Github user aledsage commented on the pull request:
https://github.com/apache/incubator-brooklyn/pull/864#issuecomment-138865168
@alasdairhodge as discussed offline, I don't like it when the exception
thrown in one thread is then rethrown by another thread, without wrapping it.
If that is done, the exception thrown in the user's thread won't include
the user's stacktrace, so the user won't be able to tell what in their code was
executing when the exception happened. The avoidance of that confusion
justifies keeping the `InvocationTargetException`.
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