*: fix grpc client leak bug for AUTO_ID_CACHE=1 tables (#48870)

[ti-chi-bot]

This is an automated cherry-pick of #48870

What problem does this PR solve?

Issue Number: close #48869

Problem Summary:

What changed and how does it work?

Prior to this commit, each auto id allocator has it's own autoid client (a grpc connection inside), so if we have 60K tables there would be 60K tcp connections ...

After the fix, the autoid client is moved to domain so there should be only one autoid client instance. All the autoid allocator share this instance now.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

See the reproduce steps in the issue.
The test check tcp connection counts, it's harder to do that in unit test

• 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.

Fix grpc client leak bug for AUTO_ID_CACHE=1 tables, this bug is more likely to happen when there are lots of tables, and the error message is "connect: cannot assign requested address"

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-7.5@069631e). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #48892   +/-   ##
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  Coverage               ?   72.3858%           
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  Files                  ?       1400           
  Lines                  ?     409862           
  Branches               ?          0           
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  Hits                   ?     296682           
  Misses                 ?      93583           
  Partials               ?      19597           

Flag	Coverage Δ
unit	72.3858% <0.0000%> (?)

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

Components	Coverage Δ
dumpling	53.9913% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.3455% <0.0000%> (?)

[tiancaiamao]

/test build
/test check_dev_2

[ti-chi-bot]

@tiancaiamao: The specified target(s) for /test were not found.
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[tiancaiamao]

/test build

[tiprow]

@tiancaiamao: No presubmit jobs available for pingcap/tidb@release-7.5

In response to this:

/test build

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[tiancaiamao]

/test check_dev_2

[ti-chi-bot]

@tiancaiamao: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

• /test build
• /test check-dev
• /test check-dev2
• /test mysql-test
• /test unit-test

The following commands are available to trigger optional jobs:

• /test pull-br-integration-test

Use /test all to run the following jobs that were automatically triggered:

• pingcap/tidb/release-7.5/ghpr_build
• pingcap/tidb/release-7.5/ghpr_check
• pingcap/tidb/release-7.5/ghpr_check2
• pingcap/tidb/release-7.5/ghpr_mysql_test
• pingcap/tidb/release-7.5/ghpr_unit_test

In response to this:

/test check_dev_2

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.

[tiprow]

@tiancaiamao: No presubmit jobs available for pingcap/tidb@release-7.5

In response to this:

/test check_dev_2

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.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lance6716, tangenta

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Needs approval from an approver in each of these files:

• br/pkg/lightning/OWNERS [lance6716]
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-12-14 03:39:58.532856504 +0000 UTC m=+500289.570083426: ☑️ agreed by lance6716.
• 2023-12-14 04:15:03.861086631 +0000 UTC m=+502394.898313558: ☑️ agreed by tangenta.