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  1. Calcite
  2. CALCITE-4514

[CALCITE-4514] Fine tune the merge order of two RelSets

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Details

    • Improvement
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • None
    • 1.27.0
    • None

    Description

      When merging two relsets, we have two preferences:
      1. Merge parent relset into child relset
      2. Merge newer relset into older relset
      Currently, when the two relsets are parent set of each other, we randomly pick a merge order without checking the second condition above. For performance reasons, we should, to avoid unnecessary churn.

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            Unassigned Unassigned
            botong Botong Huang
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