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  1. Spark
  2. SPARK-15752

Optimize metadata only query that has an aggregate whose children are deterministic project or filter operators

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 2.1.0
    • SQL
    • None

    Description

      when query only use metadata (example: partition key), it can return results based on metadata without scaning files. Hive did it in HIVE-1003.
      design document:
      https://docs.google.com/document/d/1Bmi4-PkTaBQ0HVaGjIqa3eA12toKX52QaiUyhb6WQiM/edit?usp=sharing

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            lianhuiwang Lianhui Wang
            lianhuiwang Lianhui Wang
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