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planner: Set minimum cost to avoid parent multiplication cost discrepancies (#56387) #56412

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This is an automated cherry-pick of #56387

What problem does this PR solve?

Issue Number: ref #55126

Problem Summary:

What changed and how does it work?

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No need to test
    • I checked and no code files have been changed.

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. sig/planner SIG: Planner size/S Denotes a PR that changes 10-29 lines, ignoring generated files. type/cherry-pick-for-release-7.5 This PR is cherry-picked to release-7.5 from a source PR. labels Sep 29, 2024
@ti-chi-bot ti-chi-bot bot added do-not-merge/cherry-pick-not-approved cherry-pick-approved Cherry pick PR approved by release team. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed do-not-merge/cherry-pick-not-approved size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Sep 29, 2024
@ti-chi-bot ti-chi-bot bot added size/S Denotes a PR that changes 10-29 lines, ignoring generated files. and removed size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Sep 30, 2024
@ti-chi-bot ti-chi-bot bot added approved needs-1-more-lgtm Indicates a PR needs 1 more LGTM. labels Sep 30, 2024
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ti-chi-bot bot commented Sep 30, 2024

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, Rustin170506

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:
  • OWNERS [Rustin170506,hawkingrei]

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@ti-chi-bot ti-chi-bot bot added lgtm and removed needs-1-more-lgtm Indicates a PR needs 1 more LGTM. labels Sep 30, 2024
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ti-chi-bot bot commented Sep 30, 2024

[LGTM Timeline notifier]

Timeline:

  • 2024-09-30 06:49:42.051574273 +0000 UTC m=+251137.471787282: ☑️ agreed by hawkingrei.
  • 2024-09-30 06:55:54.169380715 +0000 UTC m=+251509.589593727: ☑️ agreed by Rustin170506.

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codecov bot commented Sep 30, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-7.5@3edb7a3). Learn more about missing BASE report.

Additional details and impacted files
@@               Coverage Diff                @@
##             release-7.5     #56412   +/-   ##
================================================
  Coverage               ?   72.0205%           
================================================
  Files                  ?       1415           
  Lines                  ?     412513           
  Branches               ?          0           
================================================
  Hits                   ?     297094           
  Misses                 ?      95523           
  Partials               ?      19896           
Flag Coverage Δ
unit 72.0205% <100.0000%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components Coverage Δ
dumpling 52.9400% <0.0000%> (?)
parser ∅ <0.0000%> (?)
br 53.5488% <0.0000%> (?)

@ti-chi-bot ti-chi-bot bot merged commit cceec97 into pingcap:release-7.5 Sep 30, 2024
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approved cherry-pick-approved Cherry pick PR approved by release team. lgtm release-note-none Denotes a PR that doesn't merit a release note. sig/planner SIG: Planner size/S Denotes a PR that changes 10-29 lines, ignoring generated files. type/cherry-pick-for-release-7.5 This PR is cherry-picked to release-7.5 from a source PR.
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5 participants