graphite-project/whisper — pull request #92 by penpen (2014-10-20 12:02:55+00:00)
Title: support for 'avg_zero' aggregation

Hi!
There is support for average aggregation which treats null values as zero, since for avg traffic/bandwidth
values, ignoring 'null' values makes hourly/daily traffic calculations wrong (hitcount(metric, "1d", true) for example).