[jboss-jira] [JBoss JIRA] (WFLY-3238) JDBC Driver with two service provider entries causes problem

[jaikiran pai (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-3238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12960706#comment-12960706 ] 

jaikiran pai commented on WFLY-3238:
------------------------------------

It looks like this was recently fixed https://github.com/wildfly/wildfly/pull/6141 as part of https://issues.jboss.org/browse/WFLY-3218
                
> JDBC Driver with two service provider entries causes problem
> ------------------------------------------------------------
>
>                 Key: WFLY-3238
>                 URL: https://issues.jboss.org/browse/WFLY-3238
>             Project: WildFly
>          Issue Type: Enhancement
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 8.0.0.Final
>            Reporter: Jess Balint
>            Priority: Critical
>
> MySQL has recently added a second entry to the JDBC 4 service provider file (META-INF/services/java.sql.Driver). When adding the driver as a deployment, both driver classes are recognized and two driver instances are created. When adding the driver as a "core module", an exception is thrown stating that the driver name is a duplicate. It seems to be trying to create two driver instances with the same name, one for each entry in the service provider configuration.
> Here's the exception:
> 21:56:38,713 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 28) JBAS014612: Operation ("add") failed - address: ([
>     ("subsystem" => "datasources"),
>     ("jdbc-driver" => "mysql2")
> ]): org.jboss.msc.service.DuplicateServiceException: Service jboss.jdbc-driver.mysql2 is already registered
> 	at org.jboss.msc.service.ServiceRegistrationImpl.setInstance(ServiceRegistrationImpl.java:158) [jboss-msc-1.2.0.Final.jar:1.2.0.Final]
> 	at org.jboss.msc.service.ServiceControllerImpl.startInstallation(ServiceControllerImpl.java:235) [jboss-msc-1.2.0.Final.jar:1.2.0.Final]
> 	at org.jboss.msc.service.ServiceContainerImpl.install(ServiceContainerImpl.java:767) [jboss-msc-1.2.0.Final.jar:1.2.0.Final]
> 	at org.jboss.msc.service.ServiceTargetImpl.install(ServiceTargetImpl.java:223) [jboss-msc-1.2.0.Final.jar:1.2.0.Final]
> 	at org.jboss.msc.service.ServiceControllerImpl$ChildServiceTarget.install(ServiceControllerImpl.java:2401) [jboss-msc-1.2.0.Final.jar:1.2.0.Final]
> 	at org.jboss.msc.service.ServiceBuilderImpl.install(ServiceBuilderImpl.java:317) [jboss-msc-1.2.0.Final.jar:1.2.0.Final]
> 	at org.jboss.as.controller.OperationContextImpl$ContextServiceBuilder.install(OperationContextImpl.java:1418) [wildfly-controller-8.0.0.Final.jar:8.0.0.Final]
> 	at org.jboss.as.connector.subsystems.datasources.JdbcDriverAdd.startDriverServices(JdbcDriverAdd.java:160)
> 	at org.jboss.as.connector.subsystems.datasources.JdbcDriverAdd.performRuntime(JdbcDriverAdd.java:118)
> 	at org.jboss.as.controller.AbstractAddStepHandler$1.execute(AbstractAddStepHandler.java:75) [wildfly-controller-8.0.0.Final.jar:8.0.0.Final]
> 	at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:591) [wildfly-controller-8.0.0.Final.jar:8.0.0.Final]
> 	at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:469) [wildfly-controller-8.0.0.Final.jar:8.0.0.Final]
> 	at org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:273) [wildfly-controller-8.0.0.Final.jar:8.0.0.Final]
> 	at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:268) [wildfly-controller-8.0.0.Final.jar:8.0.0.Final]
> 	at org.jboss.as.controller.ParallelBootOperationStepHandler$ParallelBootTask.run(ParallelBootOperationStepHandler.java:343) [wildfly-controller-8.0.0.Final.jar:8.0.0.Final]
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_45]
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_45]
> 	at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_45]
> 	at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.1.Final.jar:2.1.1.Final]
> I have confirmed that even after this, there is one driver instance. If the driver class is given explicitly, the exception is not thrown.

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