ClickHouse/tests/integration/test_distributed_over_live_view/test.py

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import sys
import time
import pytest
from helpers.cluster import ClickHouseCluster
from helpers.uclient import client, prompt, end_of_block
cluster = ClickHouseCluster(__file__)
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# log = sys.stdout
log = None
NODES = {'node' + str(i): cluster.add_instance(
'node' + str(i),
main_configs=['configs/remote_servers.xml'],
user_configs=['configs/set_distributed_defaults.xml'],
) for i in (1, 2)}
CREATE_TABLES_SQL = '''
DROP TABLE IF EXISTS lv_over_base_table;
DROP TABLE IF EXISTS distributed_table;
DROP TABLE IF EXISTS base_table;
SET allow_experimental_live_view = 1;
CREATE TABLE
base_table(
node String,
key Int32,
value Int32
)
ENGINE = Memory;
CREATE LIVE VIEW lv_over_base_table AS SELECT * FROM base_table;
CREATE TABLE
distributed_table
AS base_table
ENGINE = Distributed(test_cluster, default, base_table, rand());
'''
INSERT_SQL_TEMPLATE = "INSERT INTO base_table VALUES ('{node_id}', {key}, {value})"
@pytest.fixture(scope="function")
def started_cluster():
try:
cluster.start()
for node_index, (node_name, node) in enumerate(NODES.items()):
node.query(CREATE_TABLES_SQL)
for i in range(0, 2):
sql = INSERT_SQL_TEMPLATE.format(node_id=node_name, key=i, value=i + (node_index * 10))
node.query(sql)
yield cluster
finally:
cluster.shutdown()
def poll_query(node, query, expected, timeout):
"""Repeatedly execute query until either expected result is returned or timeout occurs.
"""
start_time = time.time()
while node.query(query) != expected and time.time() - start_time < timeout:
pass
assert node.query(query) == expected
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@pytest.mark.parametrize("node", list(NODES.values())[:1])
@pytest.mark.parametrize("source", ["lv_over_distributed_table"])
class TestLiveViewOverDistributedSuite:
def test_distributed_over_live_view_order_by_node(self, started_cluster, node, source):
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node0, node1 = list(NODES.values())
select_query = "SELECT * FROM distributed_over_lv ORDER BY node, key FORMAT CSV"
select_query_dist_table = "SELECT * FROM distributed_table ORDER BY node, key FORMAT CSV"
select_count_query = "SELECT count() FROM distributed_over_lv"
with client(name="client1> ", log=log, command=" ".join(node0.client.command)) as client1, \
client(name="client2> ", log=log, command=" ".join(node1.client.command)) as client2:
client1.expect(prompt)
client2.expect(prompt)
client1.send("DROP TABLE IF EXISTS distributed_over_lv")
client1.expect(prompt)
client1.send(
"CREATE TABLE distributed_over_lv AS lv_over_base_table ENGINE = Distributed(test_cluster, default, lv_over_base_table)")
client1.expect(prompt)
client1.send(select_query)
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client1.expect('"node1",0,0')
client1.expect('"node1",1,1')
client1.expect('"node2",0,10')
client1.expect('"node2",1,11')
client1.expect(prompt)
client1.send("INSERT INTO distributed_table VALUES ('node1', 1, 3), ('node1', 2, 3)")
client1.expect(prompt)
client2.send("INSERT INTO distributed_table VALUES ('node1', 3, 3)")
client2.expect(prompt)
poll_query(node0, select_count_query, "7\n", timeout=60)
print("\n--DEBUG1--")
print(select_query)
print(node0.query(select_query))
print("---------")
print("\n--DEBUG2--")
print(select_query_dist_table)
print(node0.query(select_query_dist_table))
print("---------")
client1.send(select_query)
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client1.expect('"node1",0,0')
client1.expect('"node1",1,1')
client1.expect('"node1",1,3')
client1.expect('"node1",2,3')
client1.expect('"node1",3,3')
client1.expect('"node2",0,10')
client1.expect('"node2",1,11')
client1.expect(prompt)
def test_distributed_over_live_view_order_by_key(self, started_cluster, node, source):
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node0, node1 = list(NODES.values())
select_query = "SELECT * FROM distributed_over_lv ORDER BY key, node FORMAT CSV"
select_count_query = "SELECT count() FROM distributed_over_lv"
with client(name="client1> ", log=log, command=" ".join(node0.client.command)) as client1, \
client(name="client2> ", log=log, command=" ".join(node1.client.command)) as client2:
client1.expect(prompt)
client2.expect(prompt)
client1.send("DROP TABLE IF EXISTS distributed_over_lv")
client1.expect(prompt)
client1.send(
"CREATE TABLE distributed_over_lv AS lv_over_base_table ENGINE = Distributed(test_cluster, default, lv_over_base_table)")
client1.expect(prompt)
client1.send(select_query)
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client1.expect('"node1",0,0')
client1.expect('"node2",0,10')
client1.expect('"node1",1,1')
client1.expect('"node2",1,11')
client1.expect(prompt)
client1.send("INSERT INTO distributed_table VALUES ('node1', 1, 3), ('node1', 2, 3)")
