ClickHouse/tests/integration/test_hedged_requests/test.py
2021-02-26 18:55:58 +03:00

249 lines
8.5 KiB
Python

import os
import sys
import time
import pytest
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from helpers.cluster import ClickHouseCluster
from helpers.network import PartitionManager
from helpers.test_tools import TSV
cluster = ClickHouseCluster(__file__)
NODES = {'node_' + str(i): None for i in (1, 2, 3)}
NODES['node'] = None
sleep_time = 30
@pytest.fixture(scope="module")
def started_cluster():
NODES['node'] = cluster.add_instance(
'node', with_zookeeper=True, stay_alive=True, main_configs=['configs/remote_servers.xml'], user_configs=['configs/users.xml'])
for name in NODES:
if name != 'node':
NODES[name] = cluster.add_instance(name, with_zookeeper=True, user_configs=['configs/users1.xml'])
try:
cluster.start()
for node_id, node in list(NODES.items()):
node.query('''CREATE TABLE replicated (id UInt32, date Date) ENGINE =
ReplicatedMergeTree('/clickhouse/tables/replicated', '{}') ORDER BY id PARTITION BY toYYYYMM(date)'''.format(node_id))
NODES['node'].query('''CREATE TABLE distributed (id UInt32, date Date) ENGINE =
Distributed('test_cluster', 'default', 'replicated')''')
NODES['node'].query("INSERT INTO distributed VALUES (1, '2020-01-01')")
yield cluster
finally:
cluster.shutdown()
config = '''<yandex>
<profiles>
<default>
<sleep_in_send_tables_status>{sleep_in_send_tables_status}</sleep_in_send_tables_status>
<sleep_in_send_data>{sleep_in_send_data}</sleep_in_send_data>
</default>
</profiles>
</yandex>'''
def check_query(expected_replica, receive_timeout=300):
NODES['node'].restart_clickhouse()
# Without hedged requests select query will last more than 30 seconds,
# with hedged requests it will last just around 1-2 second
start = time.time()
result = NODES['node'].query("SELECT hostName(), id FROM distributed SETTINGS receive_timeout={}".format(receive_timeout));
query_time = time.time() - start
assert TSV(result) == TSV(expected_replica + "\t1")
print("Query time:", query_time)
assert query_time < 10
def test_stuck_replica(started_cluster):
cluster.pause_container("node_1")
check_query(expected_replica="node_2")
cluster.unpause_container("node_1")
def test_send_table_status_sleep(started_cluster):
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=sleep_time, sleep_in_send_data=0))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=0))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=0))
time.sleep(2)
check_query(expected_replica="node_2")
def test_send_table_status_sleep2(started_cluster):
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=sleep_time, sleep_in_send_data=0))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=sleep_time, sleep_in_send_data=0))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=0))
time.sleep(2)
check_query(expected_replica="node_3")
def test_send_data(started_cluster):
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=sleep_time))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=0))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=0))
time.sleep(2)
check_query(expected_replica="node_2")
def test_send_data2(started_cluster):
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=sleep_time))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=sleep_time))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=0))
time.sleep(2)
check_query(expected_replica="node_3")
def test_combination1(started_cluster):
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=sleep_time, sleep_in_send_data=0))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=sleep_time))
time.sleep(2)
check_query(expected_replica="node_3")
def test_combination2(started_cluster):
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=sleep_time))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=sleep_time, sleep_in_send_data=0))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=0))
time.sleep(2)
check_query(expected_replica="node_3")
def test_combination3(started_cluster):
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=sleep_time))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=1, sleep_in_send_data=0))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=sleep_time))
time.sleep(2)
check_query(expected_replica="node_2")
def test_combination4(started_cluster):
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=1, sleep_in_send_data=sleep_time))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=1, sleep_in_send_data=0))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=2, sleep_in_send_data=0))
time.sleep(2)
check_query(expected_replica="node_2")
def test_receive_timeout1(started_cluster):
# Check the situation when first two replicas get receive timeout
# in establishing connection, but the third replica is ok.
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=3, sleep_in_send_data=0))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=3, sleep_in_send_data=0))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=1))
time.sleep(2)
check_query(expected_replica="node_3", receive_timeout=2)
def test_receive_timeout2(started_cluster):
# Check the situation when first replica get receive timeout
# in packet receiving but there are replicas in process of
# connection establishing.
NODES['node_1'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=0, sleep_in_send_data=4))
NODES['node_2'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=2, sleep_in_send_data=0))
NODES['node_3'].replace_config(
'/etc/clickhouse-server/users.d/users1.xml',
config.format(sleep_in_send_tables_status=2, sleep_in_send_data=0))
time.sleep(2)
check_query(expected_replica="node_2", receive_timeout=3)