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https://issues.apache.org/jira/browse/ORC-644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17160221#comment-17160221
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Arvin Zheng commented on ORC-644:
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Hi [~omalley], pinged you and described the use case in slack. Yes, it's not
hard to implement this, but changing the behavior of
`orc.force.positional.evolution` will cause regressions (I made a patch which
failed few unit tests) and is not ideal, add a config knob sounds better.
BTW, I don't have context of supporting Iceberg's id-based schema evolution,
would you mind sharing a link/doc for this?
Appreciated for your time.
> nested struct evaluation does not respect to orc.force.positional.evolution
> ---------------------------------------------------------------------------
>
> Key: ORC-644
> URL: https://issues.apache.org/jira/browse/ORC-644
> Project: ORC
> Issue Type: Bug
> Components: Java
> Affects Versions: master
> Reporter: Arvin Zheng
> Priority: Major
>
> I noticed that even when orc.force.positional.evolution is set to true, the
> nested Struct evolution is still Hive field name based, which caused some of
> our queries to return incorrect values for fields inside a nested Struct
> since our Hive column name does not match to ORC column name.
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