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  1. Spark
  2. SPARK-16026

Cost-based Optimizer Framework

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    Details

    • Type: New Feature
    • Status: Resolved
    • Priority: Major
    • Resolution: Done
    • Affects Version/s: None
    • Fix Version/s: 2.3.0
    • Component/s: SQL
    • Labels:
    • Target Version/s:

      Description

      This is an umbrella ticket to implement a cost-based optimizer framework beyond broadcast join selection. This framework can be used to implement some useful optimizations such as join reordering.

      The design should discuss how to break the work down into multiple, smaller logical units. For example, changes to statistics class, system catalog, cost estimation/propagation in expressions, cost estimation/propagation in operators can be done in decoupled pull requests.

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              • Assignee:
                ZenWzh Zhenhua Wang
                Reporter:
                rxin Reynold Xin
              • Votes:
                12 Vote for this issue
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                105 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: