HyukjinKwon commented on a change in pull request #24961: [SPARK-28158][SQL]
Hive UDFs supports UDT type
URL: https://github.com/apache/spark/pull/24961#discussion_r304780492
##########
File path: mllib/src/test/scala/org/apache/spark/ml/linalg/VectorUDTSuite.scala
##########
@@ -44,4 +45,39 @@ class VectorUDTSuite extends SparkFunSuite {
assert(dataType.asInstanceOf[StructType].fields.map(_.dataType)
=== Seq(new VectorUDT, DoubleType))
}
+
+ test("SPARK-28158 Hive UDFs supports UDT type") {
+ val functionName = "Logistic_Regression"
+ val sql = spark.sql _
+ try {
+ val df = spark.read.format("libsvm").options(Map("vectorType" ->
"dense"))
+
.load(TestHive.getHiveFile("test-data/libsvm/sample_libsvm_data.txt").getPath)
+ df.createOrReplaceTempView("src")
+
+ // `Logistic_Regression` accepts features (with Vector type), and
returns the
+ // prediction value. To simplify the UDF implementation, the
`Logistic_Regression`
+ // will return 0.95d directly.
+ sql(
+ s"""
+ |CREATE FUNCTION Logistic_Regression
+ |AS 'org.apache.spark.sql.hive.LogisticRegressionUDF'
+ |USING JAR '${TestHive.getHiveFile("TestLogRegUDF.jar").toURI}'
Review comment:
What's the code in `TestLogRegUDF.jar`?
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