Github user joewitt commented on the pull request: https://github.com/apache/nifi/pull/354#issuecomment-211724253 Oleg off-list pointed out the finer concerns with the member variable. While it seems pretty far out it also seems like it is accurate. In reading https://docs.oracle.com/javase/tutorial/essential/concurrency/atomic.html and https://docs.oracle.com/javase/tutorial/essential/concurrency/memconsist.html And indeed I cannot think of anything the framework is doing with thread management or how those lifecycle calls work that would enforce/guarantee a happens-before relationship for these processor member variables. @markap14 can you? That said the licensing and thread safety issue of the transform itself are still needing to be addressed.
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