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statistics: fix estimation error when ranges are too many and modify count is large (#40472) #40513

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merged 5 commits into from
Jan 12, 2023
Merged

statistics: fix estimation error when ranges are too many and modify count is large (#40472) #40513

merged 5 commits into from
Jan 12, 2023

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This is an automated cherry-pick of #40472

What problem does this PR solve?

Issue Number: close #39593

Problem Summary:

What is changed and how it works?

Fix wrong calculation logic in (*Index).GetRowCount

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No code

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

@time-and-fate @ti-chi-bot
This is an automated cherry-pick of pingcap#40472
897b67f 
Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
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ti-chi-bot commented Jan 11, 2023 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • Reminiscent
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@ti-chi-bot ti-chi-bot added do-not-merge/cherry-pick-not-approved release-note-none Denotes a PR that doesn't merit a release note. labels Jan 11, 2023
@ti-chi-bot ti-chi-bot mentioned this pull request Jan 11, 2023
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@ti-chi-bot ti-chi-bot added size/L Denotes a PR that changes 100-499 lines, ignoring generated files. type/cherry-pick-for-release-6.1 This PR is cherry-picked to release-6.1 from a source PR. labels Jan 11, 2023
@VelocityLight VelocityLight added cherry-pick-approved Cherry pick PR approved by release team. and removed do-not-merge/cherry-pick-not-approved labels Jan 11, 2023
@ti-chi-bot ti-chi-bot added size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. and removed size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Jan 11, 2023
@ti-chi-bot ti-chi-bot added size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. labels Jan 11, 2023
@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Jan 12, 2023
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@winoros: Thanks for your review. The bot only counts approvals from reviewers and higher roles in list, but you're still welcome to leave your comments.

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winoros commented Jan 12, 2023

/merge

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@winoros: /merge is only allowed for the committers, you can assign this pull request to the committer in list by filling /assign @committer in the comment to help merge this pull request.

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/merge

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@time-and-fate: Thanks for your review. The bot only counts approvals from reviewers and higher roles in list, but you're still welcome to leave your comments.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

@ti-chi-bot ti-chi-bot added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Jan 12, 2023
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/merge

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This pull request has been accepted and is ready to merge.

Commit hash: 277e7d3

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Jan 12, 2023
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@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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/retest

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/test check-dev

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/retest

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/retest

@ti-chi-bot ti-chi-bot merged commit 6f0fb75 into pingcap:release-6.1 Jan 12, 2023
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@Reminiscent Reminiscent Reminiscent approved these changes

@time-and-fate time-and-fate time-and-fate approved these changes

@winoros winoros winoros approved these changes

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cherry-pick-approved Cherry pick PR approved by release team. release-note-none Denotes a PR that doesn't merit a release note. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. status/can-merge Indicates a PR has been approved by a committer. status/LGT2 Indicates that a PR has LGTM 2. type/cherry-pick-for-release-6.1 This PR is cherry-picked to release-6.1 from a source PR.
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