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https://issues.apache.org/jira/browse/SPARK-27913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17073928#comment-17073928
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L. C. Hsieh commented on SPARK-27913:
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As we support schema merging in ORC by SPARK-11412, is this still an issue?
> Spark SQL's native ORC reader implements its own schema evolution
> -----------------------------------------------------------------
>
> Key: SPARK-27913
> URL: https://issues.apache.org/jira/browse/SPARK-27913
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.3.3
> Reporter: Owen O'Malley
> Priority: Major
>
> ORC's reader handles a wide range of schema evolution, but the Spark SQL
> native ORC bindings do not provide the desired schema to the ORC reader. This
> causes a regression when moving spark.sql.orc.impl from 'hive' to 'native'.
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