feature: introduces diff
and non_negative_diff
into BasicStats Aggregator plugin
#4435
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post-processing counter metrics with influxdb's aggregate-functions leads to issues with grafana panels (e.g. see influxdata/influxdb#6451 (comment), influxdata/influxdb#8010). In many use cases only the aggregate/derivative data is of interest, therefore this PR makes the diff and non-negative-diff aggregate functions available in telegraf.
diff
: provides the difference between last and current valuenon_non_negative_diff
: same asdiff
, but negative difference value is ignoredRequired for all PRs: