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From ericl <>
Subject [GitHub] spark pull request: [SPARK-8774] [ML] Add R model formula with bas...
Date Tue, 14 Jul 2015 23:41:06 GMT
Github user ericl commented on a diff in the pull request:
    --- Diff: mllib/src/main/scala/org/apache/spark/ml/feature/VectorAssembler.scala ---
    @@ -116,7 +116,7 @@ class VectorAssembler(override val uid: String)
         if (schema.fieldNames.contains(outputColName)) {
           throw new IllegalArgumentException(s"Output column $outputColName already exists.")
    -    StructType(schema.fields :+ new StructField(outputColName, new VectorUDT, false))
    +    StructType(schema.fields :+ new StructField(outputColName, new VectorUDT, true))
    --- End diff --
    I noticed that the schema of transform() has it as nullable, so probably transformSchema()
should also. One alternative is to make transform() mark the vector as non-null, but I am
not exactly sure how to do that.

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