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Posted to issues@spark.apache.org by "Josh Rosen (JIRA)" <ji...@apache.org> on 2016/04/23 01:14:12 UTC

[jira] [Created] (SPARK-14863) Cache TreeNode's hashCode

Josh Rosen created SPARK-14863:
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             Summary: Cache TreeNode's hashCode
                 Key: SPARK-14863
                 URL: https://issues.apache.org/jira/browse/SPARK-14863
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Josh Rosen
            Assignee: Josh Rosen


Caching TreeNode's hashCode can lead to orders-of-magnitude performance improvement in certain optimizer rules when operating on data with huge/complex schemas.



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