- Breaking API changes: ServiceExtension renamed to Extension, consumerdata types removed or moved, custom OpenCensus conventions and deprecated unmarshaler/componenterror utilities removed, and TimestampUnixNanos renamed to Timestamp.
- New features: Prometheus exporter rebuilt on the official client with metric expiration option, logging exporter adds AttributeMap support, and added instrumentation library semantic conventions.
- Bug fixes: Fixed Shutdown issues in OTLP receiver and batch processor, corrected empty‑attribute handling in logging exporter, and fixed counter name check in Prometheus remote write exporter.
Release version 0.22.0
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Add pkg.exporterhelper.queueBatchEnabled feature gate to enable batch settings by default.
Introduced queuebatchprocessor to replace the legacy batchprocessor, promoted memory‑limiter extension to beta stability, and marked configgrpc as stable.