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https://issues.apache.org/jira/browse/HIVE-8513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt McCline resolved HIVE-8513.
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Resolution: Won't Fix
> Vectorize multiple children operators
> --------------------------------------
>
> Key: HIVE-8513
> URL: https://issues.apache.org/jira/browse/HIVE-8513
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Reporter: Matt McCline
> Assignee: Matt McCline
>
> For HIVE-8498 we turned off vectorization if any operator is encountered with
> multiple children.
> Thus, this query will not be vectorized:
> from orc1 a
> insert overwrite table orc_rn1 select a.* where a.rn < 100
> insert overwrite table orc_rn2 select a.* where a.rn >= 100 and a.rn < 1000
> insert overwrite table orc_rn3 select a.* where a.rn >= 1000;
> But Prashanth [~prasanthj] also points that correlation operators Mux/Demux
> will also not be vectorized, too.
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