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planner: update the plan cache strategy when expressions with parameters affect null-check (#40218)#42637

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ti-chi-bot merged 6 commits intopingcap:release-5.4from
qw4990:cherry-pick-40218-to-release-5.4
Mar 28, 2023
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planner: update the plan cache strategy when expressions with parameters affect null-check (#40218)#42637
ti-chi-bot merged 6 commits intopingcap:release-5.4from
qw4990:cherry-pick-40218-to-release-5.4

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@qw4990 qw4990 commented Mar 28, 2023 •
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This is an automated cherry-pick of #40218

What problem does this PR solve?

Issue Number: close #38205

Problem Summary: planner: update the plan cache strategy when expressions with parameters affect null-check

What is changed and how it works?

When expressions with parameters affect null-check, process null-check and skip plan-cache instead of skipping the null-check and caching a sub-optimal plan.

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.

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ti-chi-bot commented Mar 28, 2023 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • chrysan
  • xuyifangreeneyes

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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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. size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Mar 28, 2023
@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Mar 28, 2023
@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 Mar 28, 2023
elsa0520
elsa0520 approved these changes Mar 28, 2023
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LGTM

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ti-chi-bot commented Mar 28, 2023

@elsa0520: 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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LGTM

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fixdb
fixdb approved these changes Mar 28, 2023
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+1

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AilinKid commented Mar 28, 2023

/retest

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fzzf678 commented Mar 28, 2023

/retest

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fzzf678 commented Mar 28, 2023

/run unit-test

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qw4990 commented Mar 28, 2023

/merge

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ti-chi-bot commented Mar 28, 2023

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

DetailsCommit hash: 34017bd

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Mar 28, 2023
@ti-chi-bot ti-chi-bot removed the status/can-merge Indicates a PR has been approved by a committer. label Mar 28, 2023
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qw4990 commented Mar 28, 2023

/merge

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ti-chi-bot commented Mar 28, 2023

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

DetailsCommit hash: 547dee9

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Mar 28, 2023
@VelocityLight VelocityLight added cherry-pick-approved Cherry pick PR approved by release team. and removed do-not-merge/cherry-pick-not-approved labels Mar 28, 2023
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qw4990 commented Mar 28, 2023

/merge

@ti-chi-bot ti-chi-bot merged commit c585770 into pingcap:release-5.4 Mar 28, 2023
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@fixdb fixdb fixdb approved these changes

@elsa0520 elsa0520 elsa0520 approved these changes

+2 more reviewers

@chrysan chrysan chrysan approved these changes

@xuyifangreeneyes xuyifangreeneyes xuyifangreeneyes 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/M Denotes a PR that changes 30-99 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.

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@qw4990 @ti-chi-bot @AilinKid @fzzf678 @fixdb @chrysan @xuyifangreeneyes @elsa0520 @VelocityLight