br: got rpcClient is idle error during log meta restore| tidb-test=release-8.5-20250114-v8.5.0

[RidRisR]

What problem does this PR solve?

Issue Number: close #xxx

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]

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[codecov]

Codecov Report

❌ Patch coverage is 96.42857% with 1 line in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (release-8.5-20250114-v8.5.0@3741f27). Learn more about missing BASE report.

Additional details and impacted files

@@                       Coverage Diff                        @@
##             release-8.5-20250114-v8.5.0     #63786   +/-   ##
================================================================
  Coverage                               ?   57.8271%           
================================================================
  Files                                  ?       1789           
  Lines                                  ?     634932           
  Branches                               ?          0           
================================================================
  Hits                                   ?     367163           
  Misses                                 ?     242401           
  Partials                               ?      25368           

Flag	Coverage Δ
integration	38.5204% <46.4285%> (?)
unit	72.0821% <96.4285%> (?)

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

Components	Coverage Δ
dumpling	52.8711% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	63.6904% <0.0000%> (?)

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[lance6716]

/retest

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[lance6716]

do we need to print the error to know the root cause? maybe next time it's not the "idle" error and we need to locate and fix it

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-09-28 07:36:23.052342648 +0000 UTC m=+774193.122836330: ☑️ agreed by Leavrth.
• 2025-09-29 06:28:20.249629566 +0000 UTC m=+66080.506360976: ☑️ agreed by YuJuncen.

[RidRisR]

/retest

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[RidRisR]

/retest

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[RidRisR]

/retest

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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