disttask: add Multitask test

[JK1Zhang]

What problem does this PR solve?

Issue Number: close #46641

Problem Summary: add Multitask test

What is changed and how it works?

Check List

Tests

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

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

[ti-chi-bot]

Hi @JK1Zhang. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

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]

Hi @JK1Zhang. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

I understand the commands that are listed here.

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.

[hawkingrei]

/ok-to-test

[codecov]

Codecov Report

Merging #46646 (50020d8) into master (777e6da) will decrease coverage by 0.5816%.
Report is 3 commits behind head on master.
The diff coverage is 100.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #46646        +/-   ##
================================================
- Coverage   73.2843%   72.7027%   -0.5816%     
================================================
  Files          1319       1340        +21     
  Lines        395850     402264      +6414     
================================================
+ Hits         290096     292457      +2361     
- Misses        87263      91275      +4012     
- Partials      18491      18532        +41     

Flag	Coverage Δ
integration	27.8732% <0.0000%> (?)
unit	73.3129% <100.0000%> (+0.0286%)	⬆️

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

Components	Coverage Δ
dumpling	54.0444% <ø> (ø)
parser	85.0522% <ø> (+0.0977%)	⬆️
br	48.1688% <ø> (-4.2967%)	⬇️

[Benjamin2037]

LGTM

[ywqzzy]

/retest

[ywqzzy]

LGTM

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-09-05 13:03:07.058129162 +0000 UTC m=+2450551.607145146: ☑️ agreed by Benjamin2037.
• 2023-09-06 07:58:33.231333637 +0000 UTC m=+2518677.780349625: ☑️ agreed by ywqzzy.

[JK1Zhang]

/test

[ti-chi-bot]

@JK1Zhang: The /test command needs one or more targets.
The following commands are available to trigger required jobs:

• /test build
• /test canary-scan-security
• /test check-dev
• /test check-dev2
• /test mysql-test
• /test pingcap/tidb/canary_ghpr_unit_test
• /test pull-br-integration-test
• /test pull-common-test
• /test pull-e2e-test
• /test pull-integration-common-test
• /test pull-integration-copr-test
• /test pull-integration-ddl-test
• /test pull-integration-jdbc-test
• /test pull-integration-mysql-test
• /test pull-integration-prisma-test
• /test pull-mysql-connector-test
• /test pull-sqllogic-test
• /test pull-tiflash-test
• /test unit-test

The following commands are available to trigger optional jobs:

• /test pull-notify-when-compatibility-sections-changed

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

• pingcap/tidb/ghpr_build
• pingcap/tidb/ghpr_check
• pingcap/tidb/ghpr_check2
• pingcap/tidb/ghpr_mysql_test
• pingcap/tidb/ghpr_unit_test

In response to this:

/test

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]

@JK1Zhang: The /test command needs one or more targets.
The following commands are available to trigger required jobs:

• /test tiprow_fast_test

Use /test all to run all jobs.

In response to this:

/test

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: Benjamin2037, tangenta, ywqzzy

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [tangenta]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[JK1Zhang]

/test check-dev2

[tiprow]

@JK1Zhang: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

• /test tiprow_fast_test

Use /test all to run all jobs.

In response to this:

/test check-dev2

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.