Marcelo Vanzin created SPARK-11786:
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             Summary: Tone down error messages from AkkaRpcEnv
                 Key: SPARK-11786
                 URL: https://issues.apache.org/jira/browse/SPARK-11786
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 1.5.1, 1.6.0
            Reporter: Marcelo Vanzin
            Priority: Trivial


{{AkkaRpcEnv}} is very noisy about errors. Every time some actor disconnects, 
you see a big nasty error in the output. If you're running with dynamic 
allocation on, that can affect the usability of the spark-shell, for example.

And, to be frank, those "errors" are not interesting. If they're real errors, 
the endpoints responsible for monitoring them will take action and log real, 
useful error messages.



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