Aggregation interval: 1m, bucket span: 1m

when running job in machine learning i see:
aggregation interval: 1m, bucket span: 1m
i defined indeed bucket of 1 minute
i didnt see the definution of interval - from where it takes it?

any one knows?

Also, if your job could also possibly leverage ES aggregations as well. See https://www.elastic.co/guide/en/machine-learning/7.9/ml-configuring-aggregation.html