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Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2026/02/15 19:25:01 UTC

[jira] [Closed] (SPARK-47897) ExpressionSet performance regression in scala 2.12

     [ https://issues.apache.org/jira/browse/SPARK-47897?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun closed SPARK-47897.
---------------------------------

> ExpressionSet performance regression in scala 2.12
> --------------------------------------------------
>
>                 Key: SPARK-47897
>                 URL: https://issues.apache.org/jira/browse/SPARK-47897
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.5.1
>            Reporter: Zhen Wang
>            Assignee: Zhen Wang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.5.2, 3.4.4
>
>
> After SPARK-38836, the `++` and `--` methods in ExpressionSet of scala 2.12 were removed, causing performance regression.



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