fix(kafka): [Queue Instrumentation 25] Finish producer spans on failures

[adinauer]

PR Stack (Queue Instrumentation)

• feat(core): Queue Instrumentation #5249
• feat(core): [Queue Instrumentation 1] Add enableQueueTracing option and messaging span data conventions #5250
• feat(samples): [Queue Instrumentation 2] Add Kafka to Spring Boot 3 sample app #5253
• feat(spring-jakarta): [Queue Instrumentation 3] Add Kafka producer instrumentation #5254
• feat(spring-jakarta): [Queue Instrumentation 4] Add Kafka consumer instrumentation #5255
• feat(spring-boot-jakarta): [Queue Instrumentation 5] Add Kafka queue auto-configuration #5259
• test(samples): [Queue Instrumentation 6] Add Kafka queue system tests #5260
• feat(samples): [Queue Instrumentation 7] Add Kafka to Spring Boot 3 OTel sample apps #5265
• fix(spring-boot-jakarta): [Queue Instrumentation 8] Disable Sentry Kafka spans when OTel is active #5274
• fix(spring-jakarta): [Queue Instrumentation 9] Clean up stale ThreadLocal context in Kafka consumer interceptor #5279
• fix(spring-jakarta): [Queue Instrumentation 10] Fork root scopes and skip when OTel is active in Kafka consumer #5280
• fix(spring-jakarta): [Queue Instrumentation 11] Guard entire span lifecycle in Kafka producer interceptor #5281
• fix(spring-jakarta): [Queue Instrumentation 12] Add Kafka retry count attribute #5282
• fix(spring-jakarta): [Queue Instrumentation 13] Align enqueue time with Python #5283
• ref(kafka): [Queue Instrumentation 14] Extract sentry-kafka module #5288
• feat(samples): [Queue Instrumentation 15] Add opt-in Kafka console e2e coverage #5289
• fix(test): [Queue Instrumentation 16] Enable Kafka profile in system runner #5291
• feat(kafka): [Queue Instrumentation 17] Add manual consumer tracing helper #5312
• ref(samples): [Queue Instrumentation 18] Move Kafka sources into queues.kafka package #5313
• ref(samples): [Queue Instrumentation 19] Drop Kafka auto-config exclude from Spring Boot samples #5314
• ref(kafka): [Queue Instrumentation 20] Log Kafka instrumentation failures #5315
• fix(kafka): [Queue Instrumentation 21] Preserve third-party baggage on Kafka producer records #5316
• test(spring-boot-jakarta): [Queue Instrumentation 22] Cover spring-kafka class-absence gate #5318
• fix(spring-jakarta): [Queue Instrumentation 23] Install Kafka context before trace setup #5319
• fix(kafka): [Queue Instrumentation 24] Read all baggage headers on consumers #5320
• fix(kafka): [Queue Instrumentation 25] Finish producer spans on failures #5321
• fix(kafka): [Queue Instrumentation 26] Mark producer interceptor experimental #5322
• fix(spring-jakarta): [Queue Instrumentation 27] Delegate Kafka record thread-state hooks #5323
• test(samples): [Queue Instrumentation 28] Cover OTel Jakarta Kafka coexistence in CI #5324
• fix(spring-jakarta): [Queue Instrumentation 29] Set body_size on Spring Kafka consumer transaction #5325

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📜 Description

This closes the queue.publish producer span even when Kafka header injection fails.

The producer interceptor now keeps a local span reference, marks the span as INTERNAL_ERROR when instrumentation throws after span creation, and finishes it in finally.

It also adds a regression test covering header injection failures.

💡 Motivation and Context

The current producer path logs and fails open when instrumentation throws, but a failure after startChild(...) can leave the created child span unfinished.

Finishing that span in finally preserves the fail-open send behavior while keeping the span lifecycle consistent.

💚 How did you test it?

• ./gradlew spotlessApply apiDump :sentry-kafka:test --tests='io.sentry.kafka.SentryKafkaProducerInterceptorTest'

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

None.

⚠️ Merge this PR using a merge commit (not squash). Only the collection branch is squash-merged into main.

#skip-changelog

[sentry]

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Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.37.1 (1)	release

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