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https://jira.codehaus.org/browse/JBEHAVE-756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Hammant resolved JBEHAVE-756.
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Resolution: Fixed
> ParameterConverters not threadsafe
> ----------------------------------
>
> Key: JBEHAVE-756
> URL: https://jira.codehaus.org/browse/JBEHAVE-756
> Project: JBehave
> Issue Type: Bug
> Components: Core
> Reporter: Paul Hammant
> Assignee: Paul Hammant
> Priority: Minor
> Fix For: 3.6.1
>
>
> Jeff Caswell's patch applied:
> We have been having a number of issues with story parameter conversion and
> number format errors in a multithreaded environment.
> This was tracked back to the java.text.NumberFormat instance held by the
> ParameterConverters NumberConverter inner class.
> The constructor is only run once when a number of stories are launched and
> the instance is used by all the stories in the run.
> I suspect there may be other issues affecting this, however by converting the
> NumberFormat to ThreadLocal storage has solved the problem here.
> The patch is pretty much self explanitory, the only aspect that may not
> immediately seem obvious is that the NumberFormat passed in on the
> constructor was itself constructed with the users preferred Locale. It is for
> this reason that I have treated it as the 'preferred format' and cloned it
> for the thread local copy. Also I did not issue an explicit remove since
> tests are run as a relatively short lived batch job and I did not feel that
> there was any reason to worry about an associated memory leak.
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