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https://issues.apache.org/jira/browse/HIVE-18491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331741#comment-16331741
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Gopal V commented on HIVE-18491:
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There's a different hot-spot I measured while working on HIVE-16821 (which
would remove this if condition properly).
> Set multichildren boolean for vectorized operators at initialization
> --------------------------------------------------------------------
>
> Key: HIVE-18491
> URL: https://issues.apache.org/jira/browse/HIVE-18491
> Project: Hive
> Issue Type: Improvement
> Components: Vectorization
> Affects Versions: 3.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Minor
> Attachments: HIVE-18491.patch
>
>
> Improvement on patch pushed in HIVE-17073. We could just create a boolean
> with value {{getNumChild() > 1}} at initialization of the operator, then use
> it in the {{forward}} method.
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