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[Gavin <question270876@xxxxxxxxxxxxxxxxxxxxx>]

New question #270876 on Graphite:
https://answers.launchpad.net/graphite/+question/270876

I'm seeing a situation within our system were two values sent to graphite (with a timestamp) are split between two different timestamps.

Expected 
  Time T,   A: 1, B: 2

Actual
  Time T,   A: 1, B: -
  Time T+1, A: -, B: 2

Some example log data:

  nonNegativeDerivative(queries_processed_successfully),2014-12-10 19:53:30,296.0
> nonNegativeDerivative(queries_processed_successfully),2014-12-10 19:53:40,

  nonNegativeDerivative(queries_processed),2014-12-10 19:53:30,324.0
> nonNegativeDerivative(queries_processed),2014-12-10 19:53:40,312.0

  asPercent(),2014-12-10 19:53:30,8.641975308641975
> asPercent(),2014-12-10 19:53:40,9231916.666666668

  queries_processed_successfully,2014-12-10 19:53:30,28803268.0
> queries_processed_successfully,2014-12-10 19:53:40,

  queries_processed,2014-12-10 19:53:30,32114876.0
> queries_processed,2014-12-10 19:53:40,32115188.0

Our metrics are inserted into graphite via panoptimon.

Any help on how to diagnose/fix the issue would be greatly appreciated as we've been unable to reproduce this issue consistently.

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