Question #228472 on Graphite changed: https://answers.launchpad.net/graphite/+question/228472
Anatoliy Dobrosynets proposed the following answer: Yes, graphite-web fetchData algorythm you described is correct. My only concern was ConsistentHashRing. Is it really that smart to return the same value for a given key, despite the fact it's hash_ring has been generated on differnt base ? I couldn't believe that if DESTINATIONS = ['10.4.0.1:a', '10.4.0.1:b', '10.4.0.2:c', '10.4.0.2:d'] carbon-relay routes metric to any carbon-cache at host-1, and host-1 webapp has CARBONLINK_HOSTS = ['10.4.0.1:a', '10.4.0.1:b'] then this is always True for any metric: ConsistentHashRing(DESTINATIONS).get_host(metric) == ConsistentHashRing(CARBONLINK_HOSTS).get_host(metric) Today I made more tests and got really impressed - https://gist.github.com/anatolijd/5611927 . I don't understand this magic but I've got the evidence of the faith now :) -- You received this question notification because you are a member of graphite-dev, which is an answer contact for Graphite. _______________________________________________ Mailing list: https://launchpad.net/~graphite-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~graphite-dev More help : https://help.launchpad.net/ListHelp
