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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