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68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
# pylint: disable=unused-argument
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# pylint: disable=redefined-outer-name
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# pylint: disable=line-too-long
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import pytest
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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n1 = cluster.add_instance('n1', main_configs=['configs/remote_servers.xml'])
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n2 = cluster.add_instance('n2', main_configs=['configs/remote_servers.xml'])
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@pytest.fixture(scope='module', autouse=True)
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def start_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def create_tables(**dist_settings):
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n1.query('DROP TABLE IF EXISTS data')
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n2.query('DROP TABLE IF EXISTS data')
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n1.query('DROP TABLE IF EXISTS dist')
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n1.query('CREATE TABLE data (key Int) Engine=Memory()')
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n2.query('CREATE TABLE data (key Int) Engine=Memory()')
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n1.query("""
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CREATE TABLE dist AS data
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Engine=Distributed(
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integration_test_cluster,
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currentDatabase(),
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data,
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rand()
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)
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""", settings=dist_settings)
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def insert_data(**settings):
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create_tables(**settings)
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n1.query('INSERT INTO dist SELECT * FROM numbers(10)', settings=settings)
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n1.query('SYSTEM FLUSH DISTRIBUTED dist')
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def test_prefer_localhost_replica_1():
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insert_data()
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assert int(n1.query('SELECT count() FROM data')) == 10
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assert int(n2.query('SELECT count() FROM data')) == 0
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def test_prefer_localhost_replica_1_load_balancing_in_order():
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insert_data(load_balancing='in_order')
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assert int(n1.query('SELECT count() FROM data')) == 10
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assert int(n2.query('SELECT count() FROM data')) == 0
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def test_prefer_localhost_replica_0_load_balancing_nearest_hostname():
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insert_data(load_balancing='nearest_hostname', prefer_localhost_replica=0)
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assert int(n1.query('SELECT count() FROM data')) == 10
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assert int(n2.query('SELECT count() FROM data')) == 0
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def test_prefer_localhost_replica_0_load_balancing_in_order():
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insert_data(load_balancing='in_order', prefer_localhost_replica=0)
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assert int(n1.query('SELECT count() FROM data')) == 0
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assert int(n2.query('SELECT count() FROM data')) == 10
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def test_prefer_localhost_replica_0_load_balancing_in_order_sync():
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insert_data(load_balancing='in_order', prefer_localhost_replica=0, insert_distributed_sync=1)
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assert int(n1.query('SELECT count() FROM data')) == 0
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assert int(n2.query('SELECT count() FROM data')) == 10
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