zhengruifeng opened a new pull request #24775: [SPARK-27925][ML] Better control numBins of curves in BinaryClassificationMetrics URL: https://github.com/apache/spark/pull/24775 ## What changes were proposed in this pull request? bring the grouping op forward into the sort op, and regard one partition as one bin. ## How was this patch tested? existing tests and modified tests (to test the case with > 1 partitions)
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