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https://issues.apache.org/jira/browse/HIVE-9824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14505696#comment-14505696
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Matt McCline commented on HIVE-9824:
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Actually, they are exactly 1000 bytes different...
> LLAP: Native Vectorization of Map Join so previously CPU bound queries shift
> their bottleneck to I/O and make it possible for the rest of LLAP to shine ;)
> ----------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-9824
> URL: https://issues.apache.org/jira/browse/HIVE-9824
> Project: Hive
> Issue Type: Sub-task
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-9824.01.patch, HIVE-9824.02.patch,
> HIVE-9824.04.patch, HIVE-9824.06.patch, HIVE-9824.07.patch, HIVE-9824.08.patch
>
>
> Today's VectorMapJoinOperator is a pass-through that converts each row from a
> vectorized row batch in a Java Object[] row and passes it to the
> MapJoinOperator superclass.
> This enhancement creates specialized vectorized map join operator classes
> that are optimized.
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