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https://issues.apache.org/jira/browse/SPARK-53608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18036638#comment-18036638
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Dongjoon Hyun commented on SPARK-53608:
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We can add more new feature subtasks until the mid of November and more bug fix
subtasks until the official Apache Spark 4.1.0 release.
> Improve Python Aggregation UDFs
> -------------------------------
>
> Key: SPARK-53608
> URL: https://issues.apache.org/jira/browse/SPARK-53608
> Project: Spark
> Issue Type: Umbrella
> Components: Connect, PySpark, SQL
> Affects Versions: 4.1.0
> Reporter: Ruifeng Zheng
> Assignee: Ruifeng Zheng
> Priority: Major
> Fix For: 4.1.0
>
>
> 1, optimize the data exchange in Grouped UDFs, e.g. apply arrow batching;
> 2, introduce new iterator API to process the data within a group;
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