[GitHub] spark pull request: [SPARK-15606][core] Use a minimum of 3 dispatc...

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

Github user robbinspg commented on the pull request:

    https://github.com/apache/spark/pull/13355#issuecomment-222104521
  
    Although this patch resolves this particular issue I would echo the comment in https://github.com/apache/spark/pull/11728 by @zsxwing 
    
    {quote}
    However, the root cause is there are blocking calls in the event loops but not enough threads. This could happen in other places (such as netty, akka). Ideally, we should avoid blocking calls in all event loops. However, it's hard to figure out all of them in the huge code bases :(
    {quote}


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