Drop noopScope() wrapper caching from OT/OTel TypeConverters

[mcculls]

What Does This Do

The cached noopScopeWrapper only optimized an already-rare path (scope-manager depth-limit overflow); drop the special-casing and the now-unneeded dependency on AgentTracer.noopScope() identity.

Motivation

Further step towards being able to completely remove the noopScope() sentinel

Contributor Checklist

• Format the title according to the contribution guidelines
• Assign the type: and (comp: or inst:) labels in addition to any other useful labels
• Avoid using close, fix, or any linking keywords when referencing an issue
  Use solves instead, and assign the PR milestone to the issue
• Update the CODEOWNERS file on source file addition, migration, or deletion
• Update public documentation with any new configuration flags or behaviors
• Once approved, use merge queue to merge the PR

Jira ticket: [PROJ-IDENT]

[datadog-prod-us1-5]

More details

Removing noop scope wrapper caching is safe; the functional contract (scope.span() returns cached noop span wrapper) is preserved. All tests updated to reflect the new behavior correctly. No behavioral regressions detected.

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[datadog-prod-us1-5]

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 57.27% (-0.02%)

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[dd-octo-sts]

🟢 Java Benchmark SLOs — All performance SLOs passed

Suite	Status
Startup	🟢 pass

SLO thresholds are defined here based on automatically generated metrics. A warning is raised when results are within 5% of the threshold.

PR vs. master results

Scenario	Candidate	master	Δ (95% CI of mean)
startup:insecure-bank:iast:Agent	13.92 s	13.85 s	[-0.2%; +1.2%] (no difference)
startup:insecure-bank:tracing:Agent	12.86 s	13.00 s	[-1.8%; -0.4%] (maybe better)
startup:petclinic:appsec:Agent	16.85 s	16.75 s	[-0.4%; +1.6%] (no difference)
startup:petclinic:iast:Agent	16.90 s	16.99 s	[-1.5%; +0.4%] (no difference)
startup:petclinic:profiling:Agent	16.71 s	16.64 s	[-0.5%; +1.4%] (no difference)
startup:petclinic:sca:Agent	16.59 s	16.88 s	[-6.1%; +2.7%] (no difference)
startup:petclinic:tracing:Agent	15.65 s	16.25 s	[-7.8%; +0.4%] (no difference)

Commit: 5975f1ae · CI Pipeline · Benchmarking Platform UI

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Load and DaCapo benchmarks can be triggered manually in the GitLab pipeline. Results will appear in the Benchmarking Platform UI after completion.

[dd-octo-sts]

/merge

[gh-worker-devflow-routing-ef8351]

View all feedbacks in Devflow UI.

2026-07-21 07:18:19 UTC ℹ️ Start processing command /merge

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2026-07-21 07:18:24 UTC ℹ️ MergeQueue: pull request added to the queue

The expected merge time in master is approximately 1h (p90).

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2026-07-21 08:07:42 UTC ❌ MergeQueue: The build pipeline contains failing jobs for this merge request

Build pipeline has failing jobs for 3d5c3fb:

• test_inst: [zulu11, 5/8]

⚠️ Do NOT retry failed jobs directly (why?).

What to do next?

• Investigate the failures and when ready, re-add your pull request to the queue!
• If your PR checks are green, try to rebase/merge. It might be because the CI run is a bit old.
• Any question, go check the FAQ.

Details

Since those jobs are not marked as being allowed to fail, the pipeline will most likely fail.
Therefore, and to allow other builds to be processed, this merge request has been rejected and the pipeline got canceled.

[dd-octo-sts]

/merge

[gh-worker-devflow-routing-ef8351]

View all feedbacks in Devflow UI.

2026-07-21 08:12:57 UTC ℹ️ Start processing command /merge

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2026-07-21 08:13:02 UTC ℹ️ MergeQueue: pull request added to the queue

The expected merge time in master is approximately 1h (p90).

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2026-07-21 09:13:49 UTC ℹ️ MergeQueue: This merge request was merged