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  1. Hive
  2. HIVE-5775 Introduce Cost Based Optimizer to Hive
  3. HIVE-6439

Introduce CBO step in Semantic Analyzer

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Invalid
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    Description

      This patch introduces CBO step in SemanticAnalyzer. For now the CostBasedOptimizer is an empty shell.
      The contract between SemAly and CBO is:

      • CBO step is controlled by the 'hive.enable.cbo.flag'.
      • When true Hive SemAly will hand CBO a Hive Operator tree (with operators annotated with stats). If it can CBO will return a better plan in Hive AST form.

      Attachments

        1. HIVE-6439.5.patch
          15 kB
          Harish Butani
        2. HIVE-6439.4.patch
          15 kB
          Harish Butani
        3. HIVE-6439.2.patch
          15 kB
          Harish Butani
        4. HIVE-6439.1.patch
          14 kB
          Harish Butani

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            rhbutani Harish Butani Assign to me
            rhbutani Harish Butani
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              Updated:
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