mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-15 03:53:41 +00:00
94 lines
3.5 KiB
Python
94 lines
3.5 KiB
Python
import time
|
|
from contextlib import contextmanager
|
|
|
|
import pytest
|
|
from helpers.cluster import ClickHouseCluster
|
|
from helpers.network import PartitionManager
|
|
from helpers.test_tools import assert_eq_with_retry
|
|
|
|
cluster = ClickHouseCluster(__file__)
|
|
|
|
node1 = cluster.add_instance('node1', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
|
|
node2 = cluster.add_instance('node2', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
|
|
node3 = cluster.add_instance('node3', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
|
|
|
|
|
|
@pytest.fixture(scope="module")
|
|
def started_cluster():
|
|
try:
|
|
cluster.start()
|
|
|
|
node_to_shards = [
|
|
(node1, [0, 2]),
|
|
(node2, [0, 1]),
|
|
(node3, [1, 2]),
|
|
]
|
|
|
|
for node, shards in node_to_shards:
|
|
for shard in shards:
|
|
node.query('''
|
|
CREATE DATABASE shard_{shard};
|
|
|
|
CREATE TABLE shard_{shard}.replicated(date Date, id UInt32, shard_id UInt32)
|
|
ENGINE = ReplicatedMergeTree('/clickhouse/tables/{shard}/replicated', '{replica}', date, id, 8192);
|
|
'''.format(shard=shard, replica=node.name))
|
|
|
|
node.query('''
|
|
CREATE TABLE distributed(date Date, id UInt32, shard_id UInt32)
|
|
ENGINE = Distributed(test_cluster, '', replicated, shard_id);
|
|
''')
|
|
|
|
# Insert some data onto different shards using the Distributed table
|
|
to_insert = '''\
|
|
2017-06-16 111 0
|
|
2017-06-16 222 1
|
|
2017-06-16 333 2
|
|
'''
|
|
node1.query("INSERT INTO distributed FORMAT TSV", stdin=to_insert)
|
|
time.sleep(0.5)
|
|
|
|
yield cluster
|
|
|
|
finally:
|
|
cluster.shutdown()
|
|
|
|
|
|
def test(started_cluster):
|
|
# Check that the data has been inserted into correct tables.
|
|
assert_eq_with_retry(node1, "SELECT id FROM shard_0.replicated", '111')
|
|
assert_eq_with_retry(node1, "SELECT id FROM shard_2.replicated", '333')
|
|
|
|
assert_eq_with_retry(node2, "SELECT id FROM shard_0.replicated", '111')
|
|
assert_eq_with_retry(node2, "SELECT id FROM shard_1.replicated", '222')
|
|
|
|
assert_eq_with_retry(node3, "SELECT id FROM shard_1.replicated", '222')
|
|
assert_eq_with_retry(node3, "SELECT id FROM shard_2.replicated", '333')
|
|
|
|
# Check that SELECT from the Distributed table works.
|
|
expected_from_distributed = '''\
|
|
2017-06-16 111 0
|
|
2017-06-16 222 1
|
|
2017-06-16 333 2
|
|
'''
|
|
assert_eq_with_retry(node1, "SELECT * FROM distributed ORDER BY id", expected_from_distributed)
|
|
assert_eq_with_retry(node2, "SELECT * FROM distributed ORDER BY id", expected_from_distributed)
|
|
assert_eq_with_retry(node3, "SELECT * FROM distributed ORDER BY id", expected_from_distributed)
|
|
|
|
# Now isolate node3 from other nodes and check that SELECTs on other nodes still work.
|
|
with PartitionManager() as pm:
|
|
pm.partition_instances(node3, node1, action='REJECT --reject-with tcp-reset')
|
|
pm.partition_instances(node3, node2, action='REJECT --reject-with tcp-reset')
|
|
|
|
assert_eq_with_retry(node1, "SELECT * FROM distributed ORDER BY id", expected_from_distributed)
|
|
assert_eq_with_retry(node2, "SELECT * FROM distributed ORDER BY id", expected_from_distributed)
|
|
|
|
with pytest.raises(Exception):
|
|
print(node3.query_with_retry("SELECT * FROM distributed ORDER BY id", retry_count=5))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
with contextmanager(started_cluster)() as cluster:
|
|
for name, instance in list(cluster.instances.items()):
|
|
print(name, instance.ip_address)
|
|
input("Cluster created, press any key to destroy...")
|