[GitHub] spark pull request: [SPARK-4857] [CORE] Adds Executor membership e...

[ksakellis <gi...@git.apache.org>]

Github user ksakellis commented on the pull request:

    https://github.com/apache/spark/pull/3711#issuecomment-68778757
  
    @JoshRosen I actually couldn't make ExecutorInfo (now ExecutorDetails) a trait because the json protocol stuff requires a concrete object to deserialize events. The other option is to keep ExecutorDetails a trait and create a third object as a concrete implementation but that seemed to add unnecessary complexity. 


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