Wire OpenTelemetry into ClassifiersExample#117
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Without `braintrust.openTelemetryCreate()` the eval runs against the no-op tracer and no spans reach Braintrust, so the experiment shows up empty in the UI despite the REST experiment record being created. Every other example under examples/ already makes this call right after `Braintrust.get()` (see e.g. examples/experiment/.../ExperimentExample.java). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Andrew Kent (realark)
approved these changes
May 29, 2026
Andrew Kent (realark)
approved these changes
May 29, 2026
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Summary
braintrust.openTelemetryCreate()call toClassifiersExampleso spans actually reach Braintrust. Every other example already does this immediately afterBraintrust.get().Background
When the classifier feature merged (#114) and the examples were subsequently reorganised into per-example subprojects (#116),
ClassifiersExamplewas the only example left without an explicit OpenTelemetry initialisation. As a result, running./gradlew :examples:classifiers:runwould create the experiment via REST but the eval spans would land on the no-op tracer and never be exported, leaving the experiment empty in the UI.Test plan
./gradlew :examples:classifiers:runagainst theBraintrust SDKsorg — printed experiment now contains five root spans (BTQLcount(_xact_id)returns 5).VCR_MODE=replay ./gradlew :braintrust-sdk:test --tests '*ClassifierEvalTest*'— no regression.🤖 Generated with Claude Code