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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/05/12 04:41:00 UTC

[jira] [Commented] (SPARK-35381) Fix lambda variable name issues in nested DataFrame functions in R APIs

    [ https://issues.apache.org/jira/browse/SPARK-35381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17343006#comment-17343006 ] 

Apache Spark commented on SPARK-35381:
--------------------------------------

User 'HyukjinKwon' has created a pull request for this issue:
https://github.com/apache/spark/pull/32517

> Fix lambda variable name issues in nested DataFrame functions in R APIs
> -----------------------------------------------------------------------
>
>                 Key: SPARK-35381
>                 URL: https://issues.apache.org/jira/browse/SPARK-35381
>             Project: Spark
>          Issue Type: Bug
>          Components: SparkR
>    Affects Versions: 3.1.1
>            Reporter: Hyukjin Kwon
>            Priority: Critical
>              Labels: correctness
>
> R's higher order functions also have the same problem with SPARK-34794:
> {code}
> df <- sql("SELECT array(1, 2, 3) as numbers, array('a', 'b', 'c') as letters")
> collect(select(
>   df,
>   array_transform("numbers", function(number) {
>     array_transform("letters", function(latter) {
>       struct(alias(number, "n"), alias(latter, "l"))
>     })
>   })
> ))
> {code}
> {code}
>   transform(numbers, lambdafunction(transform(letters, lambdafunction(struct(namedlambdavariable() AS n, namedlambdavariable() AS l), namedlambdavariable())), namedlambdavariable()))
> 1                                                                                                                                 a, a, b, b, c, c, a, a, b, b, c, c, a, a, b, b, c, c
> {code}



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