Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/4259
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GitHub user tillrohrmann opened a pull request:
https://github.com/apache/flink/pull/4259
[FLINK-7105] Make ActorSystems non daemonic
In order to not having to explicitly wait on the termination of an
ActorSystem
in the main thread, we now create the ActorSystems in non-daemonic