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https://issues.apache.org/jira/browse/HIVE-17283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16124477#comment-16124477
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Lefty Leverenz commented on HIVE-17283:
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Doc note: This adds *hive.tez.dynamic.semijoin.reduction.for.mapjoin* to
HiveConf.java, so it needs to be documented in the wiki.
* [Configuration Properties -- Tez |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-Tez]
Added a TODOC3.0 label.
> Enable parallel edges of semijoin along with mapjoins
> -----------------------------------------------------
>
> Key: HIVE-17283
> URL: https://issues.apache.org/jira/browse/HIVE-17283
> Project: Hive
> Issue Type: Bug
> Reporter: Deepak Jaiswal
> Assignee: Deepak Jaiswal
> Labels: TODOC3.0
> Fix For: 3.0.0
>
> Attachments: HIVE-17283.1.patch, HIVE-17283.2.patch
>
>
> https://issues.apache.org/jira/browse/HIVE-16260 removes parallel edges of
> semijoin with mapjoin. However, in some cases it maybe beneficial to have it.
> We need a config which can enable it.
> The default should be false which maintains the existing behavior.
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