[jboss-jira] [JBoss JIRA] Created: (EJBTHREE-1116) Clustered container sees requests during shutdown

[Brian Stansberry (JIRA)]

Clustered container sees requests during shutdown
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                 Key: EJBTHREE-1116
                 URL: http://jira.jboss.com/jira/browse/EJBTHREE-1116
             Project: EJB 3.0
          Issue Type: Bug
          Components: Clustering
    Affects Versions: AS 4.2.2.GA
            Reporter: Brian Stansberry
         Assigned To: Brian Stansberry


See http://www.jboss.com/index.html?module=bb&op=viewtopic&t=123677 -- during undeploy the cache is being asked for beans after it has already gone into cleanup.  It should not be exposed to requests at this point.

A couple points:

1) StatefulContainer.stop() does this:

if (cache != null) cache.stop();
super.stop();

Basically the cache is stopped before anything else.

2) The HA versions of the old detached invokers included this kind of logic in invoke():

HATarget target = (HATarget)beanMap.get(invocation.getObjectName());
if (!target.invocationsAllowed ())
            throw new GenericClusteringException(GenericClusteringException.COMPLETED_NO, 
                                        "invocations are currently not allowed on this target"); 
.... else continue on and handle call

An HA proxy will catch the GenericClusteringException and fail over.

There is no equivalent interceptor in EJB3.  In the container stop() methods there is a usage of Dispatcher.singleton.unregisterTarget(...) which will lead to an exception being thrown if a call comes in for the container, and an HA proxy will catch that exception and fail over.  So, adding an interceptor to check the HATarget *may* not be necessary, if we are sure that Dispatcher.singleton.unregisterTarget(...)  is always called very early in the stop() process.




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