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https://issues.apache.org/jira/browse/SPARK-48030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chao Sun reassigned SPARK-48030:
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Assignee: YE
> InternalRowComparableWrapper should cache rowOrdering to improve performace
> ---------------------------------------------------------------------------
>
> Key: SPARK-48030
> URL: https://issues.apache.org/jira/browse/SPARK-48030
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.5.1, 3.4.3
> Reporter: YE
> Assignee: YE
> Priority: Major
> Labels: pull-request-available
> Attachments: screenshot-1.png
>
>
> InternalRowComparableWrapper recreates row ordering for each output partition
> when SPJ is enabled. The row ordering is generated via codegen which is quite
> expensive and the output partitions might be quite large for production table
> such as hundreds of thousands partitions. We encountered this issue when
> applying SPJ with multiple large Iceberg tables and the plan phase took tens
> of minutes to complete.
> Attaching a screenshot to provide related stack trace:
> !screenshot-1.png!
> A simple fix for this would be caching the rowOrdering for
> InternalRowComparableWrapper as the datatype of the InternalRow is immutable
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