[jira] [Created] (SPARK-22036) BigDecimal multiplication sometimes returns null

["Olivier Blanvillain (JIRA)" <ji...@apache.org>]

Olivier Blanvillain created SPARK-22036:
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             Summary: BigDecimal multiplication sometimes returns null
                 Key: SPARK-22036
                 URL: https://issues.apache.org/jira/browse/SPARK-22036
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.2.0
            Reporter: Olivier Blanvillain


The multiplication of two BigDecimal numbers sometimes returns null. This issue we discovered while doing property testing for the frameless project. Here is a minimal reproduction:

{{{
object Main extends App {
  import org.apache.spark.{SparkConf, SparkContext}
  import org.apache.spark.sql.SparkSession
  import spark.implicits._
  val conf = new SparkConf().setMaster("local[*]").setAppName("REPL").set("spark.ui.enabled", "false")
  val spark = SparkSession.builder().config(conf).appName("REPL").getOrCreate()
  implicit val sqlContext = spark.sqlContext

  case class X2(a: BigDecimal, b: BigDecimal)

  val ds = sqlContext.createDataset(List(X2(BigDecimal(-0.1267333984375), BigDecimal(-1000.1))))

  val result = ds.select(ds("a") * ds("b")).collect.head
  println(result) // [null]
}
}}}



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