[jboss-user] [JBossCache] - Re: Problem with ShutdownHook

[bstansberry@jboss.com]

Another issue with the shutdown hook I'm seeing with Hibernate testing is that the hook doesn't get removed in internalStop().  JBC should keep a ref to the hook and remove it in internal stop; otherwise:

1) The hook executes at vm shutdown even though the cache was previously stopped/destroyed.  That currently just causes a DEBUG log, but it's prone to breakage.
2) Until that happens you've leaked a ref to the CacheImpl to the shutdown hook thread.

Might want to make the hook impl a bit more sophisticated so internalStop() can check if it is executing -- i.e. don't call Runtime.removeShutdownHook if it is the hook itself that calls internalStop().

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