test: stabilize deferred model concurrency regression

[IceS2]

Summary

• isolate the deferred-model concurrency probe from coverage tracing
• bound all
  synchronization and subprocess execution
• assert every worker produces the correct result

Testing

• full
  test module: 5 passed
• pytest-cov execution: passed
• unlocked mutation: failed with
  AttributeError(__pydantic_core_schema__) as expected

[Copilot]

Copilot was unable to review this pull request because the user who requested the review has reached their quota limit.

[github-actions]

❌ PR checklist incomplete

This PR cannot be merged until the following are addressed on its linked issue:

• No GitHub issue is linked. Link an issue in the Development section of the PR (or add Fixes #12345 to the description). For a same-org cross-repo issue, add Fixes open-metadata/<repo>#123 to the description.

The fields live on the linked issue in the Shipping project (open the issue → right sidebar → Projects). After you set them, re-run this check (or push a commit) — issue/project changes do not re-trigger it automatically.

Maintainers can bypass this check by adding the skip-pr-checks label.

[gitar-bot]

Code Review ✅ Approved

Isolates the deferred-model concurrency probe from coverage tracing and bounds synchronization to stabilize the test regression. No issues found.

Options

Display: compact → Showing less information.

Comment with these commands to change the behavior for this request:

Compact

gitar display:verbose

_{Was this helpful? React with 👍 / 👎 | Gitar | Powered by Gitar — free for open source}

[sonarqubecloud]

Quality Gate passed for 'open-metadata-ingestion'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

✅ Playwright Results — workflow succeeded

Validated commit 8b7660a28df0ffda6c5ccf09f1e52a2d21e070e6 in Playwright run 31026268297, attempt 1.

✅ 107 passed · ❌ 0 failed · 🟡 0 flaky · ⏭️ 0 skipped · 🧰 0 lifecycle flaky

Performance

Blocking targets: ✅ met · Optimization targets: 🟡 in progress

Shard-job maxima below are not the full workflow wall time; the linked run includes build, fixture, planning, and reporting.

🕒 Full workflow signal wall (to summary) 46m 45s

⏱️ Max setup 3m 9s · max shard execution 11m 29s · max shard-job elapsed before upload 17m 26s · reporting 4s

🌐 210.85 requests/attempt · 1.76 app boots/UI scenario · 0.00% common-shard skew

Optimization targets still in progress:

• Browser traffic was 210.85 requests per attempt (convergence target: fewer than 200).
• Application boot ratio was 1.76 per UI scenario (208 boots / 118 scenarios; convergence target: at most 1).

Shard	Passed	Failed	Flaky	Skipped	Lifecycle failed	Lifecycle flaky
✅ Shard chromium-01	46	0	0	0	0	0
✅ Shard ingestion-01	25	0	0	0	0	0
✅ Shard ingestion-02	36	0	0	0	0	0

📦 Download artifacts

How to debug locally

# Download playwright-test-results-<shard> artifact and unzip
npx playwright show-trace path/to/trace.zip    # view trace