[Feature] [Zeta] Optimize CoordinatorService ThreadPool Configuration to Prevent Potential OOM

[xiaochen-zhou]

Purpose of this pull request

Optimize CoordinatorService ThreadPool Configuration to Enhance System Performance and Stability

Does this PR introduce any user-facing change?

yes

How was this patch tested?

add new tests

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update plugin-mapping.properties and add new connector information in it
  2. Update the pom file of seatunnel-dist
  3. Add ci label in label-scope-conf
  4. Add e2e testcase in seatunnel-e2e
  5. Update connector plugin_config
• Update the release-note.

[hailin0]

Please update the docs

[liunaijie]

when add this parameter, it will limit the thread size.
now the default is int max, if we use a small value as the default value, it maybe cause exception when user upgrade version.
so I suggest use int max as default value, and describe this feature in document let user update it by self.

[liunaijie]

I see the default value is int max, we can remove max-thread-num config from yaml, If user need change, they can update it by self.

[Hisoka-X]

I see the default value is int max, we can remove max-thread-num config from yaml, If user need change, they can update it by self.

+1

[xiaochen-zhou]

I see the default value is int max, we can remove max-thread-num config from yaml, If user need change, they can update it by self.

done.

[xiaochen-zhou]

Please update the docs

done.

[liunaijie]

maybe use the max job count can be executed at same time is more clear to explane this.

user don't need to know what's coordinator

[xiaochen-zhou]

maybe use the max job count can be executed at same time is more clear to explane this.

user don't need to know what's coordinator

ok

[Hisoka-X]

lgtm, waiting ci pass.

[xiaochen-zhou]

lgtm, waiting ci pass.

done.

[Hisoka-X]

Oh, amost forget. Please update https://github.com/apache/seatunnel/blob/7d72c85ed8ffba522df29b11f5c60d420ac6471f/docs/en/seatunnel-engine/separated-cluster-deployment.md#47-job-scheduling-strategy too.

[Hisoka-X]

Waiting CI passed.

[xiaochen-zhou]

Waiting CI passed.

done.