[jboss-jira] [JBoss JIRA] Created: (EJBTHREE-1750) Cluster node shutdown thats allow ongoing transactions to finish gracefully

[Galder Zamarreno (JIRA)]

Cluster node shutdown thats allow ongoing transactions to finish gracefully
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                 Key: EJBTHREE-1750
                 URL: https://jira.jboss.org/jira/browse/EJBTHREE-1750
             Project: EJB 3.0
          Issue Type: Feature Request
          Components: Clustering
            Reporter: Galder Zamarreno


Extend EJBTHREE-1116 so that in-flight transactions, specially those initiated remotely, are allowed to 
finish and no new transactions are allowed.

EJBTHREE-1116 just blocks the shutdown until in-flight *invocations* complete, not until *transactions* 
complete.  So a tx that's initiated on the client side that spans multiple invocations can see the node 
disappear in the middle.  Our clustered EJB proxies don't allow failover in the middle of a transaction, 
so that means the client sees a failure. 

EJBTHREE-1116, consider the following session bean method:

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
public void addUser(User user) {
  em.persist(user);
}

If the node is shutdown after a client has called addUser(), the transaction will indeed complete before 
the shutdown commences, but only as a side effect of waiting for the invocation to complete - the 
BlockContainerShutdownInterceptor sits in the front of the interceptor chain.  Subsequent requests to 
addUser(...) (i.e. new transactions) will fail once shutdown is initiated.

EJBTHREE-1116 doesn't cover transactions initiated from the client - nor invocations from one ejb to another 
(e.g. if addUser() tries to invoke a method on another ejb after shutdown is initiated).

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