New question #249502 on Graphite:
https://answers.launchpad.net/graphite/+question/249502
I'm setting up Graphite 0.10 using ceres and megacarbon. (using the latest
checkout from the git repository)
While aggregating data with sum aggregationMethod using 'ceres-maintenance
rollup',
CeresNode.read is merging data from multiple slices incorrectly.
Here is repro step.
in my storage-rules.conf
[counter-metrics]
pattern = \.count$
retentions = 1s:10m, 10s:1h, 1m:12h, 10m:30d
aggregation-method = sum
in the ceres node directory,
.ceres-node
{"timeStep": 1, "retentions": [[1, 600], [10, 360], [60, 720], [600, 4320]],
"xFilesFactor": 0.5, "aggregationMethod": "sum", "retention": "1m:30d"}
After feeding data for about 15 minutes, I have data in 1 second resolution
only.
<slicecat [email protected]>
[1401395951] Thu May 29 13:39:11 2014 21.0
[1401395952] Thu May 29 13:39:12 2014 422.0
[1401395953] Thu May 29 13:39:13 2014 nan
[1401395954] Thu May 29 13:39:14 2014 426.0
...
[1401396401] Thu May 29 13:46:41 2014 397.0
[1401396402] Thu May 29 13:46:42 2014 420.0
[1401396403] Thu May 29 13:46:43 2014 415.0
[1401396404] Thu May 29 13:46:44 2014 409.0
[1401396405] Thu May 29 13:46:45 2014 296.0
<node-read>
Thu May 29 13:39:11 2014 21.0
Thu May 29 13:39:12 2014 422.0
Thu May 29 13:39:13 2014 None
Thu May 29 13:39:14 2014 426.0
...
Thu May 29 13:46:41 2014 397.0
Thu May 29 13:46:42 2014 420.0
Thu May 29 13:46:43 2014 415.0
Thu May 29 13:46:44 2014 409.0
Thu May 29 13:46:45 2014 296.0
Thu May 29 13:46:46 2014 None
Well matched... good!!!
To aggregate this data to 1 min resolution, run ceres-maintenance rollup.
ceres saves low-resolution data into [email protected] besides
[email protected].
<slicecat [email protected]>
[1401395950] Thu May 29 13:39:10 2014 2958.0
[1401395960] Thu May 29 13:39:20 2014 4036.0
[1401395970] Thu May 29 13:39:30 2014 4049.0
[1401395980] Thu May 29 13:39:40 2014 4155.0
[1401395990] Thu May 29 13:39:50 2014 4138.0
[1401396000] Thu May 29 13:40:00 2014 4144.0
[1401396010] Thu May 29 13:40:10 2014 4144.0
[1401396020] Thu May 29 13:40:20 2014 4023.0
[1401396030] Thu May 29 13:40:30 2014 4049.0
[1401396040] Thu May 29 13:40:40 2014 4156.0
[1401396050] Thu May 29 13:40:50 2014 4163.0
[1401396060] Thu May 29 13:41:00 2014 4174.0
[1401396070] Thu May 29 13:41:10 2014 4156.0
[1401396080] Thu May 29 13:41:20 2014 3924.0
[1401396090] Thu May 29 13:41:30 2014 4159.0
[1401396100] Thu May 29 13:41:40 2014 4165.0
[1401396110] Thu May 29 13:41:50 2014 4171.0
[1401396120] Thu May 29 13:42:00 2014 4161.0
[1401396130] Thu May 29 13:42:10 2014 4169.0
[1401396140] Thu May 29 13:42:20 2014 3932.0
[1401396150] Thu May 29 13:42:30 2014 4157.0
[1401396160] Thu May 29 13:42:40 2014 4167.0
[1401396170] Thu May 29 13:42:50 2014 4141.0
[1401396180] Thu May 29 13:43:00 2014 4147.0
[1401396190] Thu May 29 13:43:10 2014 4100.0
[1401396200] Thu May 29 13:43:20 2014 3857.0
[1401396210] Thu May 29 13:43:30 2014 4144.0
[1401396220] Thu May 29 13:43:40 2014 4138.0
Looks good!
<node-read - Completely wrong!!!>
Thu May 29 13:39:10 2014 2958.0
Thu May 29 13:39:11 2014 4036.0
Thu May 29 13:39:12 2014 4049.0
Thu May 29 13:39:13 2014 4155.0
Thu May 29 13:39:14 2014 4138.0
Thu May 29 13:39:15 2014 4144.0
Thu May 29 13:39:16 2014 4144.0
Thu May 29 13:39:17 2014 4023.0
Thu May 29 13:39:18 2014 4049.0
Thu May 29 13:39:19 2014 4156.0
Thu May 29 13:39:20 2014 4163.0
Thu May 29 13:39:21 2014 4174.0
Thu May 29 13:39:22 2014 4156.0
Thu May 29 13:39:23 2014 3924.0
Thu May 29 13:39:24 2014 4159.0
Thu May 29 13:39:25 2014 4165.0
Thu May 29 13:39:26 2014 4171.0
Thu May 29 13:39:27 2014 4161.0
Thu May 29 13:39:28 2014 4169.0
Thu May 29 13:39:29 2014 3932.0
Thu May 29 13:39:30 2014 4157.0
Thu May 29 13:39:31 2014 4167.0
Thu May 29 13:39:32 2014 4141.0
Thu May 29 13:39:33 2014 4147.0
Thu May 29 13:39:34 2014 4100.0
Thu May 29 13:39:35 2014 3857.0
Thu May 29 13:39:36 2014 4144.0
Thu May 29 13:39:37 2014 4138.0
Thu May 29 13:39:38 2014 21.0
Thu May 29 13:39:39 2014 422.0
Thu May 29 13:39:40 2014 None
Thu May 29 13:39:41 2014 426.0
...
Thu May 29 13:47:08 2014 397.0
Thu May 29 13:47:09 2014 420.0
Thu May 29 13:47:10 2014 415.0
Thu May 29 13:47:11 2014 409.0
Thu May 29 13:47:12 2014 296.0
Thu May 29 13:47:13 2014 None
Thu May 29 13:47:14 2014 None
Thu May 29 13:47:15 2014 None
Thu May 29 13:47:16 2014 None
Thu May 29 13:47:17 2014 None
...
None
...
Thu May 29 13:54:41 2014 None
Thu May 29 13:54:42 2014 None
Thu May 29 13:54:43 2014 None
Thu May 29 13:54:44 2014 None
Thu May 29 13:54:45 2014 None
Looks CeresNode.read merge slices with the wrong timestep value.
Graphite-web would display wrong graph of course.
Anyone experienced this problem?
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