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*: replace maps.Copy which is for map clone with std maps.Clone #55530

Merged
merged 1 commit into from
Aug 20, 2024
Merged

*: replace maps.Copy which is for map clone with std maps.Clone #55530

merged 1 commit into from
Aug 20, 2024

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D3Hunter
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@D3Hunter D3Hunter commented Aug 20, 2024 •
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What problem does this PR solve?

Issue Number: close #55527

Problem Summary:

What changed and how does it work?

as title, some maps.Copy which are used to override old item are kept

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 bot added release-note-none Denotes a PR that doesn't merit a release note. sig/planner SIG: Planner size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Aug 20, 2024
D3Hunter
D3Hunter commented Aug 20, 2024
View reviewed changes
pkg/sessionctx/variable/session.go
Comment on lines -467 to -468
CurrentStmtPessimisticLockCache := make(map[string][]byte, len(tc.CurrentStmtPessimisticLockCache))
maps.Copy(CurrentStmtPessimisticLockCache, tc.CurrentStmtPessimisticLockCache)
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this is useless code, see #43530 (comment)

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tiprow bot commented Aug 20, 2024

Hi @D3Hunter. Thanks for your PR.

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@ti-chi-bot ti-chi-bot bot added the needs-1-more-lgtm Indicates a PR needs 1 more LGTM. label Aug 20, 2024
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codecov bot commented Aug 20, 2024 •
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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.4972%. Comparing base (c1c74b1) to head (71d9b95).
Report is 7 commits behind head on master.

Additional details and impacted files 
@@               Coverage Diff                @@
##             master     #55530        +/-   ##
================================================
+ Coverage   72.8739%   75.4972%   +2.6232%     
================================================
  Files          1576       1598        +22     
  Lines        440775     449369      +8594     
================================================
+ Hits         321210     339261     +18051     
+ Misses        99821      88846     -10975     
- Partials      19744      21262      +1518
Flag Coverage Δ
integration 52.0644% <80.0000%> (?)
unit 71.9045% <100.0000%> (-0.9685%) ⬇️

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

Components Coverage Δ
dumpling 52.9567% <ø> (ø)
parser ∅ <ø> (∅)
br 63.0619% <ø> (+17.1159%) ⬆️

@ti-chi-bot ti-chi-bot bot added lgtm and removed needs-1-more-lgtm Indicates a PR needs 1 more LGTM. labels Aug 20, 2024
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ti-chi-bot bot commented Aug 20, 2024

[LGTM Timeline notifier]

Timeline:

  • 2024-08-20 08:52:11.970173026 +0000 UTC m=+255527.104623148: ☑️ agreed by XuHuaiyu.
  • 2024-08-20 09:32:41.977622871 +0000 UTC m=+257957.112072993: ☑️ agreed by lance6716.

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/retest

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easonn7 commented Aug 20, 2024

/approve

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ti-chi-bot bot commented Aug 20, 2024

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: easonn7, hawkingrei, lance6716, XuHuaiyu

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@ti-chi-bot ti-chi-bot bot added the approved label Aug 20, 2024
@ti-chi-bot ti-chi-bot bot merged commit adc7597 into pingcap:master Aug 20, 2024
25 checks passed
@D3Hunter D3Hunter deleted the maps-clone branch August 20, 2024 11:20
breezewish added a commit that referenced this pull request Aug 21, 2024
@breezewish
Merge remote-tracking branch 'origin/master' into wenxuan/vector-merg…
80d9f5f 
…e-upstream

* origin/master:
  parser:  call `SetText` correctly for `CreateViewStmt` (#55520)
  lighting: expose limited fields for `kv.Session` (#55517)
  show: prefilter table name with like pattern and show full tables (#55396)
  Planner: Do not allow cardinality to go below 1 (#55242)
  *: replace maps.Copy which is for map clone with std maps.Clone (#55530)
  infoschema: add WithRefillOption for TableByName and TableByID (#55511)
  domain: change groupSize in splitForConcurrentFetch (#55518)
  ddl: fix resuming to wrong checkpoint when failed during adding index (#55506)
breezewish added a commit to breezewish/tidb that referenced this pull request Aug 21, 2024
@breezewish
Merge remote-tracking branch 'origin/master' into wenxuan/vector-merg…
e0fd46a 
…e-upstream

* origin/master:
  parser:  call `SetText` correctly for `CreateViewStmt` (pingcap#55520)
  lighting: expose limited fields for `kv.Session` (pingcap#55517)
  show: prefilter table name with like pattern and show full tables (pingcap#55396)
  Planner: Do not allow cardinality to go below 1 (pingcap#55242)
  *: replace maps.Copy which is for map clone with std maps.Clone (pingcap#55530)
  infoschema: add WithRefillOption for TableByName and TableByID (pingcap#55511)
  domain: change groupSize in splitForConcurrentFetch (pingcap#55518)
  ddl: fix resuming to wrong checkpoint when failed during adding index (pingcap#55506)

Signed-off-by: Wish <[email protected]>
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@lance6716 lance6716 lance6716 approved these changes

@hawkingrei hawkingrei hawkingrei approved these changes

@XuHuaiyu XuHuaiyu XuHuaiyu approved these changes

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replace maps.Copy in exp used for clone with maps.Clone in std
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@D3Hunter @hawkingrei @easonn7 @lance6716 @XuHuaiyu