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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2014/12/11 21:42:13 UTC

[jira] [Closed] (SPARK-1880) Eliminate unnecessary job executions.

     [ https://issues.apache.org/jira/browse/SPARK-1880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin closed SPARK-1880.
------------------------------
    Resolution: Won't Fix

> Eliminate unnecessary job executions.
> -------------------------------------
>
>                 Key: SPARK-1880
>                 URL: https://issues.apache.org/jira/browse/SPARK-1880
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Takuya Ueshin
>
> There are unnecessary job executions in {{BroadcastNestedLoopJoin}}.
> When {{Innner}} or {{LeftOuter}} join, preparation of {{rightOuterMatches}} for {{RightOuter}} or {{FullOuter}} join is not neccessary.
> And when {{RightOuter}} or {{FullOuter}}, it should use not {{count}} and then {{reduce}} but {{fold}}.



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