- Core is in Java - License - not sure? - OpenTSDB used for storing time series, HBase 0.98.8 - Stores extended schema (entities, alerts, state) in another d

- Core is in Java - License - not sure? - OpenTSDB used for storing time series, HBase 0.98.8 - Stores extended schema (entities, alerts, state) in another database (derby, postgres, not sure?). Why not Phoenix. - Namespace concept used for grouping metrics Joins a lineup of internal time series database projects, some of which are OSS now: Netflix Atlas, StackExchange Bosun, Facebook Gorilla.