client1.expect(prompt)
client2.send("INSERT INTO distributed_table VALUES ('node1', 3, 3)")
client2.expect(prompt)
poll_query(node0, select_count_query, "7\n", timeout=60)
client1.send(select_query)
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client1.expect('"node1",0,0')
client1.expect('"node2",0,10')
client1.expect('"node1",1,1')
client1.expect('"node1",1,3')
client1.expect('"node2",1,11')
client1.expect('"node1",2,3')
client1.expect('"node1",3,3')
client1.expect(prompt)
def test_distributed_over_live_view_group_by_node(self, started_cluster, node, source):
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node0, node1 = list(NODES.values())
select_query = "SELECT node, SUM(value) FROM distributed_over_lv GROUP BY node ORDER BY node FORMAT CSV"
with client(name="client1> ", log=log, command=" ".join(node0.client.command)) as client1, \
client(name="client2> ", log=log, command=" ".join(node1.client.command)) as client2:
client1.expect(prompt)
client2.expect(prompt)
client1.send("DROP TABLE IF EXISTS distributed_over_lv")
client1.expect(prompt)
client1.send(
"CREATE TABLE distributed_over_lv AS lv_over_base_table ENGINE = Distributed(test_cluster, default, lv_over_base_table)")
client1.expect(prompt)
client1.send(select_query)
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client1.expect('"node1",1')
client1.expect('"node2",21')
client1.expect(prompt)
client2.send("INSERT INTO distributed_table VALUES ('node1', 2, 2)")
client2.expect(prompt)
poll_query(node0, select_query, '"node1",3\n"node2",21\n', timeout=60)
client1.send(select_query)
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client1.expect('"node1",3')
client1.expect('"node2",21')
client1.expect(prompt)
client1.send("INSERT INTO distributed_table VALUES ('node1', 1, 3), ('node1', 3, 3)")
client1.expect(prompt)
client2.send("INSERT INTO distributed_table VALUES ('node1', 3, 3)")
client2.expect(prompt)
poll_query(node0, select_query, '"node1",12\n"node2",21\n', timeout=60)
client1.send(select_query)
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client1.expect('"node1",12')
client1.expect('"node2",21')
client1.expect(prompt)
def test_distributed_over_live_view_group_by_key(self, started_cluster, node, source):
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node0, node1 = list(NODES.values())
select_query = "SELECT key, SUM(value) FROM distributed_over_lv GROUP BY key ORDER BY key FORMAT CSV"
with client(name="client1> ", log=log, command=" ".join(node0.client.command)) as client1, \
client(name="client2> ", log=log, command=" ".join(node1.client.command)) as client2:
client1.expect(prompt)
client2.expect(prompt)
client1.send("DROP TABLE IF EXISTS distributed_over_lv")
client1.expect(prompt)
client1.send(
"CREATE TABLE distributed_over_lv AS lv_over_base_table ENGINE = Distributed(test_cluster, default, lv_over_base_table)")
client1.expect(prompt)
client1.send(select_query)
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client1.expect('0,10')
client1.expect('1,12')
client1.expect(prompt)
client2.send("INSERT INTO distributed_table VALUES ('node1', 2, 2)")
client2.expect(prompt)
poll_query(node0, "SELECT count() FROM (%s)" % select_query.rsplit("FORMAT")[0], "3\n", timeout=60)
client1.send(select_query)
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client1.expect('0,10')
client1.expect('1,12')
client1.expect('2,2')
client1.expect(prompt)
client2.send("INSERT INTO distributed_table VALUES ('node1', 1, 3), ('node1', 3, 3)")
client2.expect(prompt)
poll_query(node0, "SELECT count() FROM (%s)" % select_query.rsplit("FORMAT")[0], "4\n", timeout=60)
client1.send(select_query)
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client1.expect('0,10')
client1.expect('1,15')
client1.expect('2,2')
client1.expect('3,3')
client1.expect(prompt)
def test_distributed_over_live_view_sum(self, started_cluster, node, source):
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node0, node1 = list(NODES.values())
with client(name="client1> ", log=log, command=" ".join(node0.client.command)) as client1, \
client(name="client2> ", log=log, command=" ".join(node1.client.command)) as client2:
client1.expect(prompt)
client2.expect(prompt)
client1.send("DROP TABLE IF EXISTS distributed_over_lv")
client1.expect(prompt)
client1.send(
"CREATE TABLE distributed_over_lv AS lv_over_base_table ENGINE = Distributed(test_cluster, default, lv_over_base_table)")
client1.expect(prompt)
client1.send("SELECT sum(value) FROM distributed_over_lv")
client1.expect(r"22" + end_of_block)
client1.expect(prompt)
client2.send("INSERT INTO distributed_table VALUES ('node1', 2, 2)")
client2.expect(prompt)
poll_query(node0, "SELECT sum(value) FROM distributed_over_lv", "24\n", timeout=60)
client2.send("INSERT INTO distributed_table VALUES ('node1', 3, 3), ('node1', 4, 4)")
client2.expect(prompt)
poll_query(node0, "SELECT sum(value) FROM distributed_over_lv", "31\n", timeout=60)