Sean Owen resolved SPARK-17505.
    Resolution: Won't Fix

> Add setBins for BinaryClassificationMetrics in mlllb/evaluation
> ---------------------------------------------------------------
>                 Key: SPARK-17505
>                 URL: https://issues.apache.org/jira/browse/SPARK-17505
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>            Reporter: Peng Meng
>            Priority: Minor
>   Original Estimate: 6h
>  Remaining Estimate: 6h
> Add a setBins method for BinaryClassificationMetrics.
> BinaryClassificationMetrics is a class in mllib/Evaluation. numBins is a key 
> attribute of it. If numBins greater than 0, then the curves (ROC curve, PR 
> curve) computed internally will be down-sampled to this many "bins". 
> It is useful to let the user set the numBins.

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