[ISSUE #10600]🐛Report persistence conclusions for supervised topic config mutations

[LouisDeconinck]

Which Issue(s) This PR Fixes(Closes)

• Fixes [Bug🐛] Report the persistence conclusion for supervised topic config mutations #10600

Brief Description

The supervised topic config path erased the persistence conclusion: TopicConfigCommand::Persist/Finalize completed through oneshot::Sender<Result<()>>, so update_topic_config_cas could only pass persistence.is_ok() to complete_supervised_persistence, and an unconfirmed replacement was indistinguishable from a definite pre-commit failure.

• TopicConfigCommandReport now flows through the command completion, carrying the MetadataWriteConclusion of the last persistence step plus a separate registration_error field.
• persist_stable classifies the actor observation through conclude_metadata_write and returns the conclusion instead of folding it into Result<()>; a conclusion that keeps the dirty marker returns at once rather than looping on a state the actor could not confirm.
• The registration callback only runs on a known-durable write; a registration failure is reported as itself (not as a persistence failure, not as unconfirmed), and the post-registration write's conclusion supersedes the first one for the same target.
• TopicConfigManager::complete_supervised_persistence takes the conclusion instead of a bool, matching the supervised owners migrated in [Bug🐛] Reconcile unconfirmed metadata commits in Broker and Auth #10598; the per-topic marker is still released only by a known-durable conclusion.
• MutationPersistenceState gains unconfirmed: the supervised CAS handlers report it for an unconfirmed conclusion through a shared metadata_reconciliation::persistence_state mapping, while definite pre-commit failures and dirty-marker rejections keep reporting failed — the same rule now applies uniformly to the topic, subscription-group, and request-mode paths. The client decoder accepts and maps the new state, and the public client enum, admin adapter, and MCP control schema propagate it; every layer still treats unconfirmed as non-durable, so verification rereads the target and follow-up compare-and-set stays blocked. Fire-and-forget callers flatten the report through TopicConfigCommandReport::into_result.

How Did You Test This Change?

• cargo fmt -p rocketmq-broker -- --check: clean (all touched crates format-clean).
• cargo clippy -p rocketmq-broker --no-deps --all-targets -- -D warnings: clean; also clean for rocketmq-protocol, rocketmq-client-rust --features admin-mutation, and rocketmq-admin-core --features mutation-client-adapter.
• cargo test -p rocketmq-broker --lib topic_config: 31 passed, including three regressions: an injected filesystem failing at parent-sync reports Unconfirmed/CommitUnconfirmed and keeps the supervised marker; failing at temporary-write reports FailedBeforeCommit and keeps the marker; a failing registration callback reports the registration error alongside a durable conclusion and the marker is released.
• cargo test -p rocketmq-broker --lib state_cas, --lib request_mode, --lib metadata_reconciliation: all pass, including a new mapping test covering durable → persisted, definite failure → failed, and unconfirmed → unconfirmed.
• cargo test -p rocketmq-client-rust --features admin-mutation --lib supervised_mutation_decode: 8 passed; both closed code/body matrices now enumerate unconfirmed, and a typed-body case proves it decodes to the public client state.
• cargo test -p rocketmq-admin-core --features mutation-client-adapter --lib supervised: 31 passed, including a new case where an unconfirmed write is reported as unconfirmed, still post-read-verified, and still blocks follow-up compare-and-set.
• rocketmq-ai/rocketmq-mcp-control: cargo check --locked (default and --features write-tools), the control_reviewed_tool_schemas snapshot, the persistence-mapping test, and python scripts/check_control_boundary.py --features write-tools all pass. The workspace lock file is regenerated because it predates the rocketmq-error edge added to rocketmq-security-api in [ISSUE #10157]♻️Remove legacy error hierarchy and complete canonical cutover #10217.

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Walkthrough

The coordinator now reports metadata write conclusions and registration errors. Supervised topic mutations use these reports to distinguish durable, unconfirmed, and pre-commit outcomes while preserving per-topic dirty markers. Broker callers convert reports into existing result types.

Changes

Topic persistence reporting

Layer / File(s)	Summary
Coordinator report and persistence conclusions rocketmq-broker/src/topic/manager/topic_config_coordinator.rs, rocketmq-broker/tests/..., CHANGELOG.md	TopicConfigCommandReport carries MetadataWriteConclusion and registration errors. Persistence and completion channels return the report. Tests cover durable, unconfirmed, pre-commit failure, and registration failure outcomes.
Supervised topic mutation handling rocketmq-broker/src/processor/admin_broker_processor/..., rocketmq-broker/src/topic/manager/topic_config_manager.rs	Supervised topic handlers map report conclusions to response states and pass the conclusion to dirty-marker completion.
Broker caller result conversion rocketmq-broker/src/broker/..., rocketmq-broker/src/processor/processor_service/..., rocketmq-broker/src/slave/...	Broker persistence, registration, retry-topic, reconciliation, and synchronization paths convert command reports before existing error handling.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix · Severity of issue fixed: Medium

