v.20.12Experimental Feature

Add EmbeddedRocksDB Table Engine for Dictionaries

Add EmbeddedRocksDB table engine (can be used for dictionaries). #15073 (sundyli).
Introduces the EmbeddedRocksDB table engine, which integrates RocksDB as an embedded storage engine within ClickHouse tables.

Why it matters

This feature enables the use of RocksDB for storage within ClickHouse, providing an efficient key-value store that can be utilized for implementing dictionaries and other use cases requiring fast lookups and persistent storage.

How to use it

Users can create tables using the EmbeddedRocksDB engine by specifying it in the ENGINE clause of the CREATE TABLE statement. This allows seamless embedding of RocksDB storage for dictionary or other internal key-value use cases.