Its somewhat unique in the open source category. As a column store engine that supports (hybrid) SQL, manages its own storage and clustering, and has only one

Its somewhat unique in the open source category. As a column store engine that supports (hybrid) SQL, manages its own storage and clustering, and has only one external dependency (Zookeeper), I believe its main competitor is Vertica which can be very expensive. I assume Oracle, IBM, and MS have column stores as well and for a cost. Greenplum is a Postgres fork, and same scale requires much more hardware. Citus is row based, and therefore will lag in scan time for many OLAP query patterns. Presto, Hive, Spark, all of the "post-hadoop" options may scale larger, but will also lag in scan time, and have significant external dependencies - mainly storage. Clickhouse is easy to install, configure a cluster, load and query. It does have limitations, but currently all horizontally scaled database platforms do.