the reorderBuffer is created with NewReorderBuffer(reorderWindow, ret.SecondsPerPoint). where ret is a conf.Retention. Unlike in graphite, the default storageSchemas dont explicitly set the secodsPerPoint of every series. Instead, we map retention policies to a range of metric intervals. We then use the "interval" property sent with each MetricData payload.

With a default config, the secondsPerPoint is set to "1s" and this is what is being passed when creating the reorderBuffer.