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Posted to issues@spark.apache.org by "Michael Armbrust (JIRA)" <ji...@apache.org> on 2014/08/01 04:36:39 UTC

[jira] [Resolved] (SPARK-2436) Apply size-based optimization to planning BroadcastNestedLoopJoin

     [ https://issues.apache.org/jira/browse/SPARK-2436?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Armbrust resolved SPARK-2436.
-------------------------------------

       Resolution: Fixed
    Fix Version/s: 1.1.0

> Apply size-based optimization to planning BroadcastNestedLoopJoin
> -----------------------------------------------------------------
>
>                 Key: SPARK-2436
>                 URL: https://issues.apache.org/jira/browse/SPARK-2436
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>            Reporter: Zongheng Yang
>            Assignee: Zongheng Yang
>             Fix For: 1.1.0
>
>
> We should estimate the sizes of both the left side & right side, and make the smaller one the broadcast relation.
> As part of this task, BroadcastNestedLoopJoin needs to be slightly refactored to take a BuildSide into account.



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