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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/01/02 18:17:39 UTC

[jira] [Assigned] (SPARK-12605) Pushing Join Predicates Through Union All

     [ https://issues.apache.org/jira/browse/SPARK-12605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-12605:
------------------------------------

    Assignee:     (was: Apache Spark)

> Pushing Join Predicates Through Union All
> -----------------------------------------
>
>                 Key: SPARK-12605
>                 URL: https://issues.apache.org/jira/browse/SPARK-12605
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.6.0
>            Reporter: Xiao Li
>
> When selectivity of Join predicates is high, we can push join through union all.



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