[jboss-jira] [JBoss JIRA] Commented: (EJBTHREE-1330) EJB timer service should use a thread pool to avoid OOM

[Galder Zamarreno (JIRA)]

    [ http://jira.jboss.com/jira/browse/EJBTHREE-1330?page=comments#action_12410885 ] 
            
Galder Zamarreno commented on EJBTHREE-1330:
--------------------------------------------

A different timer service will likely required for EJB 3.1 and that
might include clustered support, so there's a slight chance existing 
EJB timer service won't be changed.

Need to verify with Dimitris.

> EJB timer service should use a thread pool to avoid OOM
> -------------------------------------------------------
>
>                 Key: EJBTHREE-1330
>                 URL: http://jira.jboss.com/jira/browse/EJBTHREE-1330
>             Project: EJB 3.0
>          Issue Type: Bug
>          Components: pool
>    Affects Versions: AS 4.2.2.GA, AS 5.0.0.Beta4
>            Reporter: Galder Zamarreno
>         Assigned To: Galder Zamarreno
>            Priority: Minor
>
> The default EJB timer service used by the EJB3 layer is based on 
> org.jboss.ejb3.timerservice.jboss.JBossTimerServiceFactory which delegates 
> to the standard org.jboss.ejb.txtimer.EJBTimerService. 
> For EJB3 beans using the EJB timer service the thread local pool should not be used. 
> Since the current EJB timer service creates a new thread for each timer being created, the 
> thread local pool will create a matching instance of the bean for that thread. Thus the number 
> of active instances in total can effectively grow unchecked and thus an OOM will occur.

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