srowen commented on a change in pull request #15622: [SPARK-18092][ML] Fix
column prediction type error
URL: https://github.com/apache/spark/pull/15622#discussion_r242002585
##########
File path:
mllib/src/main/scala/org/apache/spark/ml/evaluation/MulticlassClassificationEvaluator.scala
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@@ -76,7 +76,9 @@ class MulticlassClassificationEvaluator @Since("1.5.0")
(@Since("1.5.0") overrid
SchemaUtils.checkNumericType(schema, $(labelCol))
val predictionAndLabels =
- dataset.select(col($(predictionCol)),
col($(labelCol)).cast(DoubleType)).rdd.map {
+ dataset.select(col($(predictionCol)).cast(DoubleType),
col($(labelCol)).cast(DoubleType))
Review comment:
Ditto?
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