br/operator: fix stuck when terminating

[YuJuncen]

What problem does this PR solve?

Issue Number: close #52243

Problem Summary:
When exiting due to error, we are waiting from the client to finish before receiving from the output channel. In this case, the output channel may be full and blocks the exit procedure.

What changed and how does it work?

We will poll from both the request exit result and the exit channel.

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.

Fixed an issue where init pod may get stuck when encountering connective errors.

[tiprow]

Hi @YuJuncen. Thanks for your PR.

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[YuJuncen]

/test check-dev

[YuJuncen]

/test check-dev

[tiprow]

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

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/test check-dev

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[codecov]

Codecov Report

Merging #52264 (4a54e01) into master (150233d) will increase coverage by 1.3902%.
The diff coverage is 87.0967%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #52264        +/-   ##
================================================
+ Coverage   70.8036%   72.1938%   +1.3901%     
================================================
  Files          1491       1491                
  Lines        440446     440468        +22     
================================================
+ Hits         311852     317991      +6139     
+ Misses       109197     102240      -6957     
- Partials      19397      20237       +840     

Flag	Coverage Δ
integration	23.1657% <32.2580%> (?)
unit	70.4780% <87.0967%> (-0.1461%)	⬇️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	51.3092% <87.0967%> (+5.4796%)	⬆️

[BornChanger]

/retest

[tiprow]

@BornChanger: 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/test-infra repository.

[BornChanger]

/run-check-issue-triage-complete

[YuJuncen]

/run-check-issue-triage-complete

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BornChanger, Leavrth

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• br/OWNERS [BornChanger,Leavrth]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-01 02:14:22.183592613 +0000 UTC m=+237323.711133157: ☑️ agreed by Leavrth.
• 2024-04-03 10:11:36.557416657 +0000 UTC m=+438758.084957203: ☑️ agreed by BornChanger.

[BornChanger]

/label needs-cherry-pick-release-6.5

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #52361.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #52558.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #52559.