[jboss-jira] [JBoss JIRA] (AS7-4675) Memory leak when reading EJB 2.1 CMP EntityBeans
Stuart Douglas (JIRA)
jira-events at lists.jboss.org
Mon Apr 30 20:02:17 EDT 2012
[ https://issues.jboss.org/browse/AS7-4675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689038#comment-12689038 ]
Stuart Douglas commented on AS7-4675:
-------------------------------------
I really doubt the timeout interceptors are the cause of the problem. They are basically the same as view interceptors, i.e. stateless and there should only be 1 set created per EJB.
I think the real problem would be elsewhere.
> Memory leak when reading EJB 2.1 CMP EntityBeans
> ------------------------------------------------
>
> Key: AS7-4675
> URL: https://issues.jboss.org/browse/AS7-4675
> Project: Application Server 7
> Issue Type: Bug
> Components: EJB
> Affects Versions: 7.1.1.Final
> Environment: Windows 7 Pro SP1 (64bit); JDK 1.6.0_31 (64bit); Oracle Database 11g Release 11.1.0.6.0 - 64bit Production; AS71.1Final / AS71.2 latest build
> Reporter: Klaus Benary
> Assignee: jaikiran pai
>
> After reading 12000 EJB 2.1 EntityBeans in a test application there are about 5 million Interceptor[] arrays firmely bound in the heap. A heap dump shows this as a typical reference chain:
> GC Root: ServiceContainerImpl$ServiceThread
> ServiceContainerImpl$ServiceThread.container = ServiceContainerImpl
> ServiceContainerImpl.registry = UnlockedReadHashMap
> UnlockedReadHashMap.table = AtomicReferenceArray
> AtomicReferenceArray.array = Object[16384]
> Object[6209] = UnlockedReadHashMap$Item[3]
> UnlockedReadHashMap$Item[1] = UnlockedReadHashMap$Item
> UnlockedReadHashMap$Item.value = ServiceRegistrationImpl
> ServiceRegistrationImpl.instance = ServiceControllerImpl
> ServiceControllerImpl.serviceValue = ImmediateValue
> ImmediateValue.value = TimedObjectInvokerImpl
> TimedObjectInvokerImpl.timeoutInterceptors = HashMap
> HashMap.table = HashMap$Entry[128]
> HashMap$Entry[123] = HashMap$Entry
> HashMap$Entry.value = ChainedInterceptor
> ChainedInterceptor.interceptors = Arrays$ArrayList
> Arrays$ArrayList.a = Interceptor[6]
> The number of bound objects keeps growing when reading more EntityBeans - even wehn reading the same beans again.
> Even after undeploy of the application the
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