The CheckConfig function validates a configuration by creating and immediately discarding an input. However, a potential conflict arises when CheckConfig is used with autodiscover in Kubernetes.

Autodiscover accumulates configuration changes and applies them in batches. This can be problematic if a stop event for a pod is closely followed by a start event for the same pod (e.g., during a pod restart) before the inputs are reloaded. In this scenario, autodiscover might attempt to validate the configuration for the start event while the input for the pod is already running. This would lead to filestream input manager to see two inputs with the same ID, triggering a log warning.

Although this situation generates a warning, it doesn't result in data duplication. As the second input is only created to validate the configuration and later discarded. Also the reload process will ensure only new inputs are created, any input already running won't be duplicated.

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