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Posted to dev@hive.apache.org by "Xuefu Zhang (JIRA)" <ji...@apache.org> on 2014/10/09 06:57:34 UTC

[jira] [Created] (HIVE-8412) Make reduce side join work for all join queries [Spark Branch]

Xuefu Zhang created HIVE-8412:
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             Summary: 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


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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