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https://issues.apache.org/jira/browse/SPARK-42163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-42163:
-----------------------------------
Assignee: David Cashman
> Schema pruning fails on non-foldable array index or map key
> -----------------------------------------------------------
>
> Key: SPARK-42163
> URL: https://issues.apache.org/jira/browse/SPARK-42163
> Project: Spark
> Issue Type: Bug
> Components: Optimizer
> Affects Versions: 3.2.3
> Reporter: David Cashman
> Assignee: David Cashman
> Priority: Major
> Fix For: 3.4.0
>
>
> Schema pruning tries to extract selected fields from struct extractors. It
> looks through GetArrayItem/GetMapItem, but when doing so, it ignores the
> index/key, which may itself be a struct field. If it is a struct field that
> is not otherwise selected, and some other field of the same attribute is
> selected, then pruning will drop the field, resulting in an optimizer error.
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