executor: reduce memory allocation in the initialization of hash agg executor

[xzhangxian1008]

What problem does this PR solve?

Issue Number: close #53898

Problem Summary:

What changed and how does it work?

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

[tiprow]

Hi @xzhangxian1008. Thanks for your PR.

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[xzhangxian1008]

/cc @hawkingrei @XuHuaiyu

[xzhangxian1008]

/retest

[tiprow]

@xzhangxian1008: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[xzhangxian1008]

/retest

[tiprow]

@xzhangxian1008: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.9053%. Comparing base (f73e3e3) to head (4dfe152).
Report is 358 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #54127        +/-   ##
================================================
+ Coverage   72.8881%   78.9053%   +6.0172%     
================================================
  Files          1576       1687       +111     
  Lines        440774     531368     +90594     
================================================
+ Hits         321272     419278     +98006     
+ Misses        99762      91379      -8383     
- Partials      19740      20711       +971     

Flag	Coverage Δ
integration	53.8929% <100.0000%> (?)
unit	76.1899% <100.0000%> (+4.2331%)	⬆️

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

Components	Coverage Δ
dumpling	54.7090% <ø> (+1.7522%)	⬆️
parser	∅ <ø> (∅)
br	55.5022% <ø> (+9.5083%)	⬆️

[xzhangxian1008]

/hold

[xzhangxian1008]

/retest

[tiprow]

@xzhangxian1008: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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-sigs/prow repository.

[xzhangxian1008]

/retest

[xzhangxian1008]

/retest

[xzhangxian1008]

/retest

[xzhangxian1008]

/cc @hawkingrei

[tiprow]

@xzhangxian1008: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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-sigs/prow repository.

[xzhangxian1008]

/cc @XuHuaiyu

[xzhangxian1008]

/cc @XuHuaiyu

[XuHuaiyu]

Any test result after this improvement can be shown?

[xzhangxian1008]

Any test result after this improvement can be shown?

test result has been updated in the pr description.

[xzhangxian1008]

/cc @XuHuaiyu

[xzhangxian1008]

/cc @XuHuaiyu

[xzhangxian1008]

/cc @XuHuaiyu

[xzhangxian1008]

/cc @XuHuaiyu

[xzhangxian1008]

/cc @XuHuaiyu

[windtalker]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, windtalker

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-08 01:49:09.457781434 +0000 UTC m=+235846.693015548: ☑️ agreed by hawkingrei.
• 2024-10-08 01:28:08.119947292 +0000 UTC m=+923043.540160303: ☑️ agreed by windtalker.

[tiprow]

@xzhangxian1008: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
tidb_parser_test	4dfe152	link	true	/test tidb_parser_test
fast_test_tiprow	4dfe152	link	true	/test fast_test_tiprow

Full PR test history. Your PR dashboard.

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-sigs/prow repository. I understand the commands that are listed here.