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https://issues.apache.org/jira/browse/HIVE-15468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15902211#comment-15902211
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Sergey Shelukhin commented on HIVE-15468:
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LLAP has support for complex types via the vector-to-row converter right now...
so the reading of vectors for complex types is supported (outside of LLAP too,
iirc) and then they get converted back to rows.
> Enhance the vectorized execution engine to support complex types
> ----------------------------------------------------------------
>
> Key: HIVE-15468
> URL: https://issues.apache.org/jira/browse/HIVE-15468
> Project: Hive
> Issue Type: Improvement
> Components: Vectorization
> Reporter: Chao Sun
> Assignee: Teddy Choi
>
> Currently Hive's vectorized execution engine only supports scalar types, as
> documented here:
> https://cwiki.apache.org/confluence/display/Hive/Vectorized+Query+Execution.
> To be complete, we should add support for complex types as well.
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