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[Question #246005]: Dataset filled with nulls?

 

New question #246005 on Graphite:
https://answers.launchpad.net/graphite/+question/246005

I'm trying to figure out what data I'm actually sending to Graphite.  when I query the raw data, it appears to be filled with null vales for every minute.  

E.g. I ask for "http://graphite.example.com/render?target=server.events.hourly_created&format=json";

I get: 
[{"target": "server.events.hourly_created", "datapoints": [[null, 1395619260], [null, 1395619320], [null, 1395619380], [null, 1395619440], [null, 1395619500], [null, 1395619560], [null, 1395619620], [null, 1395619680], [null, 1395619740], [null, 1395619800], [null, 1395619860], [null, 1395619920], [null, 1395619980], [null, 1395620040], [null, 1395620100], [null, 1395620160], [null, 1395620220], [null, 1395620280], [null, 1395620340], [null, 1395620400], [null, 1395620460], [null, 1395620520], [null, 1395620580], [null, 1395620640], [null, 1395620700],...

Is the data before 1395619260 (2014-03-23 17:01:00 -0700, 24 hours ago) deleted?  It's not showing up in a graph either.  

Is the data set supposed to be filled in with nulls for every 60-seconds elapsed?  AFAICT, I'm only sending every hourly value and only if it's not zero.

What I'm trying to achieve is figure out if I'm using Graphite in a useful way, and I'm hampered by not understanding where all these null values are coming from.  I've tried looking for information but haven't found much; in part because googling on "graphite" and "null values" and "data" isn't really helping.

Thanks 
Lisa

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