import pytest import helpers.client as client from helpers.cluster import ClickHouseCluster cluster = ClickHouseCluster(__file__) node1 = cluster.add_instance('node1', with_zookeeper=True, image='yandex/clickhouse-server:19.17.8.54', stay_alive=True, with_installed_binary=True) node2 = cluster.add_instance('node2', with_zookeeper=True) @pytest.fixture(scope="module") def start_cluster(): try: cluster.start() for i, node in enumerate([node1, node2]): node.query( '''CREATE TABLE t(date Date, id UInt32) ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/t', '{}') PARTITION BY toYYYYMM(date) ORDER BY id'''.format(i)) yield cluster finally: cluster.shutdown() def test_backward_compatability(start_cluster): node2.query("INSERT INTO t VALUES (today(), 1)") node1.query("SYSTEM SYNC REPLICA t", timeout=10) assert node1.query("SELECT count() FROM t") == "1\n"