import pytest from helpers.cluster import ClickHouseCluster cluster = ClickHouseCluster(__file__) node1 = cluster.add_instance('node1', with_zookeeper=True) node2 = cluster.add_instance('node2', with_zookeeper=True) @pytest.fixture(scope="module") def started_cluster(): try: cluster.start() for node in [node1, node2]: node.query(''' CREATE TABLE replicated_mt(date Date, id UInt32, value Int32) ENGINE = ReplicatedMergeTree('/clickhouse/tables/replicated_mt', '{replica}') PARTITION BY toYYYYMM(date) ORDER BY id; '''.format(replica=node.name)) node1.query(''' CREATE TABLE non_replicated_mt(date Date, id UInt32, value Int32) ENGINE = MergeTree() PARTITION BY toYYYYMM(date) ORDER BY id SETTINGS min_bytes_for_wide_part=0; ''') yield cluster finally: cluster.shutdown() def corrupt_data_part_on_disk(node, table, part_name): part_path = node.query( "SELECT path FROM system.parts WHERE table = '{}' and name = '{}'".format(table, part_name)).strip() node.exec_in_container(['bash', '-c', 'cd {p} && ls *.bin | head -n 1 | xargs -I{{}} sh -c \'echo "1" >> $1\' -- {{}}'.format( p=part_path)], privileged=True) def remove_checksums_on_disk(node, table, part_name): part_path = node.query( "SELECT path FROM system.parts WHERE table = '{}' and name = '{}'".format(table, part_name)).strip() node.exec_in_container(['bash', '-c', 'rm -r {p}/checksums.txt'.format(p=part_path)], privileged=True) def remove_part_from_disk(node, table, part_name): part_path = node.query( "SELECT path FROM system.parts WHERE table = '{}' and name = '{}'".format(table, part_name)).strip() if not part_path: raise Exception("Part " + part_name + "doesn't exist") node.exec_in_container(['bash', '-c', 'rm -r {p}/*'.format(p=part_path)], privileged=True) def test_check_normal_table_corruption(started_cluster): node1.query("INSERT INTO non_replicated_mt VALUES (toDate('2019-02-01'), 1, 10), (toDate('2019-02-01'), 2, 12)") assert node1.query("CHECK TABLE non_replicated_mt PARTITION 201902", settings={"check_query_single_value_result": 0}) == "201902_1_1_0\t1\t\n" remove_checksums_on_disk(node1, "non_replicated_mt", "201902_1_1_0") assert node1.query("CHECK TABLE non_replicated_mt", settings={ "check_query_single_value_result": 0}).strip() == "201902_1_1_0\t1\tChecksums recounted and written to disk." assert node1.query("SELECT COUNT() FROM non_replicated_mt") == "2\n" remove_checksums_on_disk(node1, "non_replicated_mt", "201902_1_1_0") assert node1.query("CHECK TABLE non_replicated_mt PARTITION 201902", settings={ "check_query_single_value_result": 0}).strip() == "201902_1_1_0\t1\tChecksums recounted and written to disk." assert node1.query("SELECT COUNT() FROM non_replicated_mt") == "2\n" corrupt_data_part_on_disk(node1, "non_replicated_mt", "201902_1_1_0") assert node1.query("CHECK TABLE non_replicated_mt", settings={ "check_query_single_value_result": 0}).strip() == "201902_1_1_0\t0\tCannot read all data. Bytes read: 2. Bytes expected: 16." assert node1.query("CHECK TABLE non_replicated_mt", settings={ "check_query_single_value_result": 0}).strip() == "201902_1_1_0\t0\tCannot read all data. Bytes read: 2. Bytes expected: 16." node1.query("INSERT INTO non_replicated_mt VALUES (toDate('2019-01-01'), 1, 10), (toDate('2019-01-01'), 2, 12)") assert node1.query("CHECK TABLE non_replicated_mt PARTITION 201901", settings={"check_query_single_value_result": 0}) == "201901_2_2_0\t1\t\n" corrupt_data_part_on_disk(node1, "non_replicated_mt", "201901_2_2_0") remove_checksums_on_disk(node1, "non_replicated_mt", "201901_2_2_0") assert node1.query("CHECK TABLE non_replicated_mt PARTITION 201901", settings={ "check_query_single_value_result": 0}) == "201901_2_2_0\t0\tCheck of part finished with error: \\'Cannot read all data. Bytes read: 2. Bytes expected: 16.