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Posted to issues@spark.apache.org by "Chao Sun (Jira)" <ji...@apache.org> on 2025/11/18 21:36:00 UTC

[jira] [Assigned] (SPARK-54383) InternalRowComparableWrapper schema cache lookups slowing planning time

     [ https://issues.apache.org/jira/browse/SPARK-54383?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chao Sun reassigned SPARK-54383:
--------------------------------

    Assignee: Chirag Singh

> InternalRowComparableWrapper schema cache lookups slowing planning time
> -----------------------------------------------------------------------
>
>                 Key: SPARK-54383
>                 URL: https://issues.apache.org/jira/browse/SPARK-54383
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 4.0.1
>            Reporter: Chirag Singh
>            Assignee: Chirag Singh
>            Priority: Major
>              Labels: pull-request-available
>
> For KeyGroupedPartitioned scans, the InternalRowComparableWrapper does a cache lookup of the current data types to create a schema and ordering for the given types. When there are a large number of partitions, this cache lookup (which occurs in many places once per partition) can become a bottleneck on physical planning.



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