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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/03/17 18:41:33 UTC

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

     [ https://issues.apache.org/jira/browse/SPARK-13977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-13977:
------------------------------------

    Assignee: Davies Liu  (was: Apache Spark)

> 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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