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executor: prevent sending cop request for show columns (#36613) #36817

Merged
merged 3 commits into from
Aug 10, 2022
Merged

executor: prevent sending cop request for show columns (#36613) #36817

merged 3 commits into from
Aug 10, 2022

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@ti-srebot ti-srebot commented Aug 2, 2022 •
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cherry-pick #36613 to release-5.4
You can switch your code base to this Pull Request by using git-extras:

# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/36817

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/tidb.git pr/36817:release-5.4-e39ef4cae80f

What problem does this PR solve?

Issue Number: close #36426, #36496

What is changed and how it works?

This PR prevents running the executor when executing SHOW COLUMNS or reading INFORMATION_SCHEMA.COLUMNS.

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

@ti-srebot
cherry pick pingcap#36613 to release-5.4
d93288d 
Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
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ti-chi-bot commented Aug 2, 2022 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • xhebox
  • xiongjiwei

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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/run-all-tests

@ti-chi-bot ti-chi-bot added do-not-merge/cherry-pick-not-approved do-not-merge/release-note-label-needed Indicates that a PR should not merge because it's missing one of the release note labels. release-note-none Denotes a PR that doesn't merit a release note. and removed do-not-merge/release-note-label-needed Indicates that a PR should not merge because it's missing one of the release note labels. labels Aug 2, 2022
@ti-srebot ti-srebot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. type/5.4-cherry-pick labels Aug 2, 2022
@ti-srebot ti-srebot mentioned this pull request Aug 2, 2022
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@ti-srebot ti-srebot added this to the v5.4.1 milestone Aug 2, 2022
@ti-chi-bot ti-chi-bot removed the size/M Denotes a PR that changes 30-99 lines, ignoring generated files. label Aug 2, 2022
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@tangenta you're already a collaborator in bot's repo.

@ti-chi-bot ti-chi-bot added the size/L Denotes a PR that changes 100-499 lines, ignoring generated files. label Aug 2, 2022
@xhebox
*: fix CI
578b41d 
Signed-off-by: xhe <xw897002528@gmail.com>
@ti-chi-bot ti-chi-bot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. and removed size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Aug 9, 2022
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sre-bot commented Aug 9, 2022 •
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Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/3d4c55642cdf0938eb91ee5f1b1afcf596a2c85f

@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Aug 10, 2022
@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 Aug 10, 2022
@VelocityLight VelocityLight added cherry-pick-approved Cherry pick PR approved by release team. and removed do-not-merge/cherry-pick-not-approved labels Aug 10, 2022
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xhebox commented Aug 10, 2022

/merge

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

Commit hash: 578b41d

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Aug 10, 2022
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xhebox commented Aug 10, 2022

/run-build

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xhebox commented Aug 10, 2022

/run-unit-test

@ti-chi-bot ti-chi-bot merged commit 77f7f9d into pingcap:release-5.4 Aug 10, 2022
@xhebox xhebox deleted the release-5.4-e39ef4cae80f branch August 10, 2022 03:37
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@xhebox xhebox xhebox approved these changes

@xiongjiwei xiongjiwei xiongjiwei approved these changes

@qw4990 qw4990 Awaiting requested review from qw4990

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