Re: [hibernate-dev] intermittent NPE during an AS7 testsuite run (with Hibernate 4.0.0.Beta1)
Could it be some thread concurrency visibility?
Since it's a concurrent hashmap, I'd venture it's accessed concurrently :)
Try and make the variable final (or volatile) to ensure proper visibility across threads.
On 22 juin 2011, at 02:44, Scott Marlow wrote:
I'm not sure if we will see this NPE again but found the location
interesting. I wanted to report the failure in case it happens again in
the future or anyone else is interested in playing detective for
mysteries like this. ;)
The exception call stack is here http://pastie.org/2104060
It looks to me like AbstractServiceRegistryImpl.serviceBindingMap is
null for some reason. It makes me wonder if
AbstractServiceRegistryImpl.destroy() was called prematurely for some
reason (for some unexpected reason).
I wanted to mention the NPE here in case it happens again, so we can see
what is in common with this one. Next time, we will have to capture the
AS server.log output which might have additional clues but didn't this time.
Scott
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