import json import random import re import string import threading import time from multiprocessing.dummy import Pool import pytest from helpers.client import QueryRuntimeException from helpers.cluster import ClickHouseCluster cluster = ClickHouseCluster(__file__) node1 = cluster.add_instance( "node1", main_configs=[ "configs/logs_config.xml", "configs/config.d/storage_configuration.xml", "configs/config.d/cluster.xml", ], with_zookeeper=True, stay_alive=True, tmpfs=["/jbod1:size=40M", "/jbod2:size=40M", "/external:size=200M"], macros={"shard": 0, "replica": 1}, ) node2 = cluster.add_instance( "node2", main_configs=[ "configs/logs_config.xml", "configs/config.d/storage_configuration.xml", "configs/config.d/cluster.xml", ], with_zookeeper=True, stay_alive=True, tmpfs=["/jbod1:size=40M", "/jbod2:size=40M", "/external:size=200M"], macros={"shard": 0, "replica": 2}, ) @pytest.fixture(scope="module") def start_cluster(): try: cluster.start() yield cluster finally: cluster.shutdown() def get_oldest_part(node, table_name): return node.query( f"SELECT name FROM system.parts WHERE table = '{table_name}' and active = 1 ORDER BY modification_time LIMIT 1" ).strip() def get_disk_for_part(node, table_name, part): return node.query( f"SELECT disk_name FROM system.parts WHERE table == '{table_name}' and active = 1 and name = '{part}' ORDER BY modification_time" ).strip() def test_system_tables(start_cluster): expected_disks_data = [ { "name": "default", "path": "/var/lib/clickhouse/", "keep_free_space": "1024", }, { "name": "jbod1", "path": "/jbod1/", "keep_free_space": "0", }, { "name": "jbod2", "path": "/jbod2/", "keep_free_space": "10485760", }, { "name": "external", "path": "/external/", "keep_free_space": "0", }, ] click_disk_data = json.loads( node1.query("SELECT name, path, keep_free_space FROM system.disks FORMAT JSON") )["data"] assert sorted(click_disk_data, key=lambda x: x["name"]) == sorted( expected_disks_data, key=lambda x: x["name"] ) expected_policies_data = [ { "policy_name": "small_jbod_with_external", "volume_name": "main", "volume_priority": "1", "disks": ["jbod1"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "small_jbod_with_external", "volume_name": "external", "volume_priority": "2", "disks": ["external"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "small_jbod_with_external_no_merges", "volume_name": "main", "volume_priority": "1", "disks": ["jbod1"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "small_jbod_with_external_no_merges", "volume_name": "external", "volume_priority": "2", "disks": ["external"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 1, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "one_more_small_jbod_with_external", "volume_name": "m", "volume_priority": "1", "disks": ["jbod1"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "one_more_small_jbod_with_external", "volume_name": "e", "volume_priority": "2", "disks": ["external"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "jbods_with_external", "volume_name": "main", "volume_priority": "1", "disks": ["jbod1", "jbod2"], "volume_type": "JBOD", "max_data_part_size": "10485760", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "jbods_with_external", "volume_name": "external", "volume_priority": "2", "disks": ["external"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "moving_jbod_with_external", "volume_name": "main", "volume_priority": "1", "disks": ["jbod1"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.7, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "moving_jbod_with_external", "volume_name": "external", "volume_priority": "2", "disks": ["external"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.7, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "default_disk_with_external", "volume_name": "small", "volume_priority": "1", "disks": ["default"], "volume_type": "JBOD", "max_data_part_size": "2097152", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "default_disk_with_external", "volume_name": "big", "volume_priority": "2", "disks": ["external"], "volume_type": "JBOD", "max_data_part_size": "20971520", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "special_warning_policy", "volume_name": "special_warning_zero_volume", "volume_priority": "1", "disks": ["default"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "special_warning_policy", "volume_name": "special_warning_default_volume", "volume_priority": "2", "disks": ["external"], "volume_type": "JBOD", "max_data_part_size": "0", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "special_warning_policy", "volume_name": "special_warning_small_volume", "volume_priority": "3", "disks": ["jbod1"], "volume_type": "JBOD", "max_data_part_size": "1024", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, { "policy_name": "special_warning_policy", "volume_name": "special_warning_big_volume", "volume_priority": "4", "disks": ["jbod2"], "volume_type": "JBOD", "max_data_part_size": "1024000000", "move_factor": 0.1, "prefer_not_to_merge": 0, "perform_ttl_move_on_insert": 1, "load_balancing": "ROUND_ROBIN", }, ] clickhouse_policies_data = json.loads( node1.query( "SELECT * FROM system.storage_policies WHERE policy_name != 'default' FORMAT JSON" ) )["data"] def key(x): return (x["policy_name"], x["volume_name"], x["volume_priority"]) assert sorted(clickhouse_policies_data, key=key) == sorted( expected_policies_data, key=key ) def test_query_parser(start_cluster): try: with pytest.raises(QueryRuntimeException): node1.query( """ CREATE TABLE IF NOT EXISTS table_with_absent_policy ( d UInt64 ) ENGINE = MergeTree() ORDER BY d SETTINGS storage_policy='very_exciting_policy' """ ) with pytest.raises(QueryRuntimeException): node1.query( """ CREATE TABLE IF NOT EXISTS table_with_absent_policy ( d UInt64 ) ENGINE = MergeTree() ORDER BY d SETTINGS storage_policy='jbod1' """ ) node1.query( """ CREATE TABLE IF NOT EXISTS table_with_normal_policy ( d UInt64 ) ENGINE = MergeTree() ORDER BY