<?xml version="1.0"?> <clickhouse> <!-- How many simualteneous workers are posssible --> <max_workers>3</max_workers> <!-- Common setting for pull and push operations --> <settings> <connect_timeout>1</connect_timeout> </settings> <!-- Setting used to fetch data --> <settings_pull> <max_rows_in_distinct>0</max_rows_in_distinct> </settings_pull> <!-- Setting used to insert data --> <settings_push> </settings_push> <!-- Tasks --> <tables> <hits> <cluster_pull>source_trivial_cluster</cluster_pull> <database_pull>default</database_pull> <table_pull>trivial_without_arguments</table_pull> <cluster_push>destination_trivial_cluster</cluster_push> <database_push>default</database_push> <table_push>trivial_without_arguments</table_push> <!-- Engine of destination tables --> <engine>ENGINE=ReplicatedMergeTree() PARTITION BY d % 5 ORDER BY (d, sipHash64(d)) SAMPLE BY sipHash64(d) SETTINGS index_granularity = 16</engine> <!-- Which sarding key to use while copying --> <sharding_key>d + 1</sharding_key> <!-- Optional expression that filter copying data --> <where_condition>d - d = 0</where_condition> </hits> </tables> <!-- Configuration of clusters --> <remote_servers> <source_trivial_cluster> <shard> <replica> <host>first_trivial</host> <port>9000</port> </replica> </shard> </source_trivial_cluster> <destination_trivial_cluster> <shard> <replica> <host>second_trivial</host> <port>9000</port> </replica> </shard> </destination_trivial_cluster> </remote_servers> </clickhouse>