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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/01/24 03:22:00 UTC

[jira] [Commented] (SPARK-23199) improved Removes repetition from group expressions in Aggregate

    [ https://issues.apache.org/jira/browse/SPARK-23199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16336833#comment-16336833 ] 

Apache Spark commented on SPARK-23199:
--------------------------------------

User 'heary-cao' has created a pull request for this issue:
https://github.com/apache/spark/pull/20375

> improved Removes repetition from group expressions in Aggregate
> ---------------------------------------------------------------
>
>                 Key: SPARK-23199
>                 URL: https://issues.apache.org/jira/browse/SPARK-23199
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: caoxuewen
>            Priority: Major
>
> Currently, all Aggregate operations will go into RemoveRepetitionFromGroupExpressions, but there is no group expression or there is no duplicate group expression in group expression, we not need copy for logic plan.



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