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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2019/03/29 22:05:02 UTC

[jira] [Resolved] (SPARK-27314) Deduplicate exprIds for Union.

     [ https://issues.apache.org/jira/browse/SPARK-27314?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-27314.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.0

Issue resolved by pull request 24236
[https://github.com/apache/spark/pull/24236]

> Deduplicate exprIds for Union.
> ------------------------------
>
>                 Key: SPARK-27314
>                 URL: https://issues.apache.org/jira/browse/SPARK-27314
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Takuya Ueshin
>            Assignee: Takuya Ueshin
>            Priority: Major
>             Fix For: 3.0.0
>
>
> We have been having a potential problem with {{Union}} when the children have the same expression id in their outputs, which happens when self-union.



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