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  1. Drools
  2. DROOLS-5581

Add groupBy feature to executable model DSL

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    • Feature Request
    • Resolution: Done
    • Major
    • None
    • None
    • None
    • None
    • 2020 Week 34-36 (from Aug 17)
    • NEW
    • NEW

    Description

      Optaplanner's CS-D requires that the executable model should provide a construct to build an efficient groupBy implementation.

      More details are available here https://docs.google.com/document/d/1IxL2HNMNf_OYxOGGzkVjwXc7NW5ZEear-kz4OfHMXVM/edit#

      We already measured that an implementation based on a 3-rules solution as sketched here https://github.com/triceo/groupby/blob/master/src/main/resources/org/optaplanner/examples/cloudbalancing/solver/cloudBalancingScoreRules3.drl fulfills the expected performance requirements, so we need

      1. a convenient method in the executable model DSL to define a groupBy
      2. an implementation that internally translates the groupBy defined with 1. into the equivalent of that 3-rules based solution

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        Issue Links

          blocks

          Bug - A problem that impairs or prevents the functions of the product. PLANNER-2003 CS-D: Loss of incremental performance when using groupBy()

          • Critical - To be worked on immediately following BLOCKER issues.
          • Resolved
          is related to

          Enhancement - An enhancement to or refactoring of existing functionality that is not configurable by an end user (typically a change made by an internal team that affects users) DROOLS-5697 Make exec model's groupBy() composable

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          relates to

          Task - Represents a small unit of work that is not end-user facing. PLANNER-2131 Experimental integration of Mario's groupBy PoC

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Resolved

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              mfusco@redhat.com Mario Fusco
              mfusco@redhat.com Mario Fusco
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                Created:
                Updated:
                Resolved: