[jboss-jira] [JBoss JIRA] (WFLY-12446) Memory leak in StatelessSessionComponent

[Brian Stansberry (Jira)]

    [ https://issues.jboss.org/browse/WFLY-12446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13776506#comment-13776506 ] 

Brian Stansberry commented on WFLY-12446:
-----------------------------------------

Perhaps the problem is here:

https://github.com/wildfly/wildfly/blob/master/ejb3/src/main/java/org/jboss/as/ejb3/component/pool/PooledInstanceInterceptor.java#L64

combined with here:

https://github.com/wildfly/wildfly/blob/master/ejb3/src/main/java/org/jboss/as/ejb3/component/pool/PooledInstanceInterceptor.java#L73

The inner catch block discards and then the outer one discards again. Only one bean got removed from the pool (i.e. the StrictMaxPool.pool ConcurrentLinkedQueue) but the semaphore gets decremented twice. 

> Memory leak in StatelessSessionComponent
> ----------------------------------------
>
>                 Key: WFLY-12446
>                 URL: https://issues.jboss.org/browse/WFLY-12446
>             Project: WildFly
>          Issue Type: Bug
>          Components: EJB
>    Affects Versions: 17.0.1.Final
>            Reporter: Joerg Baesner
>            Assignee: Cheng Fang
>            Priority: Major
>         Attachments: playground-jee8.zip
>
>
> When running the attached reproducer application and doing a memory analysis afterwards, it looks like a memory leak, e. g.
> {code}
> One instance of "org.jboss.as.ejb3.component.stateless.StatelessSessionComponent" loaded by "org.jboss.modules.ModuleClassLoader @ 0x5e0fbc2e0" occupies 936,593,520 (96.13%) bytes. The memory is accumulated in one instance of "java.util.concurrent.ConcurrentLinkedQueue$Node" loaded by "<system class loader>".
> {code}



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