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https://issues.apache.org/jira/browse/HIVE-5503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13803488#comment-13803488
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Sergey Shelukhin commented on HIVE-5503:
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HIVE-5588 has been abandoned now, so we will do this by adding vectorized
interface to TopNHash
> TopN optimization in VectorReduceSink
> -------------------------------------
>
> Key: HIVE-5503
> URL: https://issues.apache.org/jira/browse/HIVE-5503
> Project: Hive
> Issue Type: Sub-task
> Reporter: Jitendra Nath Pandey
> Assignee: Sergey Shelukhin
>
> We need to add TopN optimization to VectorReduceSink as well, it would be
> great if ReduceSink and VectorReduceSink share this code.
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