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Posted to issues@hive.apache.org by "Shannon Ladymon (JIRA)" <ji...@apache.org> on 2016/03/22 01:14:25 UTC
[jira] [Commented] (HIVE-9824) LLAP: Native Vectorization of Map
Join
[ https://issues.apache.org/jira/browse/HIVE-9824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15205414#comment-15205414 ]
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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