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v0.53.0

vectordotdev/vectorv0.53.0Jan 27, 2026by github-actions[bot]

AI Summary

Version 0.53.0 introduces powerful VRL functions for accessing internal Vector metrics, adds Apache Arrow IPC support to the ClickHouse sink for high-performance data transfer, and debuts a new Doris sink for Apache Doris databases.

Key Highlights

  • New VRL functions for internal metrics: get_vector_metric, find_vector_metrics, and aggregate_vector_metrics
  • ClickHouse sink now supports arrow_stream format for high-performance binary data transfer using Apache Arrow IPC
  • New Doris sink for sending log data to Apache Doris databases via Stream Load API
  • Added syslog codec supporting RFC5424 and RFC3164 formats
  • New moving-mean gauges for source and transform buffer utilization (EWMA)

New Features

  • VRL internal metric access functions
  • ClickHouse arrow_stream format support
  • Doris sink integration
  • Syslog codec (RFC5424/RFC3164)
  • Moving-mean buffer utilization metrics

Full Release Notes

The [COSE team](https://opensource.datadoghq.com/about/#the-community-open-source-engineering-team) is excited to announce version 0.53.0! šŸš€ 

**Release highlights**

* Functions to access internal Vector metrics are now available for VRL: `get_vector_metric`, `find_vector_metrics`, and `aggregate_vector_metrics`. You are now able to fetch snapshots of the metrics that are updated every `metrics_storage_refresh_period`.
* The `clickhouse` sink now supports the `arrow_stream` format option, enabling high-performance binary data transfer using Apache Arrow IPC. This provides significantly better performance and smaller payload sizes compared to JSON-based formats.
* Added a new `doris` sink for sending log data to Apache Doris databases using the Stream Load API.
* Added `syslog` codec for encoding Vector events to Syslog format. RFC5424 and RFC3164 are supported.
* Added moving-mean gauges for source and transform buffers (`source_buffer_utilization_mean` and `transform_buffer_utilization_mean`), so observers can track an exponentially weighted moving average (EWMA) of buffer utilization in addition to the instant level.

šŸ‘‰ This release contains several more enhancements, bug fixes and breaking changes. View the [full changelog here](https://vector.dev/releases/0.53.0/).