ClickHouse/tests/integration/test_cluster_copier/task_drop_target_partition.xml

<clickhouse>
<remote_servers>
        <source>
             <shard>
                 <internal_replication>false</internal_replication>
                 <replica>
                     <host>first_of_two</host>
                     <port>9000</port>
                 </replica>
             </shard>
        </source>
        <destination>
             <shard>
                 <internal_replication>false</internal_replication>
                 <replica>
                     <host>second_of_two</host>
                     <port>9000</port>
                 </replica>
             </shard>
        </destination>
    </remote_servers>

   <max_workers>2</max_workers>

   <tables>
     <table_events>
         <cluster_pull>source</cluster_pull>
         <database_pull>db_drop_target_partition</database_pull>
         <table_pull>source</table_pull>

         <cluster_push>destination</cluster_push>
         <database_push>db_drop_target_partition</database_push>
         <table_push>destination</table_push>

         <allow_to_drop_target_partitions>true</allow_to_drop_target_partitions>

         <engine>ENGINE = MergeTree() PARTITION BY toYYYYMMDD(Column3) ORDER BY (Column3, Column2, Column1)</engine>
         <sharding_key>rand()</sharding_key>
     </table_events>
   </tables>
 </clickhouse>