v1.39.0

Compare Source

API

Incubator

• BREAKING: Refactor ExtendedTracer, ExtendedSpanBuilder to reflect incubating API conventions
  (#​6497)

SDK

Exporter

• BREAKING: Serve prometheus metrics only on /metrics by default. To restore the previous behavior
  and serve metrics on all paths, override the default handler
  as demonstrated here.
  (#​6476)
• Make OTLP exporter memory mode API public
  (#​6469)
• Speed up OTLP string marshaling using sun.misc.Unsafe
  (#​6433)
• Add exporter data classes for experimental profiling signal type.
  (#​6374)
• Start prometheus http server with daemon thread
  (#​6472)
• Update the Prometheus metrics library and improve how units are included in metric names.
  (#​6473)
• Remove android animalsniffer check from prometheus exporter
  (#​6478)

Extensions

• Load file config YAML using core schema, ensure that env var substitution retains string types.
  (#​6436)
• Define dedicated file configuration SPI ComponentProvider
  (#​6457)

Tooling

• Normalize timestamps and file ordering in jars, making the outputs reproducible
  (#​6471)
• GHA for generating the post-release pull request
  (#​6449)

v1.38.0

Compare Source

API

• Stabilize synchronous gauge
  (#​6419)

Incubator

• Add put(AttributeKey, T) overload to EventBuilder
  (#​6331)

Baggage

• Baggage filters space-only keys
  (#​6431)

SDK

• Add experimental scope config to enable / disable scopes (i.e. meter, logger, tracer)
  (#​6375)

Traces

• Add ReadableSpan#getAttributes
  (#​6382)
• Use standard ArrayList size rather than max number of links for initial span links allocation
  (#​6252)

Metrics

• Use low precision Clock#now when computing timestamp for exemplars
  (#​6417)
• Update invalid instrument name log message now that forward slash / is valid
  (#​6343)

Exporters

• Introduce low allocation OTLP marshalers. If using autoconfigure, opt in
  via OTEL_JAVA_EXPERIMENTAL_EXPORTER_MEMORY_MODE=REUSABLE_DATA.
  • Low allocation OTLP logs marshaler
    (#​6429)
  • Low allocation OTLP metrics marshaler
    (#​6422)
  • Low allocation OTLP trace marshaler
    (#​6410)
  • Add memory mode support to OTLP exporters
    (#​6430)
  • Marshal span status description without allocation
    (#​6423)
  • Add private constructors for stateless marshalers
    (#​6434)
• Mark opentelemetry-exporter-sender-jdk stable
  (#​6357)
• PrometheusHttpServer prevent concurrent reads when reusable memory mode
  (#​6371)
• Ignore TLS components (SSLContext, TrustManager, KeyManager) if plain HTTP protocol is used for
  exporting
  (#​6329)
• Add is_remote_parent span flags to OTLP exported Spans and SpanLinks
  (#​6388)
• Add missing fields to OTLP metric exporters toString()
  (#​6402)

Extensions

• Rename otel.config.file to otel.experimental.config.file for autoconfigure
  (#​6396)

OpenCensus Shim

• Fix opencensus shim spanBuilderWithRemoteParent behavior
  (#​6415)

Tooling

• Add additional API incubator docs
  (#​6356)
• Run build on java 21
  (#​6370)
• Fix running tests with java 8 on macos
  (#​6411)
• Move away from deprecated gradle enterprise APIs
  (#​6363)