d SETTINGS storage_policy='default' """ ) node1.query("INSERT INTO table_with_normal_policy VALUES (5)") with pytest.raises(QueryRuntimeException): node1.query( "ALTER TABLE table_with_normal_policy MOVE PARTITION tuple() TO VOLUME 'some_volume'" ) with pytest.raises(QueryRuntimeException): node1.query( "ALTER TABLE table_with_normal_policy MOVE PARTITION tuple() TO DISK 'some_volume'" ) with pytest.raises(QueryRuntimeException): node1.query( "ALTER TABLE table_with_normal_policy MOVE PART 'xxxxx' TO DISK 'jbod1'" ) with pytest.raises(QueryRuntimeException): node1.query( "ALTER TABLE table_with_normal_policy MOVE PARTITION 'yyyy' TO DISK 'jbod1'" ) with pytest.raises(QueryRuntimeException): node1.query( "ALTER TABLE table_with_normal_policy MODIFY SETTING storage_policy='moving_jbod_with_external'" ) finally: node1.query("DROP TABLE IF EXISTS table_with_normal_policy SYNC") @pytest.mark.parametrize( "name,engine", [ pytest.param("test_alter_policy", "MergeTree()", id="mt"), pytest.param( "replicated_test_alter_policy", "ReplicatedMergeTree('/clickhouse/test_alter_policy', '1')", id="replicated", ), ], ) def test_alter_policy(start_cluster, name, engine): try: node1.query_with_retry( """ CREATE TABLE IF NOT EXISTS {name} ( d UInt64 ) ENGINE = {engine} ORDER BY d SETTINGS storage_policy='small_jbod_with_external' """.format( name=name, engine=engine ) ) assert ( node1.query( """SELECT storage_policy FROM system.tables WHERE name = '{name}'""".format( name=name ) ) == "small_jbod_with_external\n" ) with pytest.raises(QueryRuntimeException): node1.query( """ALTER TABLE {name} MODIFY SETTING storage_policy='one_more_small_jbod_with_external'""".format( name=name ) ) assert ( node1.query( """SELECT storage_policy FROM system.tables WHERE name = '{name}'""".format( name=name ) ) == "small_jbod_with_external\n" ) node1.query_with_retry( """ALTER TABLE {name} MODIFY SETTING storage_policy='jbods_with_external'""".format( name=name ) ) assert ( node1.query( """SELECT storage_policy FROM system.tables WHERE name = '{name}'""".format( name=name ) ) == "jbods_with_external\n" ) with pytest.raises(QueryRuntimeException): node1.query( """ALTER TABLE {name} MODIFY SETTING storage_policy='small_jbod_with_external'""".format( name=name ) ) assert ( node1.query( """SELECT storage_policy FROM system.tables WHERE name = '{name}'""".format( name=name ) ) == "jbods_with_external\n" ) finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") def get_random_string(length): return "randomPrintableASCII({})".format(length) def get_used_disks_for_table(node, table_name): return tuple( node.query( "select disk_name from system.parts where table == '{}' and active=1 order by modification_time".format( table_name ) ) .strip() .split("\n") ) def get_used_parts_for_table(node, table_name): return node.query( "SELECT name FROM system.parts WHERE table = '{}' AND active = 1 ORDER BY modification_time".format( table_name ) ).splitlines() def test_no_warning_about_zero_max_data_part_size(start_cluster): def get_log(node): return node.exec_in_container( ["bash", "-c", "cat /var/log/clickhouse-server/clickhouse-server.log"] ) for node in (node1, node2): node.query( """ CREATE TABLE IF NOT EXISTS default.test_warning_table ( s String ) ENGINE = MergeTree ORDER BY tuple() SETTINGS storage_policy='small_jbod_with_external' """ ) node.query("DROP TABLE IF EXISTS default.test_warning_table SYNC") log = get_log(node) assert not re.search("Warning.*Volume.*special_warning_zero_volume", log) assert not re.search("Warning.*Volume.*special_warning_default_volume", log) assert re.search("Warning.*Volume.*special_warning_small_volume", log) assert not re.search("Warning.*Volume.*special_warning_big_volume", log) @pytest.mark.parametrize( "name,engine", [ pytest.param("mt_on_jbod", "MergeTree()", id="mt"), pytest.param( "replicated_mt_on_jbod", "ReplicatedMergeTree('/clickhouse/replicated_mt_on_jbod', '1')", id="replicated", ), ], ) def test_round_robin(start_cluster, name, engine): try: node1.query_with_retry( """ CREATE TABLE IF NOT EXISTS {name} ( d UInt64 ) ENGINE = {engine} ORDER BY d SETTINGS storage_policy='jbods_with_external' """.format( name=name, engine=engine ) ) # first should go to the jbod1 node1.query_with_retry( "insert into {} select * from numbers(10000)".format(name) ) used_disk = get_used_disks_for_table(node1, name) assert len(used_disk) == 1, "More than one disk used for single insert" # sleep is required because we order disks by their modification time, and if insert will be fast # modification time of two disks will be equal, then sort will not provide deterministic results time.sleep(5) node1.query_with_retry( "insert into {} select * from numbers(10000, 10000)".format(name) ) used_disks = get_used_disks_for_table(node1, name) assert len(used_disks) == 2, "Two disks should be used for two parts" assert used_disks[0] != used_disks[1], "Should write to different disks" time.sleep(5) node1.query_with_retry( "insert into {} select * from numbers(20000, 10000)".format(name) ) used_disks = get_used_disks_for_table(node1, name) # jbod1 -> jbod2 -> jbod1 -> jbod2 ... etc assert len(used_disks) == 3 assert used_disks[0] != used_disks[1] assert used_disks[2] == used_disks[0] finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") @pytest.mark.parametrize( "name,engine", [ pytest.param("mt_with_huge_part", "MergeTree()", id="mt"), pytest.param( "replicated_mt_with_huge_part", "ReplicatedMergeTree('/clickhouse/replicated_mt_with_huge_part', '1')", id="replicated", ), ], ) def test_max_data_part_size(start_cluster, name, engine): try: assert ( int( *node1.query( """SELECT max_data_part_size FROM system.storage_policies WHERE policy_name = 'jbods_with_external' AND volume_name = 'main'""" ).splitlines() ) == 10 * 1024 * 1024 ) node1.query_with_retry( """ CREATE TABLE IF NOT EXISTS {name} ( s1 String ) ENGINE = {engine} ORDER BY tuple() SETTINGS storage_policy='jbods_with_external' """.format( name=name, engine=engine ) ) data = [] # 10MB in total for i in range(10): data.append(get_random_string(1024 * 1024)) # 1MB row node1.query_with_retry( "INSERT INTO {} VALUES {}".format( name, ",".join(["(" + x + ")" for x in data]) ) ) used_disks = get_used_disks_for_table(node1, name) assert len(used_disks) == 1 assert used_disks[0] == "external" finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") @pytest.mark.parametrize( "name,engine", [ pytest.param("mt_with_overflow", "MergeTree()", id="mt"), pytest.param( "replicated_mt_with_overflow", "ReplicatedMergeTree('/clickhouse/replicated_mt_with_overflow', '1')", id="replicated", ), ], ) def test_jbod_overflow(start_cluster, name, engine): try: node1.query_with_retry( """ CREATE TABLE IF NOT EXISTS {name} ( s1 String ) ENGINE = {engine} ORDER BY tuple() SETTINGS storage_policy='small_jbod_with_external' """.format( name=name, engine=engine ) ) node1.query(f"SYSTEM STOP MERGES {name}") # The test tries to utilize 35/40=87.5% of space, while during last # INSERT parts mover may see up to ~100% of used space on disk due to # reservations (since INSERT first reserves the space and later write # the same, more or less, amount of space, and util the reservation had # been destroyed it will be taken into account as reserved on the # disk). node1.query(f"SYSTEM STOP MOVES {name}") # small jbod size is 40MB, so lets insert 5MB batch 7 times for i in range(7): data = [] # 5MB in total for i in range(5): data.append(get_random_string(1024 * 1024)) # 1MB row node1.query_with_retry( "INSERT INTO {} VALUES {}".format( name, ",".join(["(" + x + ")" for x in data]) ) ) used_disks = get_used_disks_for_table(node1, name) assert used_disks == tuple("jbod1" for _ in used_disks) # should go to the external disk (jbod is overflown) data = [] # 10MB in total for i in range(10): data.append(get_random_string(1024 * 1024)) # 1MB row node1.query_with_retry( "INSERT INTO {} VALUES {}".format( name, ",".join(["(" + x + ")" for x in data]) ) ) used_disks = get_used_disks_for_table(node1, name) assert used_disks[-1] == "external" node1.query(f"SYSTEM START MERGES {name}") node1.query(f"SYSTEM START MOVES {name}") time.sleep(1) node1.query_with_retry("OPTIMIZE TABLE {} FINAL".format(name)) time.sleep(2) disks_for_merges = tuple( node1.query( "SELECT disk_name FROM system.parts WHERE table == '{}' AND level >= 1 and active = 1 ORDER BY modification_time".format( name ) ) .strip() .split("\n") ) assert disks_for_merges == tuple("external" for _ in disks_for_merges) finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") @pytest.mark.parametrize( "name,engine", [ pytest.param("moving_mt", "MergeTree()", id="mt"), pytest.param( "moving_replicated_mt", "ReplicatedMergeTree('/clickhouse/moving_replicated_mt', '1')", id="replicated", ), ], ) def test_background_move(start_cluster, name, engine): try: node1.query_with_retry( f""" CREATE TABLE IF NOT EXISTS {name} ( s1 String ) ENGINE = {engine} ORDER BY tuple() SETTINGS storage_policy='moving_jbod_with_external', max_replicated_merges_in_queue=0 """ ) node1.query(f"SYSTEM STOP MERGES {name}") first_part = None for i in range(5): data = [] # 5MB in total for _ in range(5): data.append(get_random_string(1024 * 1024)) # 1MB row # small jbod size is 40MB, so lets insert 5MB batch 5 times node1.query_with_retry( "INSERT INTO {} VALUES {}".format( name, ",".join(["(" + x + ")" for x in data]) ) ) # we are doing moves in parallel so we need to fetch the name of first part before we add new parts if i == 0: first_part = get_oldest_part(node1, name) assert first_part is not None retry = 20 i = 0 # multiple moves can be assigned in parallel so we can move later parts before the oldest # we need to wait explicitly until the oldest part is moved while get_disk_for_part(node1, name, first_part) != "external" and i < retry: time.sleep(0.5) i += 1 # first (oldest) part was moved to external assert get_disk_for_part(node1, name, first_part) == "external" node1.query("SYSTEM FLUSH LOGS") path = node1.query( f"SELECT path_on_disk FROM system.part_log WHERE table = '{name}' AND event_type='MovePart' AND part_name = '{first_part}'" ) # first (oldest) part was moved to external assert path.startswith("/external") node1.query(f"SYSTEM START MERGES {name}") finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") @pytest.mark.parametrize( "name,engine", [ pytest.param("stopped_moving_mt", "MergeTree()", id="mt"), pytest.param( "stopped_moving_replicated_mt", "ReplicatedMergeTree('/clickhouse/stopped_moving_replicated_mt', '1')", id="replicated", ), ], ) def test_start_stop_moves(start_cluster, name, engine): try: node1.query_with_retry( f""" CREATE TABLE IF NOT EXISTS {name} ( s1 String ) ENGINE = {engine} ORDER BY tuple() SETTINGS storage_policy='moving_jbod_with_external', max_replicated_merges_in_queue=0 """ ) node1.query_with_retry(f"INSERT INTO {name} VALUES ('HELLO')") node1.query_with_retry(f"INSERT INTO {name} VALUES ('WORLD')") used_disks = get_used_disks_for_table(node1, name) assert all(d == "jbod1" for d in used_disks), "All writes shoud go to jbods" first_part = get_oldest_part(node1, name) node1.query("SYSTEM STOP MOVES") with pytest.raises(QueryRuntimeException): node1.query( f"ALTER TABLE {name} MOVE PART '{first_part}' TO VOLUME 'external'" ) used_disks = get_used_disks_for_table(node1, name) assert all( d == "jbod1" for d in used_disks ), "Blocked moves doesn't actually move something" node1.query("SYSTEM START MOVES") node1.query(f"ALTER TABLE {name} MOVE PART '{first_part}' TO VOLUME 'external'") disk = node1.query( f"SELECT disk_name FROM system.parts WHERE table = '{name}' and name = '{first_part}' and active = 1" ).strip() assert disk == "external" node1.query_with_retry(f"TRUNCATE TABLE {name}") node1.query(f"SYSTEM STOP MOVES {name}") node1.query(f"SYSTEM STOP MERGES {name}") first_part = None for i in range(5): data = [] # 5MB in total for _ in range(5): data.append(get_random_string(1024 * 1024)) # 1MB row # jbod size is 40MB, so lets insert 5MB batch 7 times node1.query_with_retry( "INSERT INTO {} VALUES {}".format( name, ",".join(["(" + x + ")" for x in data]) ) ) # we cannot rely simply on modification time of part because it can be changed # by different background operations so we explicitly check after the first # part is inserted if i == 0: first_part = get_oldest_part(node1, name) assert first_part is not None used_disks = get_used_disks_for_table(node1, name) retry = 5 i = 0 while not sum(1 for x in used_disks if x == "jbod1") <= 2 and i < retry: time.sleep(0.1) used_disks = get_used_disks_for_table(node1, name) i += 1 # first (oldest) part doesn't move anywhere assert used_disks[0] == "jbod1" node1.query(f"SYSTEM START MOVES {name}") # multiple moves can be assigned in parallel so we can move later parts before the oldest # we need to wait explicitly until the oldest part is moved retry = 60 i = 0 while get_disk_for_part(node1, name, first_part) != "external" and i < retry: time.sleep(1) i += 1 # first (oldest) part moved to external assert get_disk_for_part(node1, name, first_part) == "external" node1.query(f"SYSTEM START MERGES {name}") finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") def get_path_for_part_from_part_log(node, table, part_name): node.query("SYSTEM FLUSH LOGS") path = node.query( "SELECT path_on_disk FROM system.part_log WHERE table = '{}' and part_name = '{}' ORDER BY event_time DESC LIMIT 1".format( table, part_name ) ) return path.strip() def get_paths_for_partition_from_part_log(node, table, partition_id): node.query("SYSTEM FLUSH LOGS") paths = node.query( "SELECT path_on_disk FROM system.part_log WHERE table = '{}' and partition_id = '{}' ORDER BY event_time DESC".format( table, partition_id ) ) return paths.strip().split("\n") @pytest.mark.parametrize( "name,engine", [ pytest.param("altering_mt", "MergeTree()", id="mt"), ], ) def test_alter_move(start_cluster, name, engine): try: node1.query( """ CREATE TABLE IF NOT EXISTS {name} ( EventDate Date, number UInt64 ) ENGINE = {engine} ORDER BY tuple() PARTITION BY toYYYYMM(EventDate) SETTINGS storage_policy='jbods_with_external' """.format( name=name, engine=engine ) ) node1.query("SYSTEM STOP MERGES {}".format(name)) # to avoid conflicts node1.query("INSERT INTO {} VALUES(toDate('2019-03-15'), 65)".format(name)) node1.query("INSERT INTO {} VALUES(toDate('2019-03-16'), 66)".format(name)) node1.query("INSERT INTO {} VALUES(toDate('2019-04-10'), 42)".format(name)) node1.query("INSERT INTO {} VALUES(toDate('2019-04-11'), 43)".format(name)) assert node1.query("CHECK TABLE " + name) == "1\n" used_disks = get_used_disks_for_table(node1, name) assert all( d.startswith("jbod") for d in used_disks ), "All writes should go to jbods" first_part = node1.query( "SELECT name FROM system.parts WHERE table = '{}' and active = 1 ORDER BY modification_time LIMIT 1".format( name ) ).strip() time.sleep(1) node1.query( "ALTER TABLE {} MOVE PART '{}' TO VOLUME 'external'".format( name, first_part ) ) assert node1.query("CHECK TABLE " + name) == "1\n" disk = node1.query( "SELECT disk_name FROM system.parts WHERE table = '{}' and name = '{}' and active = 1".format( name, first_part ) ).strip() assert disk == "external" assert get_path_for_part_from_part_log(node1, name, first_part).startswith( "/external" ) time.sleep(1) node1.query( "ALTER TABLE {} MOVE PART '{}' TO DISK 'jbod1'".format(name, first_part) ) assert node1.query("CHECK TABLE " + name) == "1\n" disk = node1.query( "SELECT disk_name FROM system.parts WHERE table = '{}' and name = '{}' and active = 1".format( name, first_part ) ).strip() assert disk == "jbod1" assert get_path_for_part_from_part_log(node1, name, first_part).startswith( "/jbod1" ) time.sleep(1) node1.query( "ALTER TABLE {} MOVE PARTITION 201904 TO VOLUME 'external'".format(name) ) assert node1.query("CHECK TABLE " + name) == "1\n" disks = ( node1.query( "SELECT disk_name FROM system.parts WHERE table = '{}' and partition = '201904' and active = 1".format( name ) ) .strip() .split("\n") ) assert len(disks) == 2 assert all(d == "external" for d in disks) assert all( path.startswith("/external") for path in get_paths_for_partition_from_part_log(node1, name, "201904")[:2] ) time.sleep(1) node1.query("ALTER TABLE {} MOVE PARTITION 201904 TO DISK 'jbod2'".format(name)) assert node1.query("CHECK TABLE " + name) == "1\n" disks = ( node1.query( "SELECT disk_name FROM system.parts WHERE table = '{}' and partition = '201904' and active = 1".format( name ) ) .strip() .split("\n") ) assert len(disks) == 2 assert all(d == "jbod2" for d in disks) assert all( path.startswith("/jbod2") for path in get_paths_for_partition_from_part_log(node1, name, "201904")[:2] ) assert node1.query("SELECT COUNT() FROM {}".format(name)) == "4\n" finally: node1.query(f"DROP TABLE IF EXISTS {name} SYNC") @pytest.mark.parametrize("volume_or_disk", ["DISK", "VOLUME"]) def test_alter_move_half_of_partition(start_cluster, volume_or_disk): name = "alter_move_half_of_partition" engine = "MergeTree()" try: node1.query( """ CREATE TABLE IF NOT EXISTS {name} ( EventDate Date, number UInt64 ) ENGINE = {engine} ORDER BY tuple() PARTITION BY toYYYYMM(EventDate) SETTINGS storage_policy='jbods_with_external' """.format( name=name, engine=engine ) ) node1.query("SYSTEM STOP MERGES {}".format(name)) node1.query("INSERT INTO {} VALUES(toDate('2019-03-15'), 65)".format(name)) node1.query("INSERT INTO {} VALUES(toDate('2019-03-16'), 42)".format(name)) used_disks = get_used_disks_for_table(node1, name) assert all( d.startswith("jbod") for d in used_disks ), "All writes should go to jbods" time.sleep(1) parts = node1.query( "SELECT name FROM system.parts WHERE table = '{}' and active = 1".format( name ) ).splitlines() assert len(parts) == 2 node1.query( "ALTER TABLE {} MOVE PART '{}' TO VOLUME 'external'".format(name, parts[0]) ) disks = node1.query( "SELECT disk_name FROM system.parts WHERE table = '{}' and name = '{}' and active = 1".format( name, parts[0] ) ).splitlines() assert disks == ["external"] time.sleep(1) node1.query( "ALTER TABLE {} MOVE PARTITION 201903 TO {volume_or_disk} 'external'".format( name, volume_or_disk=volume_or_disk ) ) disks = node1.query( "SELECT disk_name FROM system.parts WHERE table = '{}' and partition = '201903' and active = 1".format( name ) ).splitlines() assert disks == ["external"] * 2 assert node1.query("SELECT COUNT() FROM {}".format(name)) == "2\n" finally: node1.query(f"DROP TABLE IF EXISTS {name} SYNC") @pytest.mark.parametrize("volume_or_disk", ["DISK", "VOLUME"]) def test_alter_double_move_partition(start_cluster, volume_or_disk): name = "alter_double_move_partition" engine = "MergeTree()" try: node1.query( """ CREATE TABLE IF NOT EXISTS {name} ( EventDate Date, number UInt64 ) ENGINE = {engine} ORDER BY tuple() PARTITION BY toYYYYMM(EventDate) SETTINGS storage_policy='jbods_with_external' """.format( name=name, engine=engine ) ) node1.query("SYSTEM STOP MERGES {}".format(name)) node1.query("INSERT INTO {} VALUES(toDate('2019-03-15'), 65)".format(name)) node1.query("INSERT INTO {} VALUES(toDate('2019-03-16'), 42)".format(name)) used_disks = get_used_disks_for_table(node1, name) assert all( d.startswith("jbod") for d in used_disks ), "All writes should go to jbods" time.sleep(1) node1.query( "ALTER TABLE {} MOVE PARTITION 201903 TO {volume_or_disk} 'external'".format( name, volume_or_disk=volume_or_disk ) ) disks = node1.query( "SELECT disk_name FROM system.parts WHERE table = '{}' and partition = '201903' and active = 1".format( name ) ).splitlines() assert disks == ["external"] * 2 assert node1.query("SELECT COUNT() FROM {}".format(name)) == "2\n" time.sleep(1) with pytest.raises(QueryRuntimeException): node1.query( "ALTER TABLE {} MOVE PARTITION 201903 TO {volume_or_disk} 'external'".format( name, volume_or_disk=volume_or_disk ) ) finally: node1.query(f"DROP TABLE IF EXISTS {name} SYNC") def produce_alter_move(node, name): move_type = random.choice(["PART", "PARTITION"]) if move_type == "PART": for _ in range(10): try: parts = ( node1.query( "SELECT name from system.parts where table = '{}' and active = 1".format( name ) ) .strip() .split("\n") ) break except QueryRuntimeException: pass else: raise Exception("Cannot select from system.parts") move_part = random.choice(["'" + part + "'" for part in parts]) else: move_part = random.choice([201903, 201904]) move_disk = random.choice(["DISK", "VOLUME"]) if move_disk == "DISK": move_volume = random.choice(["'external'", "'jbod1'", "'jbod2'"]) else: move_volume = random.choice(["'main'", "'external'"]) try: node1.query( "ALTER TABLE {} MOVE {mt} {mp} TO {md} {mv}".format( name, mt=move_type, mp=move_part, md=move_disk, mv=move_volume ) ) except QueryRuntimeException as ex: pass @pytest.mark.parametrize( "name,engine", [ pytest.param("detach_attach_mt", "MergeTree()", id="mt"), pytest.param( "replicated_detach_attach_mt", "ReplicatedMergeTree('/clickhouse/replicated_detach_attach_mt', '1')", id="replicated", ), ], ) def test_detach_attach(start_cluster, name, engine): try: node1.query_with_retry( """ CREATE TABLE IF NOT EXISTS {name} ( s1 String ) ENGINE = {engine} ORDER BY tuple() SETTINGS storage_policy='moving_jbod_with_external' """.format( name=name, engine=engine ) ) data = [] # 5MB in total for i in range(5): data.append(get_random_string(1024 * 1024)) # 1MB row node1.query_with_retry( "INSERT INTO {} VALUES {}".format( name, ",".join(["(" + x + ")" for x in data]) ) ) node1.query("ALTER TABLE {} DETACH PARTITION tuple()".format(name)) assert node1.query("SELECT count() FROM {}".format(name)).strip() == "0" assert ( node1.query( "SELECT disk FROM system.detached_parts WHERE table = '{}'".format(name) ).strip() == "jbod1" ) node1.query("ALTER TABLE {} ATTACH PARTITION tuple()".format(name)) assert node1.query("SELECT count() FROM {}".format(name)).strip() == "5" finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") @pytest.mark.parametrize( "name,engine", [ pytest.param("mutating_mt", "MergeTree()", id="mt"), pytest.param( "replicated_mutating_mt", "ReplicatedMergeTree('/clickhouse/replicated_mutating_mt', '1')", id="replicated", ), ], ) def test_mutate_to_another_disk(start_cluster, name, engine): try: node1.query_with_retry( """ CREATE TABLE IF NOT EXISTS {name} ( s1 String ) ENGINE = {engine} ORDER BY tuple() SETTINGS storage_policy='moving_jbod_with_external' """.format( name=name, engine=engine ) ) for i in range(5): data = [] # 5MB in total for i in range(5): data.append(get_random_string(1024 * 1024)) # 1MB row node1.query_with_retry( "INSERT INTO {} VALUES {}".format( name, ",".join(["(" + x + ")" for x in data]) ) ) node1.query("ALTER TABLE {} UPDATE s1 = concat(s1, 'x') WHERE 1".format(name)) retry = 20 while ( node1.query("SELECT * FROM system.mutations WHERE is_done = 0") != "" and retry > 0 ): retry -= 1 time.sleep(0.5) if ( node1.query( "SELECT latest_fail_reason FROM system.mutations WHERE table = '{}'".format( name ) ) == "" ): assert ( node1.query("SELECT sum(endsWith(s1, 'x')) FROM {}".format(name)) == "25\n" ) else: # mutation failed, let's try on another disk print("Mutation failed") node1.query_with_retry("OPTIMIZE TABLE {} FINAL".format(name)) node1.query( "ALTER TABLE {} UPDATE s1 = concat(s1, 'x') WHERE 1".format(name) ) retry = 20 while ( node1.query("SELECT * FROM system.mutations WHERE is_done = 0") != "" and retry > 0 ): retry -= 1 time.sleep(0.5) assert ( node1.query("SELECT sum(endsWith(s1, 'x')) FROM {}".format(name)) == "25\n" ) finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") @pytest.mark.parametrize( "name,engine", [ pytest.param("alter_modifying_mt", "MergeTree()", id="mt"), pytest.param( "replicated_alter_modifying_mt", "ReplicatedMergeTree('/clickhouse/replicated_alter_modifying_mt', '1')", id="replicated", ), ], ) def test_concurrent_alter_modify(start_cluster, name, engine): try: node1.query_with_retry( """ CREATE TABLE IF NOT EXISTS {name} ( EventDate Date, number UInt64 ) ENGINE = {engine} ORDER BY tuple() PARTITION BY toYYYYMM(EventDate) SETTINGS storage_policy='jbods_with_external' """.format( name=name, engine=engine ) ) values = list({random.randint(1, 1000000) for _ in range(0, 1000)}) def insert(num): for i in range(num): day = random.randint(11, 30) value = values.pop() month = "0" + str(random.choice([3, 4])) node1.query_with_retry( "INSERT INTO {} VALUES(toDate('2019-{m}-{d}'), {v})".format( name, m=month, d=day, v=value ) ) def alter_move(num): for i in range(num): produce_alter_move(node1, name) def alter_modify(num): for i in range(num): column_type = random.choice(["UInt64", "String"]) try: node1.query( "ALTER TABLE {} MODIFY COLUMN number {}".format( name, column_type ) ) except: if "Replicated" not in engine: raise insert(100) assert node1.query("SELECT COUNT() FROM {}".format(name)) == "100\n" p = Pool(50) tasks = [] for i in range(5): tasks.append(p.apply_async(alter_move, (100,))) tasks.append(p.apply_async(alter_modify, (100,))) for task in tasks: task.get(timeout=120) assert node1.query("SELECT 1") == "1\n" assert node1.query("SELECT COUNT() FROM {}".format(name)) == "100\n" finally: node1.query_with_retry(f"DROP TABLE IF EXISTS {name} SYNC") def test_simple_replication_and_moves(start_cluster): try: for i, node in enumerate([node1, node2]): node.query_with_retry( """ CREATE TABLE IF NOT EXISTS replicated_table_for_moves ( s1 String ) ENGINE = ReplicatedMergeTree('/clickhouse/replicated_table_for_moves', '{}') ORDER BY tuple() SETTINGS storage_policy='moving_jbod_with_external', old_parts_lifetime=1, cleanup_delay_period=1, cleanup_delay_period_random_add=2, cleanup_thread_preferred_points_per_iteration=0 """.format( i + 1 ) ) def insert(num): for i in range(num): node = random.choice([node1, node2]) data = [] # 1MB in total for i in range(2): data.append(get_random_string(512 * 1024)) # 500KB value node.query_with_retry( "INSERT INTO replicated_table_for_moves VALUES {}".format( ",".join(["(" + x + ")" for x in data]) ) ) def optimize(num): for i in range(num): node = random.choice([node1, node2]) node.query_with_retry("OPTIMIZE TABLE replicated_table_for_moves FINAL") p = Pool(60) tasks = [] tasks.append(p.apply_async(insert, (20,))) tasks.append(p.apply_async(optimize, (20,))) for task in tasks: task.get(timeout=60) node1.query_with_retry( "SYSTEM SYNC REPLICA ON CLUSTER test_cluster replicated_table_for_moves", timeout=5, ) node1.query("SELECT COUNT() FROM replicated_table_for_moves") == "40\n" node2.query("SELECT COUNT() FROM replicated_table_for_moves") == "40\n" data = [] # 1MB in total for i in range(2): data.append(get_random_string(512 * 1024)) # 500KB value time.sleep(3) # wait until old parts will be deleted node1.query("SYSTEM STOP MERGES") node2.query("SYSTEM STOP MERGES") node1.query_with_retry( "INSERT INTO replicated_table_for_moves VALUES {}".format( ",".join(["(" + x + ")" for x in data]) ) ) node2.query_with_retry( "INSERT INTO replicated_table_for_moves VALUES {}".format( ",".join(["(" + x + ")" for x in data]) ) ) time.sleep(3) # nothing was moved disks1 = get_used_disks_for_table(node1, "replicated_table_for_moves") disks2 = get_used_disks_for_table(node2, "replicated_table_for_moves") node2.query("SYSTEM START MERGES ON CLUSTER test_cluster") set(disks1) == set(["jbod1", "external"]) set(disks2) == set(["jbod1", "external"]) finally: for node in [node1, node2]: node.query("DROP TABLE IF EXISTS replicated_table_for_moves SYNC") def test_download_appropriate_disk(start_cluster): try: for i, node in enumerate([node1, node2]): node.query_with_retry( """ CREATE TABLE IF NOT EXISTS replicated_table_for_download ( s1 String ) ENGINE = ReplicatedMergeTree('/clickhouse/replicated_table_for_download', '{}') ORDER BY tuple() SETTINGS storage_policy='moving_jbod_with_external', old_parts_lifetime=1, cleanup_delay_period=1, cleanup_delay_period_random_add=2, cleanup_thread_preferred_points_per_iteration=0 """.format( i + 1 ) ) data = [] for i in range(50): data.append(get_random_string(1024 * 1024)) # 1MB value node1.query_with_retry( "INSERT INTO replicated_table_for_download VALUES {}".format( ",".join(["(" + x + ")" for x in data]) ) ) for _ in range(10): try: print("Syncing replica") node2.query_with_retry( "SYSTEM SYNC REPLICA replicated_table_for_download" ) break except: time.sleep(0.5) disks2 = get_used_disks_for_table(node2, "replicated_table_for_download") assert set(disks2) == set(["external"]) finally: for node in [node1, node2]: node.query_with_retry( "DROP TABLE IF EXISTS replicated_table_for_download SYNC" ) def test_rename(start_cluster): try: node1.query( """ CREATE TABLE IF NOT EXISTS default.renaming_table ( s String ) ENGINE = MergeTree ORDER BY tuple() SETTINGS storage_policy='small_jbod_with_external' """ ) # We want to check that after inserts, some parts were moved to external disk # and some parts are still on the main disk, but because of merge all parts # might end up on external disk. node1.query("SYSTEM STOP MERGES default.renaming_table") # jbod1 disk is 40mb for _ in range(5): data = [] for i in range(10): data.append(get_random_string(1024 * 1024)) # 1MB value node1.query( "INSERT INTO renaming_table VALUES {}".format( ",".join(["(" + x + ")" for x in data]) ) ) # data is moved in the background, so check with retries num_try = 0 while get_used_disks_for_table(node1, "renaming_table") == 1: time.sleep(1) num_try += 1 if num_try == 20: break assert len(get_used_disks_for_table(node1, "renaming_table")) > 1 assert node1.query("SELECT COUNT() FROM default.renaming_table") == "50\n" node1.query("RENAME TABLE default.renaming_table TO default.renaming_table1") assert node1.query("SELECT COUNT() FROM default.renaming_table1") == "50\n" with pytest.raises(QueryRuntimeException): node1.query("SELECT COUNT() FROM default.renaming_table") node1.query("CREATE DATABASE IF NOT EXISTS test") node1.query("RENAME TABLE default.renaming_table1 TO test.renaming_table2") assert node1.query("SELECT COUNT() FROM test.renaming_table2") == "50\n" with pytest.raises(QueryRuntimeException): node1.query("SELECT COUNT() FROM default.renaming_table1") finally: node1.query("DROP TABLE IF EXISTS default.renaming_table SYNC") node1.query("DROP TABLE IF EXISTS default.renaming_table1 SYNC") node1.query("DROP TABLE IF EXISTS test.renaming_table2 SYNC") def test_freeze(start_cluster): try: node1.query( """ CREATE TABLE IF NOT EXISTS default.freezing_table ( d Date, s String ) ENGINE = MergeTree ORDER BY tuple() PARTITION BY toYYYYMM(d) SETTINGS storage_policy='small_jbod_with_external', compress_marks=false, compress_primary_key=false, ratio_of_defaults_for_sparse_serialization=1 """ ) node1.query("SYSTEM STOP MERGES default.freezing_table") for _ in range(5): data = [] dates = [] for i in range(10): data.append(get_random_string(1024 * 1024)) # 1MB value dates.append("toDate('2019-03-05')") node1.query( "INSERT INTO freezing_table VALUES {}".format( ",".join(["(" + d + ", " + s + ")" for d, s in zip(dates, data)]) ) ) disks = get_used_disks_for_table(node1, "freezing_table") assert len(disks) > 1 assert node1.query("SELECT COUNT() FROM default.freezing_table") == "50\n" node1.query("ALTER TABLE freezing_table FREEZE PARTITION 201903") # check shadow files (backups) exists node1.exec_in_container( ["bash", "-c", "find /jbod1/shadow -name '*.mrk2' | grep '.*'"] ) node1.exec_in_container( ["bash", "-c", "find /external/shadow -name '*.mrk2' | grep '.*'"] ) finally: node1.query("DROP TABLE IF EXISTS default.freezing_table SYNC") node1.exec_in_container(["rm", "-rf", "/jbod1/shadow", "/external/shadow"]) def test_kill_while_insert(start_cluster): try: name = "test_kill_while_insert" node1.query( """ CREATE TABLE IF NOT EXISTS {name} ( s String ) ENGINE = MergeTree ORDER BY tuple() SETTINGS storage_policy='small_jbod_with_external' """.format( name=name ) ) data = [] dates = [] for i in range(10): data.append(get_random_string(1024 * 1024)) # 1MB value node1.query( "INSERT INTO {name} VALUES {}".format( ",".join(["(" + s + ")" for s in data]), name=name ) ) disks = get_used_disks_for_table(node1, name) assert set(disks) == {"jbod1"} def ignore_exceptions(f, *args): try: f(*args) except: """(っಠ‿ಠ)っ""" start_time = time.time() long_select = threading.Thread( target=ignore_exceptions, args=(node1.query, "SELECT sleep(3) FROM {name}".format(name=name)), ) long_select.start() time.sleep(0.5) node1.query( "ALTER TABLE {name} MOVE PARTITION tuple() TO DISK 'external'".format( name=name ) ) assert time.time() - start_time < 2 node1.restart_clickhouse(kill=True) try: long_select.join() except: """""" assert node1.query( "SELECT count() FROM {name}".format(name=name) ).splitlines() == ["10"] finally: try: node1.query(f"DROP TABLE IF EXISTS {name} SYNC") except: """ClickHouse may be inactive at this moment and we don't want to mask a meaningful exception.""" def test_move_while_merge(start_cluster): try: name = "test_move_while_merge" node1.query( """ CREATE TABLE IF NOT EXISTS {name} ( n Int64 ) ENGINE = MergeTree ORDER BY sleep(2) SETTINGS storage_policy='small_jbod_with_external' """.format( name=name ) ) node1.query("INSERT INTO {name} VALUES (1)".format(name=name)) node1.query("INSERT INTO {name} VALUES (2)".format(name=name)) parts = get_used_parts_for_table(node1, name) assert len(parts) == 2 def optimize(): node1.query("OPTIMIZE TABLE {name}".format(name=name)) optimize = threading.Thread(target=optimize) optimize.start() time.sleep(0.5) with pytest.raises(QueryRuntimeException): node1.query( "ALTER TABLE {name} MOVE PART '{part}' TO DISK 'external'".format( name=name, part=parts[0] ) ) exiting = False no_exception = {} def alter(): while not exiting: try: node1.query( "ALTER TABLE {name} MOVE PART '{part}' TO DISK 'external'".format( name=name, part=parts[0] ) ) no_exception["missing"] = "exception" break except QueryRuntimeException: """""" alter_thread = threading.Thread(target=alter) alter_thread.start() optimize.join() time.sleep(0.5) exiting = True alter_thread.join() assert len(no_exception) == 0 assert node1.query( "SELECT count() FROM {name}".format(name=name) ).splitlines() == ["2"] finally: node1.query(f"DROP TABLE IF EXISTS {name} SYNC") def test_move_across_policies_does_not_work(start_cluster): try: name = "test_move_across_policies_does_not_work" node1.query( """ CREATE TABLE IF NOT EXISTS {name} ( n Int64 ) ENGINE = MergeTree ORDER BY tuple() SETTINGS storage_policy='jbods_with_external' """.format( name=name ) ) node1.query( """ CREATE TABLE IF NOT EXISTS {name}2 ( n Int64 ) ENGINE = MergeTree ORDER BY tuple() SETTINGS storage_policy='small_jbod_with_external' """.format( name=name ) ) node1.query("""INSERT INTO {name} VALUES (1)""".format(name=name)) try: node1.query( """ALTER TABLE {name} MOVE PARTITION tuple() TO DISK 'jbod2'""".format( name=name ) ) except QueryRuntimeException: """All parts of partition 'all' are already on disk 'jbod2'.""" with pytest.raises( QueryRuntimeException, match=".*because disk does not belong to storage policy.*", ): node1.query( """ALTER TABLE {name}2 ATTACH PARTITION tuple() FROM {name}""".format( name=name ) ) with pytest.raises( QueryRuntimeException, match=".*because disk does not belong to storage policy.*", ): node1.query( """ALTER TABLE {name}2 REPLACE PARTITION tuple() FROM {name}""".format( name=name ) ) with pytest.raises( QueryRuntimeException, match=".*should have the same storage policy of source table.