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statistics: fix data race in HandleUpdateStats #33260

Merged
merged 3 commits into from
Mar 25, 2022
Merged

statistics: fix data race in HandleUpdateStats #33260

merged 3 commits into from
Mar 25, 2022

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xuyifangreeneyes
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@xuyifangreeneyes xuyifangreeneyes commented Mar 20, 2022 •
edited by hawkingrei
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What problem does this PR solve?

Issue Number: close #33108 #32867 #33001

Problem Summary:
HandleUpdateStats calls h.mu.ctx.(sqlexec.SQLExecutor).ExecuteInternal without h.mu.Lock(), which causes data race.

What is changed and how it works?

Use h.execRestrictedSQL to execute sql.

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

None

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ti-chi-bot commented Mar 20, 2022 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • time-and-fate
  • winoros

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 release-note-none Denotes a PR that doesn't merit a release note. do-not-merge/needs-triage-completed size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Mar 20, 2022
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sre-bot commented Mar 20, 2022 •
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Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/d4ca16cb1c9cc4d40a1e01426b6d62ef2fe01769

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/cc @winoros @time-and-fate

@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Mar 23, 2022
@ti-chi-bot ti-chi-bot added status/LGT2 Indicates that a PR has LGTM 2. needs-cherry-pick-6.0 and removed status/LGT1 Indicates that a PR has LGTM 1. do-not-merge/needs-triage-completed labels Mar 24, 2022
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/merge

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

Commit hash: 089f4d9

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Mar 25, 2022
@ti-chi-bot ti-chi-bot merged commit 9b9051f into pingcap:master Mar 25, 2022
ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Mar 25, 2022
@xuyifangreeneyes @ti-srebot
cherry pick pingcap#33260 to release-6.0
66f5ee6 
Signed-off-by: ti-srebot <[email protected]>
@ti-srebot ti-srebot mentioned this pull request Mar 25, 2022
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cherry pick to release-6.0 in PR #33444

@xuyifangreeneyes xuyifangreeneyes deleted the fix-33108 branch March 25, 2022 14:27
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@time-and-fate time-and-fate time-and-fate approved these changes

@winoros winoros winoros approved these changes

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Successfully merging this pull request may close these issues.

(*Handle).HandleUpdateStats can trigger data race
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@xuyifangreeneyes @ti-chi-bot @sre-bot @hawkingrei @ti-srebot @winoros @time-and-fate