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Posted to issues@spark.apache.org by "L. C. Hsieh (Jira)" <ji...@apache.org> on 2021/03/03 01:10:00 UTC
[jira] [Resolved] (SPARK-34548) Remove unnecessary children from
Union under Distince and Deduplicate
[ https://issues.apache.org/jira/browse/SPARK-34548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
L. C. Hsieh resolved SPARK-34548.
---------------------------------
Fix Version/s: 3.2.0
Resolution: Fixed
Issue resolved by pull request 31656
[https://github.com/apache/spark/pull/31656]
> Remove unnecessary children from Union under Distince and Deduplicate
> ---------------------------------------------------------------------
>
> Key: SPARK-34548
> URL: https://issues.apache.org/jira/browse/SPARK-34548
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: L. C. Hsieh
> Assignee: L. C. Hsieh
> Priority: Major
> Fix For: 3.2.0
>
>
> If there are any duplicate child of Union under Distince and Deduplicate, it can be removed to simplify query plan.
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