Github user feynmanliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/8507#discussion_r38373099
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/classification/NaiveBayes.scala ---
@@ -202,17 +202,24 @@ object NaiveBayesModel extends
Loader[NaiveBayesModel] {
sc.parallelize(Seq(metadata), 1).saveAsTextFile(metadataPath(path))
// Create Parquet data.
- val dataRDD: DataFrame = sc.parallelize(Seq(data), 1).toDF()
- dataRDD.write.parquet(dataPath(path))
+ val dataRDD = sc.parallelize(Seq(Row(data.labels, data.pi,
data.theta, data.modelType)), 1)
+ sqlContext.createDataFrame(dataRDD,
schema).write.parquet(dataPath(path))
}
+ private val schema = StructType(
+ StructField("labels", ArrayType(DoubleType, containsNull = false),
nullable = false)::
+ StructField("pi", ArrayType(DoubleType, containsNull = false),
nullable = false)::
+ StructField("theta", ArrayType(
+ ArrayType(DoubleType, containsNull = false), containsNull =
false), nullable = false)::
+ StructField("modelType", StringType, nullable = false)::Nil)
--- End diff --
Use a `Seq()` here instead of cons-list
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