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  1. Spark
  2. SPARK-16026 Cost-based Optimizer Framework
  3. SPARK-17076

Cardinality estimation of join operator

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 2.0.0
    • 2.2.0
    • Optimizer, SQL
    • None

    Description

      support cardinality estimates for equi-join, Cartesian product join, and outer join, etc.

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          Dependent

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-13076 Implement FK/PK "rely novalidate" constraints for better CBO

          • Major - Major loss of function.
          • Resolved
          links to

          Pull request #16228 [Github] Pull Request #16228 (wzhfy)

          Activity

            People

              ZenWzh Zhenhua Wang
              ron8hu Ron Hu
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              Dates

                Created:
                Updated:
                Resolved: