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https://issues.apache.org/jira/browse/SPARK-32238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17154283#comment-17154283
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Apache Spark commented on SPARK-32238:
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User 'Ngone51' has created a pull request for this issue:
https://github.com/apache/spark/pull/29050
> "Malformed class name" error from ScalaUDF
> ------------------------------------------
>
> Key: SPARK-32238
> URL: https://issues.apache.org/jira/browse/SPARK-32238
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0, 3.0.0
> Reporter: wuyi
> Priority: Major
>
> {code:java}
> object MalformedClassObject extends Serializable {
> class MalformedFunction extends (String => Int) with Serializable {
> override def apply(v1: String): Int = v1.toInt / 0
> }
> }
> Seq("20").toDF("col").select(udf(new
> MalformedFunction).apply(Column("col"))).collect()
> An exception or error caused a run to abort: Malformed class name
> java.lang.InternalError: Malformed class name
> at java.lang.Class.getSimpleName(Class.java:1330)
> at
> org.apache.spark.sql.catalyst.expressions.ScalaUDF.udfErrorMessage$lzycompute(ScalaUDF.scala:1157)
> at
> org.apache.spark.sql.catalyst.expressions.ScalaUDF.udfErrorMessage(ScalaUDF.scala:1155)
> at
> org.apache.spark.sql.catalyst.expressions.ScalaUDF.doGenCode(ScalaUDF.scala:1077)
> at
> org.apache.spark.sql.catalyst.expressions.Expression.$anonfun$genCode$3(Expression.scala:147)
> at scala.Option.getOrElse(Option.scala:189)
> at
> org.apache.spark.sql.catalyst.expressions.Expression.genCode(Expression.scala:142)
> at
> org.apache.spark.sql.catalyst.expressions.Alias.genCode(namedExpressions.scala:160)
> at
> org.apache.spark.sql.execution.ProjectExec.$anonfun$doConsume$1(basicPhysicalOperators.scala:69)
> ....
> {code}
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