Github user srowen commented on a diff in the pull request: https://github.com/apache/spark/pull/19106#discussion_r139702788 --- Diff: mllib/src/main/scala/org/apache/spark/ml/classification/ProbabilisticClassifier.scala --- @@ -245,6 +244,8 @@ private[ml] object ProbabilisticClassificationModel { v.values(i) /= sum i += 1 } + } else { --- End diff -- You can just `require(sum > 0)` at the top instead.
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