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https://issues.apache.org/jira/browse/HIVE-17874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vihang Karajgaonkar updated HIVE-17874:
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Status: Patch Available (was: Open)
> Parquet vectorization fails on tables with complex columns when there are no
> projected columns
> ----------------------------------------------------------------------------------------------
>
> Key: HIVE-17874
> URL: https://issues.apache.org/jira/browse/HIVE-17874
> Project: Hive
> Issue Type: Sub-task
> Reporter: Vihang Karajgaonkar
> Assignee: Vihang Karajgaonkar
> Attachments: HIVE-17874.01-branch-2.patch, HIVE-17874.01.patch
>
>
> When a parquet table contains an unsupported type like {{Map}}, {{LIST}} or
> {{UNION}} simple queries like {{select count(*) from table}} fails with
> {{unsupported type exception}} even though vectorized reader doesn't really
> need read the complex type into batches.
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