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https://issues.apache.org/jira/browse/SPARK-41858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17653935#comment-17653935
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Apache Spark commented on SPARK-41858:
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User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/39362
> Fix ORC reader perf regression due to DEFAULT value feature
> -----------------------------------------------------------
>
> Key: SPARK-41858
> URL: https://issues.apache.org/jira/browse/SPARK-41858
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: Dongjoon Hyun
> Priority: Blocker
>
> A huge ORC reader perf regression is detected by SPARK-41782. The root cause
> was SPARK-39862.
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