JeremyXin opened a new pull request, #12169:
URL: https://github.com/apache/seatunnel/pull/12169
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### Purpose of this pull request
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## Summary
related: #12087, #12140
This PR implements the server-local advisory autoscaling Slice 1 extracted
from the original autoscaling implementation in PR #12140.
Included modules:
- Core autoscaling models and immutable snapshots
- Internal `AutoscalerRuntimeConfig` with defaults and validation
- Hierarchical policy evaluation
- Stabilization tracker, fencing, idempotency, and bounded state store
- Worker heartbeat metrics reporting
- ResourceManager worker sample and resource shortage integration
- CoordinatorService active-master lifecycle and evaluation loop
- Core policy and lifecycle tests
## Slice 1 Scope
This PR follows the server-local direction discussed in STIP #12087, with
one deliberate adjustment: it includes the internal
runtime wiring required to form a complete autoscaling vertical slice.
Compared with the stricter Slice 1 split, this PR also includes Worker
heartbeat metrics reporting, ResourceManager sample/shortage integration,
`ReportAutoscalerMetricsOperation`, and CoordinatorService lifecycle/evaluation
wiring.
These are internal Zeta runtime components required to complete the flow:
- Worker metrics → ResourceManager state → CoordinatorService evaluation →
advisory recommendation.
Slice 1 also introduces the internal `AutoscalerRuntimeConfig` with defaults
and validation. User-facing YAML/Option configuration will be added in Slice 2
and mapped to this internal model.
REST APIs, Prometheus/OpenMetrics exports, public configuration,
documentation, worker membership mutation, and running-job rescaling remain out
of scope for this PR.
### Does this PR introduce _any_ user-facing change?
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### How was this patch tested?
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### Check list
* [ ] If any new Jar binary package adding in your PR, please add License
Notice according
[New License
Guide](https://github.com/apache/seatunnel/blob/dev/docs/en/developer/new-license.md)
* [ ] If necessary, please update the documentation to describe the new
feature. https://github.com/apache/seatunnel/tree/dev/docs
* [ ] If necessary, please update `incompatible-changes.md` to describe the
incompatibility caused by this PR.
* [ ] If you are contributing the connector code, please check that the
following files are updated:
1. Update
[plugin-mapping.properties](https://github.com/apache/seatunnel/blob/dev/plugin-mapping.properties)
and add new connector information in it
2. Update the pom file of
[seatunnel-dist](https://github.com/apache/seatunnel/blob/dev/seatunnel-dist/pom.xml)
3. Add ci label in
[label-scope-conf](https://github.com/apache/seatunnel/blob/dev/.github/workflows/labeler/label-scope-conf.yml)
4. Add e2e testcase in
[seatunnel-e2e](https://github.com/apache/seatunnel/tree/dev/seatunnel-e2e/seatunnel-connector-v2-e2e/)
5. Update connector
[plugin_config](https://github.com/apache/seatunnel/blob/dev/config/plugin_config)
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