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https://issues.apache.org/jira/browse/HIVE-20513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16608785#comment-16608785
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Zoltan Haindrich commented on HIVE-20513:
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attached patch#7 to not change smb q.out-s (my earlier recommended changes were
off because my maven repo was probably mixed up with another build)
> Vectorization: Improve Fast Vector MapJoin Bytes Hash Tables
> ------------------------------------------------------------
>
> Key: HIVE-20513
> URL: https://issues.apache.org/jira/browse/HIVE-20513
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-20513.01.patch, HIVE-20513.02.patch,
> HIVE-20513.03.patch, HIVE-20513.04.patch, HIVE-20513.05.patch,
> HIVE-20513.06.patch, HIVE-20513.07.patch
>
>
> Based on HIVE-20491 / HIVE-20503 discussions, improve Fast Vector MapJoin
> Bytes Hash Tables by only storing a one word slot entry.
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