Merge metrics together into a metric with multiple fields into the most memory and network transfer efficient form.

Use this plugin when fields are split over multiple metrics, with the same measurement, tag set and timestamp. By merging into a single metric they can be handled more efficiently by the output.

[[aggregators.merge]]
  # no configuration

- cpu,host=localhost usage_time=42 1567562620000000000
- cpu,host=localhost idle_time=42 1567562620000000000
+ cpu,host=localhost idle_time=42,usage_time=42 1567562620000000000