[jboss-jira] [JBoss JIRA] (WFLY-9849) Hibernate session related leak on module undeployment

[Joni Syri (JIRA)]

Joni Syri created WFLY-9849:
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             Summary: Hibernate session related leak on module undeployment
                 Key: WFLY-9849
                 URL: https://issues.jboss.org/browse/WFLY-9849
             Project: WildFly
          Issue Type: Bug
    Affects Versions: 11.0.0.Final
         Environment: * Ubuntu 16.04.3 LTS
* OpenJDK 1.8.0_151
* Wildfly 11.0.0.Final

Seems to occur at least on CentOS 7/OpenJDK 1.8.0_151 also.
            Reporter: Joni Syri
            Assignee: Jason Greene


In some cases it seems that removing deployment from the Wildfly, doesn't free up {{org.hibernate.internal.SessionFactoryImpl}}- instance related to the deployment. (plus some other Hibernate related classes). This can be seen by taking memory dump with VisualVM and looking up {{SessionFactoryImpl}} instances. 

This leads to cumulative memory leak in cases, where application is repeatedly deployed/undeployed (or updated).




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