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https://issues.apache.org/jira/browse/IMPALA-6503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Quanlong Huang updated IMPALA-6503:
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Description: ORC already supports Hive complex(nested) types: STRUCT,
ARRAY, MAP, UNION. UNION type is not widely used. Here we track the support of
reading STRUCT, ARRAY, MAP types from ORC files. (was: ORC already supports
Hive complex(nested) types: STRUCT, ARRAY, MAP, UNION)
> 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
>
> ORC already supports Hive complex(nested) types: STRUCT, ARRAY, MAP, UNION.
> UNION type is not widely used. Here we track the support of reading STRUCT,
> ARRAY, MAP types from ORC files.
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