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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-13249) Filter null keys for inner join
Date Wed, 17 Feb 2016 06:33:18 GMT

     [ https://issues.apache.org/jira/browse/SPARK-13249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-13249:
------------------------------------

    Assignee: Apache Spark

> Filter null keys for inner join
> -------------------------------
>
>                 Key: SPARK-13249
>                 URL: https://issues.apache.org/jira/browse/SPARK-13249
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Davies Liu
>            Assignee: Apache Spark
>
> For inner join, the join key with null in it will not match each other, so we could insert
a Filter before inner join (could be pushed down), then we don't need to check nullability
of keys while joining.



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