- Add custom gRPC encoding for pdata that uses custom marshal/unmarshal logic and falls back to default for non‑pdata requests.
- Avoid copying pcommon.Map when the origin is unchanged, greatly improving performance for OTTL map functions.
- Fix parsing of OTLP payloads with non‑packed repeated primitive fields, restoring ingestion of Histogram, ExponentialHistogram, and Profile data.
v1.40.0/v0.134.0
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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.