[docs] Clarify enqueue failure behavior in exporter helper#14544
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bradyuan wants to merge 1 commit intoopen-telemetry:mainfrom
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[docs] Clarify enqueue failure behavior in exporter helper#14544bradyuan wants to merge 1 commit intoopen-telemetry:mainfrom
bradyuan wants to merge 1 commit intoopen-telemetry:mainfrom
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songy23
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Feb 9, 2026
| - `queue_size` (default = 1000): Maximum size the queue can accept. Measured in units defined by `sizer` | ||
| - `batch`: see below. | ||
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| **Failure behavior**: If data cannot be added to the sending queue, it is dropped. This occurs when the queue has reached its configured capacity or, for persistent queues, when the underlying storage cannot accept additional data (for example, due to insufficient disk space or I/O errors). Because the data is rejected before entering the queue, it does not reach the exporter retry logic. Enqueue failures are reported by the otelcol_exporter_enqueue_failed_* metrics. |
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This is not true when block_on_overflow is enabled. In that case data is not immediately dropped when sending queue is full, and it may be enqueued later if the queue frees up enough space before request times out
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Adds documentation clarifying that data is dropped when it cannot be enqueued
(e.g., queue at capacity or persistent storage cannot accept writes).
This happens before exporter retry logic.
Fixes #5952.