Prometheus time series data is identified by Metric name and (optional) key-value pairs called labels.
Ref - https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels

Prometheus exporter needs to append attributes in the metrics-name to uniquely identify the metrics. As of now, this is not happening. The label argument is passed empty here and here. This needs to be fixed.