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Buffer counter underflowed warnings #23872

@benjamin-awd

Description

@benjamin-awd

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Problem

Recently upgraded to 0.50.0, started seeing this appearing in the logs for multiple Vector deployments:

2025-09-29T22:22:42.829500Z  WARN sink{component_kind="sink" component_id=gcs component_type=gcp_cloud_storage}: vector_buffers::buffer_usage_data: Buffer counter underflowed. Clamping value to `0`. current=816 delta=820
2025-09-29T22:22:42.829563Z  WARN sink{component_kind="sink" component_id=gcs component_type=gcp_cloud_storage}: vector_buffers::buffer_usage_data: Buffer counter underflowed. Clamping value to `0`. current=2066045 delta=2073055
2025-09-29T22:27:42.975814Z  WARN sink{component_kind="sink" component_id=gcs component_type=gcp_cloud_storage}: vector_buffers::buffer_usage_data: Buffer counter underflowed. Clamping value to `0`. current=2073055 delta=2073135
2025-09-29T22:39:43.048368Z  WARN sink{component_kind="sink" component_id=gcs component_type=gcp_cloud_storage}: vector_buffers::buffer_usage_data: Buffer counter underflowed. Clamping value to `0`. current=2073135 delta=2073215

Configuration


Version

0.50.0

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    domain: metricsAnything related to Vector's metrics eventstype: bugA code related bug.

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