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https://issues.apache.org/jira/browse/SPARK-56045?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-56045:
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Fix Version/s: (was: 4.1.2)
> Parquet UNKNOWN Type Regression at Spark 4.1
> --------------------------------------------
>
> Key: SPARK-56045
> URL: https://issues.apache.org/jira/browse/SPARK-56045
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 4.1.0, 4.1.1
> Reporter: Ziya Mukhtarov
> Assignee: Ziya Mukhtarov
> Priority: Major
> Labels: parquet, parquetReader, pull-request-available
> Fix For: 4.2.0
>
>
> Since Spark 4.1, which includes
> [SPARK-54220|https://issues.apache.org/jira/browse/SPARK-54220] NullType
> support in Parquet, the Parquet reader behavior for files written by external
> engines have changed. If the file contains a column type with UNKNOWN logical
> type annotation, before we were inferring a type based on the physical type,
> but since Spark 4.1, we are inferring NullType. As it is a regression, we
> need to introduce a new flag to control this behavior, with the default value
> resulting in the old behavior.
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