[jboss-jira] [JBoss JIRA] (WFLY-11563) Race condition in PersistenceUnitServiceImpl when the service is being stopped

[James Perkins (Jira)]

James Perkins created WFLY-11563:
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             Summary: Race condition in PersistenceUnitServiceImpl when the service is being stopped
                 Key: WFLY-11563
                 URL: https://issues.jboss.org/browse/WFLY-11563
             Project: WildFly
          Issue Type: Bug
          Components: JPA / Hibernate
            Reporter: James Perkins
            Assignee: Scott Marlow


There's a race in the {{PersistenceUnitServiceImpl.stop()}} as the service is stopped in a thread. The {{entityManagerFactory}} is a volatile variable not read into a local variable and may be set to {{null}} if stop is invoked twice. The {{proxyBeanManager}} should be looked as well. 

{code}
16:38:59,190 ERROR [org.jboss.as.jpa] (ServerService Thread Pool -- 26) WFLYJPA0007: Failed to stop persistence unit service jpa_classTransformerTestWithMockProvider.ear/ejbjar.jar#mypc: java.lang.NullPointerException
	at com.sun.proxy.$Proxy101.isOpen(Unknown Source)
	at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$2$1.run(PersistenceUnitServiceImpl.java:255)
	at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$2$1.run(PersistenceUnitServiceImpl.java:236)
	at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:649)
	at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$2.run(PersistenceUnitServiceImpl.java:281)
	at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
	at java.lang.Thread.run(Thread.java:748)
	at org.jboss.threads.JBossThread.run(JBossThread.java:485)
{code}



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