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https://issues.apache.org/jira/browse/HIVE-9824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15205414#comment-15205414
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Shannon Ladymon commented on HIVE-9824:
---------------------------------------
Doc Done:
* [hive.vectorized.execution.mapjoin.native.enabled |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.vectorized.execution.mapjoin.native.enabled]
* [hive.vectorized.execution.mapjoin.native.multikey.only.enabled |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.vectorized.execution.mapjoin.native.multikey.only.enabled]
* [hive.vectorized.execution.mapjoin.minmax.enabled |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.vectorized.execution.mapjoin.minmax.enabled]
* [hive.vectorized.execution.mapjoin.overflow.repeated.threshold |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.vectorized.execution.mapjoin.overflow.repeated.threshold]
* [hive.vectorized.execution.mapjoin.native.fast.hashtable.enabled |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.vectorized.execution.mapjoin.native.fast.hashtable.enabled]
[~mmccline], when adding these to the wiki, I noticed that the description for
*hive.vectorized.execution.mapjoin.minmax.enabled* says it allows us to "use
max / max filtering" - should this be "min/max" filtering instead? If so, I'll
go ahead and update the wiki and create a JIRA to fix the description in a
patch as well.
> LLAP: Native Vectorization of Map Join
> --------------------------------------
>
> 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
> Labels: TODOC1.2
> Fix For: 1.2.0
>
> 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, HIVE-9824.09.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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