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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2014/10/09 02:02:53 UTC

[jira] [Created] (SPARK-3862) MultiWayBroadcastInnerHashJoin

Reynold Xin created SPARK-3862:
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             Summary: MultiWayBroadcastInnerHashJoin
                 Key: SPARK-3862
                 URL: https://issues.apache.org/jira/browse/SPARK-3862
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
            Reporter: Reynold Xin


It is common to have a single fact table inner join many small dimension tables.  We can exploit this fact and create a MultiWayBroadcastInnerHashJoin (or maybe just MultiwayDimensionJoin) operator that optimizes for this pattern.



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