[jira] [Commented] (SPARK-25829) remove duplicated map keys with last wins policy

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-25829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16708648#comment-16708648 ] 

Apache Spark commented on SPARK-25829:
--------------------------------------

User 'mgaido91' has created a pull request for this issue:
https://github.com/apache/spark/pull/23217

> remove duplicated map keys with last wins policy
> ------------------------------------------------
>
>                 Key: SPARK-25829
>                 URL: https://issues.apache.org/jira/browse/SPARK-25829
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Wenchen Fan
>            Assignee: Wenchen Fan
>            Priority: Major
>             Fix For: 3.0.0
>
>
> In Spark SQL, we apply "earlier entry wins" semantic to duplicated map keys. e.g.
> {code}
> scala> sql("SELECT map(1,2,1,3)[1]").show
> +------------------+
> |map(1, 2, 1, 3)[1]|
> +------------------+
> |                 2|
> +------------------+
> {code}
> However, this handling is not applied consistently.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

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