[
https://issues.apache.org/jira/browse/HIVE-9824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14508178#comment-14508178
]
Lefty Leverenz commented on HIVE-9824:
--------------------------------------
Doc note: This adds 5 configuration parameters (and changes indentation of the
descriptions for 2 others).
* hive.vectorized.execution.mapjoin.native.enabled
* hive.vectorized.execution.mapjoin.native.multikey.only.enabled
* hive.vectorized.execution.mapjoin.minmax.enabled
* hive.vectorized.execution.mapjoin.overflow.repeated.threshold
* hive.vectorized.execution.mapjoin.native.fast.hashtable.enabled
The new parameters need to be documented in the Vectorization section of
Configuration Properties:
* [Configuration Properties -- Vectorization |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-Vectorization]
Is any other documentation needed?
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
