Not to steal limelight from OpenTSDB - it's great in many ways - if anyone is interested in experimenting with TSDBs, we've been developing HBase-based Axibase

Not to steal limelight from OpenTSDB - it's great in many ways - if anyone is interested in experimenting with TSDBs, we've been developing HBase-based Axibase Time Series Database for 3+ years: https://axibase.com/products/axibase-time-series-database https://axibase.com/products/axibase-time-series-database. It supports SQL and is somewhat better packaged with built-in rule engine for alerting and visualization: example - http://apps.axibase.com/chartlab/2ef08f32 http://apps.axibase.com/chartlab/2ef08f32. Accepts most line protocols including nmon, tcollector, scollector (works for windows, often overlooked), collectd, statsd. Disclosure: I work for Axibase.