Github user pwendell commented on the pull request: https://github.com/apache/spark/pull/1369#issuecomment-50955760 Hey on this one - it's helpful to see what this looks like - but my instinct is actually to move away from scala-logging entirely. We can upgrade ourselves, but all that does is force our users downstream to have to upgrade (even if they aren't using ml stuff at all), causing the same annoying headache as breeze is causing us. I'd prefer to just remove the (now very small) use of scala-logging and just continue to use the slf4j API directly. The mian benefit of scala-logging is the use of compile time macro's for some performance gain, but we've never in the entire history of Spark had any performance issues related to logging.
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