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https://issues.apache.org/jira/browse/SPARK-35964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean R. Owen resolved SPARK-35964.
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Resolution: Invalid
> spark 3.1.1 version the method schema of class DataframeReader will lose
> the original type information of char/varchar
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-35964
> URL: https://issues.apache.org/jira/browse/SPARK-35964
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.1, 3.1.2
> Reporter: Sun BiaoBiao
> Priority: Major
>
> in spark 3.1.1 version, the method schema of class DataframeReader will
> lose the original type information of char/varchar
>
> !image-2021-07-01-14-54-49-922.png!
>
>
> !image-2021-07-01-14-55-03-117.png!
>
>
> It is expected that it can be placed in the metadata of the field, and the
> original type information can be obtained in subsequent processing
>
>
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