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https://issues.apache.org/jira/browse/HIVE-8412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xuefu Zhang updated HIVE-8412:
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Status: Patch Available (was: Open)
> Make reduce side join work for all join queries [Spark Branch]
> --------------------------------------------------------------
>
> Key: HIVE-8412
> URL: https://issues.apache.org/jira/browse/HIVE-8412
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Reporter: Xuefu Zhang
> Attachments: HIVE-8412.1-spark.patch
>
>
> Regardless all these join related optimizations such as map join, bucket
> join, skewed join, etc, reduce side join is the fallback. That means, if a
> join query wasn't taken care of by any of the optimization, it should work
> with reduce side join (might in a less optimal fashion).
> It's found that this isn't case at the moment. For instance,
> auto_sortmerge_join_1.q failed to execute on Spark.
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