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Posted to issues@flink.apache.org by tillrohrmann <gi...@git.apache.org> on 2016/09/23 11:47:29 UTC

[GitHub] flink issue #2543: [FLINK-4606] [cluster management] Add watch mechanism on ...

Github user tillrohrmann commented on the issue:

    https://github.com/apache/flink/pull/2543
  
    The linked JIRA issue seems to be wrong.
    
    I'm not completely sure whether we want to add this functionality to the `RpcService` or not. At the moment it is easy to implement because we can rely on Akka's death watch functionality. But future implementations might work differently. Thus, we would be bound to reimplement the death watch functionality.
    
    Furthermore, once a target actor system has been marked as "dead" by the deathwatch it will be quarantined. If it was marked wrongly, then there is no way for the target actor system to talk to the watching system and vice versa.
    
    What's the benefit over having a separate service for the heartbeat like it is done in #2435?


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