store: remove stores that have no region before balance

[xzhangxian1008]

What problem does this PR solve?

Issue Number: close #52313

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.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[codecov]

Codecov Report

Attention: Patch coverage is 72.13115% with 17 lines in your changes are missing coverage. Please review.

Project coverage is 73.6978%. Comparing base (cc127c1) to head (1ce768b).
Report is 55 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #52314        +/-   ##
================================================
- Coverage   74.4290%   73.6978%   -0.7312%     
================================================
  Files          1497       1524        +27     
  Lines        356920     441929     +85009     
================================================
+ Hits         265652     325692     +60040     
- Misses        71938      96195     +24257     
- Partials      19330      20042       +712     

Flag	Coverage Δ
integration	49.1928% <0.0000%> (?)
unit	71.3247% <72.1311%> (-1.8755%)	⬇️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (-2.3014%)	⬇️
parser	∅ <ø> (∅)
br	42.0406% <ø> (-0.9182%)	⬇️

[xzhangxian1008]

/cc @windtalker

[xzhangxian1008]

/hold

[windtalker]

LGTM

[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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[yibin87]

LGTM

[ti-chi-bot]

@yibin87: adding LGTM is restricted to approvers and reviewers in OWNERS files.

In response to this:

LGTM

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[yibin87]

/lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: windtalker, yibin87

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-22 01:59:27.626393508 +0000 UTC m=+821786.737439957: ☑️ agreed by windtalker.
• 2024-05-24 03:52:10.282811992 +0000 UTC m=+2402884.039947566: ☑️ agreed by yibin87.

[tiprow]

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

Test name	Commit	Details	Required	Rerun command
fast_test_tiprow	1ce768b	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.

[xzhangxian1008]

/unhold

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #53573.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #53574.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #53575.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #53576.