prometheus/prometheus — pull request #246 by juliusv (2013-05-14 12:01:17+00:00)
Title: Fix and optimize getValuesAtIntervalOp data extraction.

- only the data extracted in the last loop iteration of ExtractSamples() was
emitted as output

- if e.g. op interval < sample interval, there were situations where the same
sample was added multiple times to the output