[ 
https://issues.apache.org/jira/browse/SPARK-35079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Takeshi Yamamuro resolved SPARK-35079.
--------------------------------------
    Fix Version/s: 3.2.0
                   3.1.2
       Resolution: Fixed

> Transform with udf gives incorrect result
> -----------------------------------------
>
>                 Key: SPARK-35079
>                 URL: https://issues.apache.org/jira/browse/SPARK-35079
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.1.1
>            Reporter: koert kuipers
>            Priority: Minor
>             Fix For: 3.1.2, 3.2.0
>
>
> i think this is a correctness bug in spark 3.1.1
> the behavior is correct in spark 3.0.1
> in spark 3.0.1:
> {code:java}
> scala> import spark.implicits._
> scala> import org.apache.spark.sql.functions._
> scala> val x = Seq(Seq("aa", "bb", "cc")).toDF
> x: org.apache.spark.sql.DataFrame = [value: array<string>]
> scala> x.select(transform(col("value"), col => udf((_: 
> String).drop(1)).apply(col))).show
> +---------------------------------------------------+
> |transform(value, lambdafunction(UDF(lambda 'x), x))|
> +---------------------------------------------------+
> |                                          [a, b, c]|
> +---------------------------------------------------+
> {code}
> in spark 3.1.1:
> {code:java}
> scala> import spark.implicits._
> scala> import org.apache.spark.sql.functions._
> scala> val x = Seq(Seq("aa", "bb", "cc")).toDF
> x: org.apache.spark.sql.DataFrame = [value: array<string>]
> scala> x.select(transform(col("value"), col => udf((_: 
> String).drop(1)).apply(col))).show
> +---------------------------------------------------+
> |transform(value, lambdafunction(UDF(lambda 'x), x))|
> +---------------------------------------------------+
> |                                          [c, c, c]|
> +---------------------------------------------------+
> {code}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org

Reply via email to