Time-series is definitely not synonymous column-oriented. The data model is separate from the storage layer which is separate from the use-case. You're talking

Time-series is definitely not synonymous column-oriented. The data model is separate from the storage layer which is separate from the use-case. You're talking about relational databases (which is the formal type) designed for large-scale analytics using column-oriented storage and processing and supporting a time-series use-case. Storage and querying just for time-series specifically is more about product features than the underlying type. For example, here's Pinterest doing the same on HBase: https://medium.com/pinterest-engineering/pinalyticsdb-a-time-series-database-on-top-of-hbase-946f236bb29a https://medium.com/pinterest-engineering/pinalyticsdb-a-time...