\\'\n" def test_check_replicated_table_simple(started_cluster): node1.query("TRUNCATE TABLE replicated_mt") node2.query("SYSTEM SYNC REPLICA replicated_mt") node1.query("INSERT INTO replicated_mt VALUES (toDate('2019-02-01'), 1, 10), (toDate('2019-02-01'), 2, 12)") node2.query("SYSTEM SYNC REPLICA replicated_mt") assert node1.query("SELECT count() from replicated_mt") == "2\n" assert node2.query("SELECT count() from replicated_mt") == "2\n" assert node1.query("CHECK TABLE replicated_mt", settings={"check_query_single_value_result": 0}) == "201902_0_0_0\t1\t\n" assert node2.query("CHECK TABLE replicated_mt", settings={"check_query_single_value_result": 0}) == "201902_0_0_0\t1\t\n" node2.query("INSERT INTO replicated_mt VALUES (toDate('2019-01-02'), 3, 10), (toDate('2019-01-02'), 4, 12)") node1.query("SYSTEM SYNC REPLICA replicated_mt") assert node1.query("SELECT count() from replicated_mt") == "4\n" assert node2.query("SELECT count() from replicated_mt") == "4\n" assert node1.query("CHECK TABLE replicated_mt PARTITION 201901", settings={"check_query_single_value_result": 0}) == "201901_0_0_0\t1\t\n" assert node2.query("CHECK TABLE replicated_mt PARTITION 201901", settings={"check_query_single_value_result": 0}) == "201901_0_0_0\t1\t\n" def test_check_replicated_table_corruption(started_cluster): node1.query("TRUNCATE TABLE replicated_mt") node2.query("SYSTEM SYNC REPLICA replicated_mt") node1.query("INSERT INTO replicated_mt VALUES (toDate('2019-02-01'), 1, 10), (toDate('2019-02-01'), 2, 12)") node1.query("INSERT INTO replicated_mt VALUES (toDate('2019-01-02'), 3, 10), (toDate('2019-01-02'), 4, 12)") node2.query("SYSTEM SYNC REPLICA replicated_mt") assert node1.query("SELECT count() from replicated_mt") == "4\n" assert node2.query("SELECT count() from replicated_mt") == "4\n" part_name = node1.query( "SELECT name from system.parts where table = 'replicated_mt' and partition_id = '201901' and active = 1").strip() corrupt_data_part_on_disk(node1, "replicated_mt", part_name) assert node1.query("CHECK TABLE replicated_mt PARTITION 201901", settings={ "check_query_single_value_result": 0}) == "{p}\t0\tPart {p} looks broken. Removing it and queueing a fetch.\n".format( p=part_name) node1.query("SYSTEM SYNC REPLICA replicated_mt") assert node1.query("CHECK TABLE replicated_mt PARTITION 201901", settings={"check_query_single_value_result": 0}) == "{}\t1\t\n".format(part_name) assert node1.query("SELECT count() from replicated_mt") == "4\n" remove_part_from_disk(node2, "replicated_mt", part_name) assert node2.query("CHECK TABLE replicated_mt PARTITION 201901", settings={ "check_query_single_value_result": 0}) == "{p}\t0\tPart {p} looks broken. Removing it and queueing a fetch.\n".format( p=part_name) node1.query("SYSTEM SYNC REPLICA replicated_mt") assert node1.query("CHECK TABLE replicated_mt PARTITION 201901", settings={"check_query_single_value_result": 0}) == "{}\t1\t\n".format(part_name) assert node1.query("SELECT count() from replicated_mt") == "4\n"