Interrupting a stateful session bean in use

[mike.nardone]

In the project I am working on, there is a method call which takes in several parameters and then calls a stateful session bean to perform some heavy-duty processing on the server-side. This processing consumes a (very) non-trivial amount of memory. Our client software allows the user to cancel this process, but the cancellation is currently implemented by simply dropping the client's reference to the SFSB and getting a handle to a new bean. The old SFSB continues its processing until it finishes, which consumes an awful lot of memory I would like to reclaim. I can't directly destroy the bean while it's processing because I get a ConcurrentAccessException. Is there a way to interrupt the method this SFSB while running without hitting the concurrent access issue?

-Mike

[waynebaylor]

if you have access to the sfsb code you could try adding a "stop processing" flag. when the client wants to cancel you can set the flag, which the sfsb would be checking periodically.

[mike.nardone]

The issue there is that the client can't set a flag in the SFSB directly because the bean is in use by the server at the same time you'd want to set the flag (hence the concurrent access exception).

[mike.nardone]

Excuse me, I misunderstood. We are currently setting a flag in the client. However, it's a single method call in teh SFSB that eats a ton of processing, and so while we can have the bean check the flag between methods, that doesn't help us as much as we might like.