store: remove stores that have no region before balance

[xzhangxian1008]

What problem does this PR solve?

Issue Number: ref #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

[xzhangxian1008]

/cc @windtalker

[tiprow]

Hi @xzhangxian1008. Thanks for your PR.

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[windtalker]

Looks like this log is duplicated since filterAliveStores will also record this log

[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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-7.1@b511a45). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.1     #52790   +/-   ##
================================================
  Coverage               ?   73.4327%           
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  Files                  ?       1211           
  Lines                  ?     380213           
  Branches               ?          0           
================================================
  Hits                   ?     279201           
  Misses                 ?      83169           
  Partials               ?      17843           

[windtalker]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: windtalker, zanmato1984

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-05-27 08:32:35.672587215 +0000 UTC m=+2678909.429722780: ☑️ agreed by zanmato1984.
• 2024-05-28 02:15:27.583702534 +0000 UTC m=+2742681.340838125: ☑️ agreed by windtalker.