would require making CLI thread safe? A typical application
uses CLI on its main thread to parse the command line parameters, that's far from a multi
thread scenario.

> OptionBuilder is not thread-safe
> --------------------------------
>                 Key: CLI-209
>                 URL:
>             Project: Commons CLI
>          Issue Type: Bug
>          Components: CLI-1.x
>    Affects Versions: 1.0, 1.1, 1.2
>         Environment: Windows XP, Java 6
>            Reporter: Thomas Herre
> Class OptionBuilder is not thread-safe.
> It uses one OptionBuilder instance without synchronizing access to it.
> If more than one thread uses OptionBuilder, that can result in invalid Options (suppose
a scheduler component).
> Don't know if this should be fixed. At least the Javadoc should mention the fact that
the class is not thread-safe.
> As a workaround, use constructor of class Option.

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