srowen commented on a change in pull request #26803: [SPARK-30178][ML]
RobustScaler support large numFeatures
URL: https://github.com/apache/spark/pull/26803#discussion_r356551933
##########
File path: mllib/src/main/scala/org/apache/spark/ml/util/MetadataUtils.scala
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@@ -41,6 +41,24 @@ private[spark] object MetadataUtils {
}
}
+ /**
+ * Examine a schema to identify the number of features in a vector column.
+ * Returns None if the number of features is not specified.
+ */
+ def getNumFeatures(vectorSchema: StructField): Option[Int] = {
Review comment:
Was this also added in another PR you opened? just feel like I've seen it
before
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