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Posted to issues@spark.apache.org by "Davies Liu (JIRA)" <ji...@apache.org> on 2016/03/17 18:22:33 UTC

[jira] [Created] (SPARK-13977) Bring back ShuffledHashJoin

Davies Liu created SPARK-13977:
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             Summary: Bring back ShuffledHashJoin
                 Key: SPARK-13977
                 URL: https://issues.apache.org/jira/browse/SPARK-13977
             Project: Spark
          Issue Type: Task
          Components: SQL
            Reporter: Davies Liu
            Assignee: Davies Liu


ShuffledHashJoin is still useful when:

1) any partition of the build side could fit in memory

2) the build side is much smaller than stream side, the building hash table on smaller side should be faster than sorting the bigger side.



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