[DNM]consumer(ticdc): debug consumer

[3AceShowHand]

What problem does this PR solve?

Issue Number: close #xxx

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

Please refer to [Release Notes Language Style Guide](https://pingcap.github.io/tidb-dev-guide/contribute-to-tidb/release-notes-style-guide.html) to write a quality release note.

If you don't think this PR needs a release note then fill it with `None`.

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 53.8969%. Comparing base (e75248d) to head (7872fae). :warning: Report is 261 commits behind head on master.

:x: Your project check has failed because the head coverage (53.8969%) is below the target coverage (60.0000%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

Components	Coverage Δ
cdc	∅ <ø> (∅)
dm	51.1880% <ø> (-0.0277%)	:arrow_down:
engine	63.3879% <ø> (-0.0071%)	:arrow_down:

Flag	Coverage Δ
unit	53.8969% <ø> (-3.6436%)	:arrow_down:

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

@@               Coverage Diff                @@
##             master     #11138        +/-   ##
================================================
- Coverage   57.5404%   53.8969%   -3.6436%     
================================================
  Files           854        403       -451     
  Lines        126047      63781     -62266     
================================================
- Hits          72528      34376     -38152     
+ Misses        48125      26705     -21420     
+ Partials       5394       2700      -2694     

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[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[ti-chi-bot[bot]]

[FORMAT CHECKER NOTIFICATION]

Notice: To remove the do-not-merge/needs-linked-issue label, please provide the linked issue number on one line in the PR body, for example: Issue Number: close #123 or Issue Number: ref #456.

_{:open_book: For more info, you can check the "Contribute Code" section in the development guide.}

[ti-chi-bot[bot]]

PR needs rebase.

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[ti-chi-bot[bot]]

@3AceShowHand: 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
jenkins-ticdc/verify	7872fae95197415124e1b4b1c146129ee6d4294a	link	true	/test verify
pull-cdc-integration-storage-test	7872fae95197415124e1b4b1c146129ee6d4294a	link	true	/test cdc-integration-storage-test
pull-cdc-integration-kafka-test	7872fae95197415124e1b4b1c146129ee6d4294a	link	true	/test cdc-integration-kafka-test
pull-syncdiff-integration-test	7872fae95197415124e1b4b1c146129ee6d4294a	link	true	/test pull-syncdiff-integration-test

Full PR test history. Your PR dashboard.

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