ADMIN SET CONFIG
ADMIN SET CONFIG is used to set configuration items for the cluster (Currently, only FE dynamic configuration items can be set using this command).
ADMIN SHOW CONFIG
ADMIN SHOW CONFIG displays the configuration of the current cluster (Currently, only FE configuration items can be displayed).
REFRESH CONNECTIONS
Refreshes all active connections to apply global variables that have been changed by `SET GLOBAL`.
SET
Sets the specified system variables or user-defined variables for StarRocks.
SHOW VARIABLES
SHOW VARIABLES shows the system variables of StarRocks.