*: replace exp/maps with std/maps

[hawkingrei]

What problem does this PR solve?

Issue Number: ref #45933

Problem Summary:

What is changed and how it works?

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

[codecov]

Codecov Report

Merging #45928 (ee99db5) into master (a0cbff2) will increase coverage by 0.0082%.
Report is 2 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #45928        +/-   ##
================================================
+ Coverage   73.3499%   73.3582%   +0.0082%     
================================================
  Files          1277       1280         +3     
  Lines        393392     394069       +677     
================================================
+ Hits         288553     289082       +529     
- Misses        86434      86547       +113     
- Partials      18405      18440        +35     

Flag	Coverage Δ
integration	78.1388% <ø> (?)

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

Components	Coverage Δ
dumpling	54.0444% <ø> (ø)
parser	85.0602% <ø> (ø)
br	52.0312% <ø> (ø)

[hawkingrei]

/retest

[wuhuizuo]

/test mysql-test

Ref: PingCAP-QE/ci#2344

[tiprow]

@wuhuizuo: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

• /test tiprow_fast_test

Use /test all to run all jobs.

In response to this:

/test mysql-test

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[hawkingrei]

/retest

[ti-chi-bot]

@Defined2014: Your lgtm message is repeated, so it is ignored.

In response to this:

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 kubernetes/test-infra repository.

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-08-09 07:17:20.063736959 +0000 UTC m=+97004.612752941: ☑️ agreed by Defined2014.
• 2023-08-09 07:50:44.329266012 +0000 UTC m=+99008.878281999: ☑️ agreed by lance6716.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, lance6716, xhebox

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• OWNERS [Defined2014,lance6716,xhebox]

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