ddl, parser, planner: admin Pause/Resume on DDL jobs

[dhysum]

Add Pause/Resume admin command in parser and planner

What problem does this PR solve?

Issue Number: close #18015 #40041

Related issue number: #39751 #43061

Problem Summary:

What is changed and how it works?

1. Add admin pause ddl jobs 3,5;
   a. the job should be in Running or Queueing state
   b. change the state to be Pausing on command issued, in another PR
   c. background work will pause the job once scheduled, in another PR

2. Add admin resume ddl jobs 3,5;
   a. the job should be paused
   b. change the state to be Queueing on command issued, in another PR
   c. background worker will continue the job, no need to change

Check List

• 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.

- Add two commands `admin pause ddl jobs 3,5;` and `admin resume ddl jobs 3,5;`
- Add two state of the job, Pausing and Paused
- The job in Running / Queueing could be transferred to be Pausing by `admin pause ddl jobs 3,5;`, then be Paused by background worker
- Only Paused job can be resumed to be Queueing by `admin pause ddl jobs 3,5;
- New error code added: ErrCannotPauseDDLJob  = 9014, ErrCannotResumeDDLJob = 9015, ErrPausedDDLJob       = 9016

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Benjamin2037
• zimulala

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[ti-chi-bot]

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[ti-chi-bot]

Hi @dhysum. 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.

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[sre-bot]

All committers have signed the CLA.

[Benjamin2037]

/ok-to-test

[dhysum]

/ok-to-test

[dhysum]

/retest

[zimulala]

LGTM

[zimulala]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 40dee77

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #43511.