Heka Insights Agent Adds Idempotency Keys to Prevent Duplicate Metrics Ingestion

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The Heka Insights Agent has introduced X-Idempotency-Key header support for OTLP metrics exports to address the risk of duplicate data ingestion during retried requests. Each metrics batch is assigned a unique UUID that remains constant across all retry attempts, while a new batch always receives a fresh UUID. This change targets a known gap in distributed systems where a failed request does not guarantee the server never processed it, leaving ingestion gateways unable to distinguish retries from new batches. The update enables backend services to safely deduplicate exports, resulting in cleaner retry behavior and more reliable telemetry pipelines. To protect log integrity, the agent masks idempotency key values in logs rather than exposing them in full.

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