Features comparison among different kernel versions - ApsaraDB for ClickHouse

The following table describes the features that are supported by different kernel versions of ApsaraDB for ClickHouse. A tick (️️✔️) indicates that a feature is supported, and a cross (❌) indicates that a feature is not supported.

Feature		Version					References
Feature		19.15	20.3	20.8	21.8	22.8	References
Database engine	Real-time synchronization from MySQL databases by using the MaterializeMySQL database engine	❌	❌	✔️	✔️	✔️	MaterializeMySQL
	Data import from MaxCompute by using external tables	✔️	✔️	✔️	✔️	✔️	Use an external table to import data from MaxCompute to ApsaraDB for ClickHouse (V 19.15.2.2) Use an external table to import data from MaxCompute to ApsaraDB for ClickHouse (V20.3 or later)
	Data import from Object Storage Service (OSS) by using external tables	✔️	✔️	✔️	✔️	✔️	Import data from OSS
O&M	Cluster parameter settings	✔️	✔️	✔️	✔️	✔️	Set parameters in the config.xml file
	Query management	✔️	✔️	✔️	✔️	✔️	Manage queries
	Account management	✔️	✔️	✔️	✔️	✔️	Account management
	Cluster restart	✔️	✔️	✔️	✔️	✔️	Restart an ApsaraDB for ClickHouse cluster
	Scale-out and scale-in	✔️	✔️	✔️	✔️	✔️	Modify the configurations of an ApsaraDB for ClickHouse cluster
	Scale-up and scale-down	✔️	✔️	✔️	✔️	✔️
	Data backup and data restoration	❌	❌	❌	✔️	✔️	Data backup
	Monitoring and alerting	✔️	✔️	✔️	✔️	✔️	Monitoring and alerting
	Update of the minor engine version	❌	❌	❌	✔️	✔️	Update the minor engine version
	Tiered storage of hot data and cold data	❌	❌	✔️	✔️	✔️	Tiered storage of hot data and cold data
	Data migration between ApsaraDB for ClickHouse clusters Note Version limits of this feature are imposed only on the destination cluster.	❌	❌	✔️	✔️	✔️	Migrate data between ApsaraDB for ClickHouse clusters
	Data security	✔️	✔️	✔️	✔️	✔️	Security management