This is a cache of https://www.elastic.co/guide/en/beats/libbeat/current/release-notes-8.16.3.html. It is a snapshot of the page at 2025-09-25T04:08:54.428+0000.
Beats version 8.16.3 | Beats Platform Reference [8.19] | Elastic
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Beats version 8.16.3

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Known Issues

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Filebeat

  • The Filestream input does not enforce the restrictions documented for the clean_inactive option, thus allowing configurations that can lead to data re-ingestion issues.
  • When clean_inactive: 0, Filestream cleans the state of all files on start up, effectively re-ingesting all files on restart. Set clean_inactive: -1 to disable this behavior.

Breaking changes

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Affecting all Beats

  • Default Docker base image was reverted to Ubuntu 20.04 due to incompatability issues with glibc. 42144

Bugfixes

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Filebeat

  • Fix streaming input handling of invalid or empty websocket messages. 42036
  • Fix awss3 document ID construction when using the CSV decoder. 42019
  • Fix Netflow Template Sharing configuration handling. 42080

Metricbeat

  • [K8s Integration] Enhance HTTP authentication in case of token updates for Apiserver, Controllermanager and Scheduler metricsets. 41910 42016

Added

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Affecting all Beats

  • When running under Elastic-Agent Kafka output allows dynamic topic in topic field. 40415
  • The script processor has a new configuration option that only uses the cached javascript sessions and prevents the creation of new javascript sessions.
  • Update Go version to 1.22.10. 42095
  • Reduce memory consumption of k8s autodiscovery and the add_kubernetes_metadata processor when Deployment metadata is enabled
  • Add lowercase processor. 22254 41424
  • Add uppercase processor. 22254 41535
  • Replace compress/gzip with https://github.com/klauspost/compress/gzip library for gzip compression. 41584
  • Add regex pattern matching to add_kubernetes_metadata processor. 41903

Filebeat

  • Added OAuth2 support with auto token refresh for websocket streaming input. 41989 42212
  • Added infinite & blanket retry options to websockets and improved logging and retry logic. 42225

Metricbeat

  • Add use_performance_counters to collect CPU metrics using performance counters on Windows for system/cpu and system/core 41965