[jboss-jira] [JBoss JIRA] Updated: (JBAS-3849) Duplicating _$$_javassist_ classes after remote - call - OutOfMemory: PermGen

[Piotr Tabor (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBAS-3849?page=all ]

Piotr Tabor updated JBAS-3849:
------------------------------

    JBoss Forum Reference: http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3975284

> Duplicating _$$_javassist_ classes after remote - call - OutOfMemory: PermGen
> -----------------------------------------------------------------------------
>
>                 Key: JBAS-3849
>                 URL: http://jira.jboss.com/jira/browse/JBAS-3849
>             Project: JBoss Application Server
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Remoting
>    Affects Versions: JBossAS-4.0.4.CR2, JBossAS-4.0.5.CR1, JBossAS-4.0.5.GA, JBossAS-4.0.4.GA
>         Environment:   	
> « Hide
> Linux Gentoo 2.6.18, JVM 1.5.0.08, 1.5.0.09, amd64
> RedHat Linux EE 4.0. JVM 1.5.0.09, intel 
> Windows XP, JVM 1.5.0.09, intel
>            Reporter: Piotr Tabor
>         Assigned To: Tom  Elrod
>            Priority: Blocker
>         Attachments: leaktest.zip.zip
>
>
> A simple test (Books/Users) to reproduce the problem.
> beantestclient - a simple test client application (runnable: com.newitech.beantest.ejb.Client)
> beantest - simple EJB 3 beans. 
> ==========================================================
> ANOTHER EXAMPLE AND IDEA OF BUG
> PermGen in EJB3 client aplication by remote interface.
> The application is as sample as it can be:
> -get remote interface of stateless EJB3 (by JNDI)
> - ask 1000 times to get a Collection (List) of 10 EntityBeans.
> After 255 there is OutOfMemory: PermGen.
> JVM options changes nothing (eventualy more PermSpace => longer run).
> The reason looks like the Javassist create lazyinitializer classes for every EntityBean retrived from the server.
> So: When I debug on server-side, I got before sending Entity to client:
> I got:
> myEntity[0].id=143534
> myEntity[0].flow=<FlowEntity_$$_javassist_7> 13434
> ...
> myEntity[0].user=<UserEntity_$$_javassist_15>...
> myEntity[0].stage=<StageEntity_$$_javassist_17>...
> And every remote call the class names (name)_$..._javassist_(index) got the same
> indexes (7,15,17) on server side (end every entity in returned collections of entities)
> But when I debug on client site - after return from remote call - the indexes of
> all returned entities are different (Each next increments index).
> So after first call I got:
> myEntity[0].id=143534
> myEntity[0].flow=<FlowEntity_$$_javassist_0>...
> ...
> myEntity[0].user=<UserEntity_$$_javassist_1>...
> myEntity[0].stage=<StageEntity_$$_javassist_2>...
> ...
> myEntity[1].id=143534
> myEntity[1].flow=<FlowEntity_$$_javassist_3>
> ...
> myEntity[1].user=<UserEntity_$$_javassist_4>...
> myEntity[1].stage=<StageEntity_$$_javassist_5>...
> ...
> After secund call:
> myEntity[0].id=143534
> myEntity[0].flow=<FlowEntity_$$_javassist_6>...
> ...
> myEntity[0].user=<UserEntity_$$_javassist_7>...
> myEntity[0].stage=<StageEntity_$$_javassist_8>...
> ...
> myEntity[1].id=143534
> myEntity[1].flow=<FlowEntity_$$_javassist_9>
> ...
> myEntity[1].user=<UserEntity_$$_javassist_10>...
> myEntity[1].stage=<StageEntity_$$_javassist_11>...
> ...
> And so on... ... and permGen after 260 iterations...

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