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https://issues.apache.org/jira/browse/HIVE-16110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15898812#comment-15898812
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Matt McCline commented on HIVE-16110:
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Look at why vector_coalesce_3.q has one vertex not vectorizing now.
Fix 3 golden files.
> Vectorization: Support 2 Value CASE WHEN instead of fall back to
> VectorUDFAdaptor
> ---------------------------------------------------------------------------------
>
> Key: HIVE-16110
> URL: https://issues.apache.org/jira/browse/HIVE-16110
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-16110.01.patch, HIVE-16110.02.patch
>
>
> Vectorize more queries by converting a GenericUDFWhen that has 2 values that
> are either a column or a constant into a GenericUDFIf, which has vectorized
> classes. This eliminates one case so to speak where we use the
> VectorUDFAdaptor.
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