*", ): node1.query( """ALTER TABLE {name} MOVE PARTITION tuple() TO TABLE {name}2""".format( name=name ) ) assert node1.query( """SELECT * FROM {name}""".format(name=name) ).splitlines() == ["1"] finally: node1.query(f"DROP TABLE IF EXISTS {name} SYNC") node1.query(f"DROP TABLE IF EXISTS {name}2 SYNC") def _insert_merge_execute( node, name, policy, parts, cmds, parts_before_cmds, parts_after_cmds ): try: node.query( """ CREATE TABLE IF NOT EXISTS {name} ( n Int64 ) ENGINE = MergeTree ORDER BY tuple() PARTITION BY tuple() TTL now()-1 TO VOLUME 'external' SETTINGS storage_policy='{policy}' """.format( name=name, policy=policy ) ) for i in range(parts): node.query("""INSERT INTO {name} VALUES ({n})""".format(name=name, n=i)) disks = get_used_disks_for_table(node, name) assert set(disks) == {"external"} node.query("""OPTIMIZE TABLE {name}""".format(name=name)) parts = get_used_parts_for_table(node, name) assert len(parts) == parts_before_cmds for cmd in cmds: node.query(cmd) node.query("""OPTIMIZE TABLE {name}""".format(name=name)) parts = get_used_parts_for_table(node, name) assert len(parts) == parts_after_cmds finally: node.query(f"DROP TABLE IF EXISTS {name} SYNC") def _check_merges_are_working(node, storage_policy, volume, shall_work): try: name = "_check_merges_are_working_{storage_policy}_{volume}".format( storage_policy=storage_policy, volume=volume ) node.query( """ CREATE TABLE IF NOT EXISTS {name} ( n Int64 ) ENGINE = MergeTree ORDER BY tuple() PARTITION BY tuple() SETTINGS storage_policy='{storage_policy}' """.format( name=name, storage_policy=storage_policy ) ) created_parts = 24 for i in range(created_parts): node.query("""INSERT INTO {name} VALUES ({n})""".format(name=name, n=i)) try: node.query( """ALTER TABLE {name} MOVE PARTITION tuple() TO VOLUME '{volume}' """.format( name=name, volume=volume ) ) except: """Ignore 'nothing to move'.""" expected_disks = set( node.query( """ SELECT disks FROM system.storage_policies ARRAY JOIN disks WHERE volume_name = '{volume_name}' """.format( volume_name=volume ) ).splitlines() ) disks = get_used_disks_for_table(node, name) assert set(disks) <= expected_disks node.query("""OPTIMIZE TABLE {name} FINAL""".format(name=name)) parts = get_used_parts_for_table(node, name) assert len(parts) == 1 if shall_work else created_parts finally: node.query(f"DROP TABLE IF EXISTS {name} SYNC") def _get_prefer_not_to_merge_for_storage_policy(node, storage_policy): return list( map( int, node.query( "SELECT prefer_not_to_merge FROM system.storage_policies WHERE policy_name = '{}' ORDER BY volume_priority".format( storage_policy ) ).splitlines(), ) ) def test_simple_merge_tree_merges_are_disabled(start_cluster): _check_merges_are_working( node1, "small_jbod_with_external_no_merges", "external", False ) def test_no_merges_in_configuration_allow_from_query_without_reload(start_cluster): try: name = "test_no_merges_in_configuration_allow_from_query_without_reload" policy = "small_jbod_with_external_no_merges" node1.restart_clickhouse(kill=True) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 1] _check_merges_are_working(node1, policy, "external", False) _insert_merge_execute( node1, name, policy, 2, ["SYSTEM START MERGES ON VOLUME {}.external".format(policy)], 2, 1, ) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 0] _check_merges_are_working(node1, policy, "external", True) finally: node1.query("SYSTEM STOP MERGES ON VOLUME {}.external".format(policy)) def test_no_merges_in_configuration_allow_from_query_with_reload(start_cluster): try: name = "test_no_merges_in_configuration_allow_from_query_with_reload" policy = "small_jbod_with_external_no_merges" node1.restart_clickhouse(kill=True) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 1] _check_merges_are_working(node1, policy, "external", False) _insert_merge_execute( node1, name, policy, 2, [ "SYSTEM START MERGES ON VOLUME {}.external".format(policy), "SYSTEM RELOAD CONFIG", ], 2, 1, ) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 0] _check_merges_are_working(node1, policy, "external", True) finally: node1.query("SYSTEM STOP MERGES ON VOLUME {}.external".format(policy)) def test_no_merges_in_configuration_allow_from_query_with_reload_on_cluster( start_cluster, ): try: name = "test_no_merges_in_configuration_allow_from_query_with_reload" policy = "small_jbod_with_external_no_merges" node1.restart_clickhouse(kill=True) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 1] _check_merges_are_working(node1, policy, "external", False) _insert_merge_execute( node1, name, policy, 2, [ "SYSTEM START MERGES ON CLUSTER test_cluster ON VOLUME {}.external".format( policy ), "SYSTEM RELOAD CONFIG ON CLUSTER test_cluster", ], 2, 1, ) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 0] _check_merges_are_working(node1, policy, "external", True) finally: node1.query( "SYSTEM STOP MERGES ON CLUSTER test_cluster ON VOLUME {}.external".format( policy ) ) def test_yes_merges_in_configuration_disallow_from_query_without_reload(start_cluster): try: name = "test_yes_merges_in_configuration_allow_from_query_without_reload" policy = "small_jbod_with_external" node1.restart_clickhouse(kill=True) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 0] _check_merges_are_working(node1, policy, "external", True) _insert_merge_execute( node1, name, policy, 2, [ "SYSTEM STOP MERGES ON VOLUME {}.external".format(policy), "INSERT INTO {name} VALUES (2)".format(name=name), ], 1, 2, ) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 1] _check_merges_are_working(node1, policy, "external", False) finally: node1.query("SYSTEM START MERGES ON VOLUME {}.external".format(policy)) def test_yes_merges_in_configuration_disallow_from_query_with_reload(start_cluster): try: name = "test_yes_merges_in_configuration_allow_from_query_with_reload" policy = "small_jbod_with_external" node1.restart_clickhouse(kill=True) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 0] _check_merges_are_working(node1, policy, "external", True) _insert_merge_execute( node1, name, policy, 2, [ "SYSTEM STOP MERGES ON VOLUME {}.external".format(policy), "INSERT INTO {name} VALUES (2)".format(name=name), "SYSTEM RELOAD CONFIG", ], 1, 2, ) assert _get_prefer_not_to_merge_for_storage_policy(node1, policy) == [0, 1] _check_merges_are_working(node1, policy, "external", False) finally: node1.query("SYSTEM START MERGES ON VOLUME {}.external".format(policy))