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v0.52.0

vectordotdev/vectorv0.52.0Dec 16, 2025by github-actions[bot]

AI Summary

Version 0.52.0 enhances Vector's observability with new buffer utilization metrics, introduces trace-to-log transformation capabilities, and improves reliability with Docker daemon retry logic.

Key Highlights

  • New buffer utilization metrics for sources and transforms (source_buffer_*, transform_buffer_*)
  • Introduced trace_to_log transform for converting traces to logs
  • Blackhole sink now implements end-to-end acknowledgements
  • GELF decoder supports strict and relaxed validation modes
  • Docker_logs source retries Docker daemon communication with exponential backoff

New Features

  • Buffer utilization metrics
  • trace_to_log transform
  • End-to-end acknowledgements for blackhole
  • GELF decoder validation modes
  • Docker logs retry with exponential backoff

Full Release Notes

The [COSE team](https://opensource.datadoghq.com/about/#the-community-open-source-engineering-team) is excited to announce version 0.52.0! 🚀

Release highlights:

* Enhanced Vector’s observability with new buffer utilization metrics for sources and transforms ([source_buffer_*](https://vector.dev/docs/reference/configuration/sources/internal_metrics/#source_buffer_max_byte_size) and [transform_buffer_*](https://vector.dev/docs/reference/configuration/sources/internal_metrics/#transform_buffer_max_byte_size) metrics), providing visibility into buffer capacity, usage and historical usage levels.
* Introduced trace_to_log transform that allows converting traces to logs.
* The blackhole sink now implements end-to-end acknowledgements.
* The GELF decoder now supports a validation option with two modes: strict (default) and relaxed. When set to relaxed, the decoder will parse GELF messages from sources that don’t strictly follow the GELF specification.
* The docker_logs source now retries Docker daemon communication failures with exponential backoff.

This release contains several more enhancements, bug fixes and breaking changes. 

👉 View the [full changelog here](https://vector.dev/releases/0.52.0).