Github user manishamde commented on the pull request:
https://github.com/apache/spark/pull/1290#issuecomment-61436212
@bgreeven Another general suggestion: consider adding logging to the code.
It goes a long way in debugging errors and get statuses on long running job.
Check DecisionTree/RandomForest/GradientBoosting for example. We need to add
more logging to LogisticRegression (object GradientDescent extends Logging but
there are no logs there) as well but I guess that's a separate PR.
cc: @mengxr @jkbradley
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