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https://issues.apache.org/jira/browse/IMPALA-6503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16586190#comment-16586190
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Tim Armstrong commented on IMPALA-6503:
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[~stiga-huang] lmk if I can provide any pointers. The Parquet complex types
implementation is pretty complex because of the "shredded" representation of
nested types in Parquet and the need for the scanner to generate both nested
and unnested outputs.
> Support reading complex types from ORC format files
> ---------------------------------------------------
>
> Key: IMPALA-6503
> URL: https://issues.apache.org/jira/browse/IMPALA-6503
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Frontend
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Major
>
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