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https://issues.apache.org/jira/browse/SPARK-26808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16757880#comment-16757880
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Apache Spark commented on SPARK-26808:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/23719
> Pruned schema should not change nullability
> -------------------------------------------
>
> Key: SPARK-26808
> URL: https://issues.apache.org/jira/browse/SPARK-26808
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Liang-Chi Hsieh
> Priority: Minor
>
> We prune unnecessary nested fields from requested schema when reading
> Parquet. Now seems we don't keep original nullability in pruned schema. We
> should keep original nullability.
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