Version 1.29.0

API

• Update Span javadoc to allow null/empty attr values (#5616)

SDK

• Add Sdk{Signal}ProviderBuilder#addResource(Resource) method to merge Resource with current (#5619)

Metrics

• Add LongHistogramAdviceConfigurer to improve api surface types (#5689)
• Instruments with names which are case-insensitive equal contribute to same metric, advice is not part of instrument identity. (#5701)

Exporter

• Add OtlpHttp{Signal}Exporter#toBuilder() methods (#5652)
• Add OtlpGrpc{Signal}Exporter#toBuilder() methods (#5680)
• Add #toString to OTLP exporters (#5686)
• Break out GrpcSender, GrpcSenderProvider (#5617)

SDK Extensions

• BREAKING: Delete zpages (#5611)
• Initialize file configuration with generated model classes and parse method (#5399)
• Refactor SpiUtil to improve mocking (#5679)
• Switch from snakeyaml to snakeyaml engine (#5691)
• Add experimental autoconfigure support for customizing cardinality limit (#5659)
• Reorganize autoconfigure docs by signal (#5665)

Testing

• Add hasResourceSatisfying to LogRecordDataAssert (#5690)

OpenCensus Shim

• Change OpenCensus shim default sampling to defer to OpenTelemetry (#5604)

Project Tooling

• Update Gradle Wrapper from 8.2 to 8.2.1 (#5618)
• Fix gradle java version requirement warning (#5624)
• Refer to Adoptium/Temurin instead of AdoptOpenJDK (#5636)
• Use OtelVersionClassPlugin instead of reading version from resource (#5622)
• Enforce build-graal success in required status check (#5696)

🙇 Thank you

This release was possible thanks to the following contributors who shared their brilliant ideas and awesome pull requests:

@aabmass
@akats7
@breedx-splk
@cartermp
@chalin
@jack-berg
@jkwatson
@jsuereth
@keithc-ca
@mateuszrzeszutek
@parth1601
@svrnm
@trask
@tylerbenson
@zeitlinger