New question #233013 on Graphite:
https://answers.launchpad.net/graphite/+question/233013

I have a single graphite node, running ceres and mega-carbon from Git. I'm 
processing about 100k metrics a minute and it's mostly working properly. 
However, there are a number of (seemingly) random metrics that from time to 
time will store 2 minutes of data and will start zeroing anything older than 
two minutes.

Using both ceres-read and slicecat produces the same output:
Ceres-read
 
Wed Jul 17 10:47:00 2013  0.0
Wed Jul 17 10:47:10 2013        0.0
Wed Jul 17 10:47:20 2013        0.0
Wed Jul 17 10:47:30 2013        0.0
Wed Jul 17 10:47:40 2013        0.0
Wed Jul 17 10:47:50 2013        0.0
Wed Jul 17 10:48:00 2013        23.4
Wed Jul 17 10:48:10 2013        19.9
Wed Jul 17 10:48:20 2013        26.4
Wed Jul 17 10:48:30 2013        21.7
Wed Jul 17 10:48:40 2013        22.6
Wed Jul 17 10:48:50 2013        26.7
Wed Jul 17 10:49:00 2013        24.1
Wed Jul 17 10:49:10 2013        23.4
Wed Jul 17 10:49:20 2013        18.0
Wed Jul 17 10:49:30 2013        29.3
Wed Jul 17 10:49:40 2013        29.6
Wed Jul 17 10:49:50 2013        21.6
 
 
Slicecat
 
[1374058020]  Wed Jul 17 10:47:00 2013  0.0
[1374058030]    Wed Jul 17 10:47:10 2013        0.0
[1374058040]    Wed Jul 17 10:47:20 2013        0.0
[1374058050]    Wed Jul 17 10:47:30 2013        0.0
[1374058060]    Wed Jul 17 10:47:40 2013        0.0
[1374058070]    Wed Jul 17 10:47:50 2013        0.0
[1374058080]    Wed Jul 17 10:48:00 2013        23.4
[1374058090]    Wed Jul 17 10:48:10 2013        19.9
[1374058100]    Wed Jul 17 10:48:20 2013        26.4
[1374058110]    Wed Jul 17 10:48:30 2013        21.7
[1374058120]    Wed Jul 17 10:48:40 2013        22.6
[1374058130]    Wed Jul 17 10:48:50 2013        26.7
[1374058140]    Wed Jul 17 10:49:00 2013        24.1
[1374058150]    Wed Jul 17 10:49:10 2013        23.4
[1374058160]    Wed Jul 17 10:49:20 2013        18.0
[1374058170]    Wed Jul 17 10:49:30 2013        29.3
[1374058180]    Wed Jul 17 10:49:40 2013        29.6
[1374058190]    Wed Jul 17 10:49:50 2013        21.6

Using ceres-write to store data at an old timestamp will store the data 
correctly and will not be over written. I'm not using any clustering, just 
carbon writer listening on port 2003 and 2004 which is forwarded from a load 
balancer (the load balancer was put in place when I started as the plan is to 
have multiple graphite nodes).

Any help with this would be greatly appreciated. 

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