[jira] [Comment Edited] (SPARK-29776) rpad returning invalid value when parameter is empty

["Ankit Raj Boudh (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-29776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16972035#comment-16972035 ] 

Ankit Raj Boudh edited comment on SPARK-29776 at 11/12/19 5:32 AM:
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[https://github.com/apache/spark/pull/26477] , [~hyukjin.kwon] please review this PR


was (Author: ankitraj):
yes, today i will submit PR for this.

> rpad returning invalid value when parameter is empty
> ----------------------------------------------------
>
>                 Key: SPARK-29776
>                 URL: https://issues.apache.org/jira/browse/SPARK-29776
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: ABHISHEK KUMAR GUPTA
>            Priority: Major
>
> As per rpad definition
>  rpad
>  rpad(str, len, pad) - Returns str, right-padded with pad to a length of len
>  If str is longer than len, the return value is shortened to len characters.
>  *In case of empty pad string, the return value is null.*
> Below is Example
> In Spark:
> {code}
> 0: jdbc:hive2://10.18.19.208:23040/default> SELECT rpad('hi', 5, '');
> +----------------+
> | rpad(hi, 5, ) |
> +----------------+
> | hi |
> +----------------+
> {code}
> It should return NULL as per definition.
>  
> Hive behavior is correct as per definition it returns NULL when pad is empty String
> INFO : Concurrency mode is disabled, not creating a lock manager
> {code}
> +-------+
> | _c0 |
> +-------+
> | NULL |
> +-------+
> {code}
>  
>  
>  



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