Till Rohrmann created FLINK-5176:
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Summary: Properly wait for component shutdown in Runner components
Key: FLINK-5176
URL: https://issues.apache.org/jira/browse/FLINK-5176
Project: Flink
Issue Type: Improvement
Components: Distributed Coordination
Reporter: Till Rohrmann
Priority: Minor
Currently, the different runners for the Flip-6 components {{JobMaster}},
{{ResourceManager}} and {{TaskExecutor}} don't wait until the component has
been shut down in their own {{shutDown}} method. The problem is that the
{{AkkaRpcService}} implements the {{RpcService#shutDown}} method via a
{{PoisonPill}} which is not executed synchronously. Instead we should obtain
the {{RpcEndpoint#getTerminationFutures}} and wait on the returned future (with
a given timeout).
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