Sequence Diagram(s)

sequenceDiagram
  participant TopicRequestHandler
  participant TopicConfigCoordinator
  participant MetadataIoActor
  participant TopicConfigManager
  TopicRequestHandler->>TopicConfigCoordinator: persist_and_register_topic_updates
  TopicConfigCoordinator->>MetadataIoActor: persist metadata
  MetadataIoActor-->>TopicConfigCoordinator: MetadataWriteConclusion
  TopicConfigCoordinator-->>TopicRequestHandler: TopicConfigCommandReport
  TopicRequestHandler->>TopicConfigManager: complete_supervised_persistence(conclusion)

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Suggested reviewers: mxsm

Merge Risk: 🟡 Moderate · up to 6c520

An unconfirmed replacement may have reached disk, while a pre-commit failure did not. Returning the same state for both prevents clients from responding safely to the actual outcome, so this should be corrected before merge.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 40.82% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 49 functions across 11 files. (1 skipped:…	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Issue #10600 requires the supervised topic path to preserve MetadataWriteConclusion. The coordinator now returns TopicConfigCommandReport with the persistence conclusion and a separate registration er…
Out of Scope Changes check	✅ Passed	The changes stay within Issue #10600. The caller updates adapt the changed coordinator completion contract. The manager changes implement conclusion-based marker handling. The added changelog entry an…
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: reporting persistence conclusions for supervised topic configuration mutations. The issue reference and bug emoji add minor noise but do not reduce clarity…

Full details: Docstring Coverage

Explanation

Docstring coverage is 40.82% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 49 functions across 11 files. (1 skipped: 1 unsupported.)

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Unconfirmed writes leave markers without fail
Pre-commit errors speak their name
Callback faults join the report, not the blame
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Actionable comments posted: 1

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Inline comments:
In
`@rocketmq-broker/src/processor/admin_broker_processor/topic_request_handler.rs`:
- Around line 566-570: Update the StateCasResultBody response model and handler
logic around MutationPersistenceState so Unconfirmed remains distinguishable
from FailedBeforeCommit through an explicit typed discriminator or distinct
persistence state. Preserve the existing SystemError response behavior as
appropriate, and retain the per-topic marker for both outcomes.

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📥 Commits

Reviewing files that changed from the base of the PR and between 3451f52 and 6c5200d.

📒 Files selected for processing (12)

• CHANGELOG.md
• rocketmq-broker/src/broker/broker_admin_runtime.rs
• rocketmq-broker/src/broker/broker_pre_online_capability.rs
• rocketmq-broker/src/broker/broker_registration_runtime.rs
• rocketmq-broker/src/broker_runtime.rs
• rocketmq-broker/src/processor/admin_broker_processor/broker_config_request_handler.rs
• rocketmq-broker/src/processor/admin_broker_processor/topic_request_handler.rs
• rocketmq-broker/src/processor/processor_service/pop_revive_service.rs
• rocketmq-broker/src/slave/slave_synchronize.rs
• rocketmq-broker/src/topic/manager/topic_config_coordinator.rs
• rocketmq-broker/src/topic/manager/topic_config_manager.rs
• rocketmq-broker/tests/broker_runtime/unit.rs

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[mxsm]

@LouisDeconinck Please resolve conflicts

[LouisDeconinck]

Note on the failing Build & Test (ubuntu-latest) job: it did not fail on a test assertion — it hit the 6h job timeout after processor::send_message_processor::structured_store::tests::structured_send_after_write_completions_are_correlated_by_request_id stopped making progress (last log line: "has been running for over 60 seconds"). That test and its fixture are unchanged by this PR, and the same test passed on the earlier run of this branch.

The same job is currently failing on main as well (e.g. scheduled run 34786933915 and the latest main push run 34805986046) with broker::log_filter_control::tests::control_applies_replaces_and_restores_filters_without_reinstalling_subscriber and broker_runtime::tests::scheduled_tasks_shutdown_precedes_exclusive_message_store_shutdown — both also failed here before the hang. So this check failure looks unrelated to this change rather than a regression from it.

[mxsm]

Note on the failing Build & Test (ubuntu-latest) job: it did not fail on a test assertion — it hit the 6h job timeout after processor::send_message_processor::structured_store::tests::structured_send_after_write_completions_are_correlated_by_request_id stopped making progress (last log line: "has been running for over 60 seconds"). That test and its fixture are unchanged by this PR, and the same test passed on the earlier run of this branch.

The same job is currently failing on main as well (e.g. scheduled run 34786933915 and the latest main push run 34805986046) with broker::log_filter_control::tests::control_applies_replaces_and_restores_filters_without_reinstalling_subscriber and broker_runtime::tests::scheduled_tasks_shutdown_precedes_exclusive_message_store_shutdown — both also failed here before the hang. So this check failure looks unrelated to this change rather than a regression from it.

@LouisDeconinck The issue you mentioned will be fixed later. There are currently many conflicts; we need to resolve the PR conflicts.

[LouisDeconinck]

Rebased onto latest main — the merge conflict is resolved. The only overlapping file was topic_request_handler.rs (upstream's TopicConfigCommandOutcome refactor vs. this PR's unconfirmed-persistence mapping); merged so non-durable conclusions still map through persistence_state while durable-but-registration-failed reports SystemError + Persisted. CHANGELOG entry re-appended. CI timeout on the previous run was the unrelated hanging test you noted.