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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2016/01/05 23:36:40 UTC

[jira] [Created] (SPARK-12660) Rewrite except using anti-join

Reynold Xin created SPARK-12660:
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             Summary: Rewrite except using anti-join
                 Key: SPARK-12660
                 URL: https://issues.apache.org/jira/browse/SPARK-12660
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Reynold Xin


Similar to SPARK-12656, we can rewrite except in the logical level using anti-join.  This way, we can take advantage of all the benefits of join implementations (e.g. managed memory, code generation, broadcast joins).




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