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https://issues.apache.org/jira/browse/SPARK-14863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-14863:
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Assignee: Apache Spark (was: Josh Rosen)
> 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: Apache Spark
>
> 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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