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Posted to issues@spark.apache.org by "Yin Huai (JIRA)" <ji...@apache.org> on 2015/04/15 06:41:58 UTC

[jira] [Resolved] (SPARK-3839) Reimplement HashOuterJoin to construct hash table of only one relation

     [ https://issues.apache.org/jira/browse/SPARK-3839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yin Huai resolved SPARK-3839.
-----------------------------
    Resolution: Duplicate

I believe that SPARK-4483 has addressed the issue.

> Reimplement HashOuterJoin to construct hash table of only one relation
> ----------------------------------------------------------------------
>
>                 Key: SPARK-3839
>                 URL: https://issues.apache.org/jira/browse/SPARK-3839
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.1.0
>            Reporter: Liquan Pei
>            Assignee: Liquan Pei
>
> Currently, in HashOuterJoin, we build hash tables for both relations, however, in left/right outer join, we only need to build hash table for one relation. For example, for left hash join, we build a hash table for the right relation and stream the left relation. 



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