This is with TomEE plus 7.0.5 I'm getting /Bean ... has been undeployed/ exception on shutdown, which is preventing orderly cleanup. The issue appears to be that a POJO implementing Runnable is scheduled for periodic execution; that POJO was created with a reference to a @Stateless bean; and the @Stateless bean is undeployed before the POJO completes execution.
"Supervisor" is a @Singleton. Supervisor injects, via @Resource, a ManagedScheduledExecutorService. I don't do any configuration on this service; I just accept what the container gives me. "Processor" is a @Stateless bean that does all sorts of work including entity management, transactions, etc. Supervisor obtains an instance of Processor via @Inject. "Runner" is a POJO that implements Runnable. One of its constructor method accepts an instance of Processor. (as an aside, The run method of Runner checks for Thread.currentThread().isInterrupted and returns immediately if true. It also catches InterruptedException (which might be thrown by some of the blocking methods it invokes), and calls Thread.currentThread().interrupt() and returns.) To get the work done on a regular basis, Supervisor creates an instance of Runner, passing Processor as an argument to its constructor, and then uses the ManagedScheduledExecutorService to run with fixed delay. Supervisor keeps a list of all the Runner tasks it has created. Supervisor has a stop() method that performs task.cancel(true) on every Runner task it has created. I have tried, alternatively, annotating the stop method with @PreDestroy, or explicitly invoking it from a ServletContextListener. At shutdown, it looks like Processor is being undeployed before the tasks in Supervisor are canceled. It appears that the container doesn't know that Processor needs to be kept deployed while the Runner tasks are still active. This happens before the Supervisor's stop() method is invoked: I'm having a hard time reducing this to a test case I can provide. -- Sent from: http://tomee-openejb.979440.n4.nabble.com/TomEE-Dev-f982480.html
