[jboss-jira] [JBoss JIRA] (DROOLS-457) TaskModelProvider's ServiceLoader sync problem

[Mariano De Maio (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mariano De Maio updated DROOLS-457:
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    Attachment: test-case.zip


Test case project attachment
                
> TaskModelProvider's ServiceLoader sync problem
> ----------------------------------------------
>
>                 Key: DROOLS-457
>                 URL: https://issues.jboss.org/browse/DROOLS-457
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 6.0.0.Final, 6.0.1.Final, 6.1.0.Beta1, 6.1.0.Beta2, 6.1.0.Final
>            Reporter: Mariano De Maio
>            Assignee: Mark Proctor
>         Attachments: test-case.zip
>
>
> This bug was found related to jBPM6 components, but its solution needs to be implemented in the kie-internal project, hence we report it in this project.
> When the TaskModelProvider access the factory object, it iterates the service loader directly. Unfortunately, the ServiceLoader class states:
> "Instances of this class are not safe for use by multiple concurrent threads." (http://docs.oracle.com/javase/6/docs/api/java/util/ServiceLoader.html)
> This causes that environments that need to use the TaskModelProvider from different threads with no prior invocation.
> I'll add a maven test to reproduce the issue. We have also a solution we'll submit in a pull request

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