Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/12809#discussion_r62116077
--- Diff:
examples/src/main/scala/org/apache/spark/examples/mllib/RegressionMetricsExample.scala
---
@@ -18,22 +18,22 @@
package org.apache.spark.examples.mllib
-import org.apache.spark.{SparkConf, SparkContext}
// $example on$
import org.apache.spark.mllib.evaluation.RegressionMetrics
-import org.apache.spark.mllib.regression.LinearRegressionWithSGD
-import org.apache.spark.mllib.util.MLUtils
+import org.apache.spark.mllib.linalg.Vector
+import org.apache.spark.mllib.regression.{LabeledPoint,
LinearRegressionWithSGD}
// $example off$
-import org.apache.spark.sql.SQLContext
+import org.apache.spark.sql.SparkSession
object RegressionMetricsExample {
def main(args: Array[String]): Unit = {
- val conf = new SparkConf().setAppName("RegressionMetricsExample")
- val sc = new SparkContext(conf)
- val sqlContext = new SQLContext(sc)
+ val spark =
SparkSession.builder.appName("RegressionMetricsExample").getOrCreate()
// $example on$
// Load the data
- val data = MLUtils.loadLibSVMFile(sc,
"data/mllib/sample_linear_regression_data.txt").cache()
+ val data = spark
+
.read.format("libsvm").load("data/mllib/sample_linear_regression_data.txt")
+ .rdd.map(row => LabeledPoint(row.getDouble(0),
row.get(1).asInstanceOf[Vector]))
+ .cache()
--- End diff --
Yes~
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