Carbon is one of the components of Graphite, and is responsible for receiving metrics over the network and writing them down to disk using a storage backend.
I rebased it again, but tests are stubborn. So, looks like more work is needed here. Parking it for now, I'm open for anyone interested to pick it up. Thanks a lot!
See https://github.com/graphite-project/carbon/pull/591
Related to https://github.com/graphite-project/carbon/issues/939