ClickHouse/tests/integration/test_system_merges/test.py

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import threading
import time
import pytest
from helpers.cluster import ClickHouseCluster
cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance(
"node1",
main_configs=["configs/logs_config.xml"],
with_zookeeper=True,
macros={"shard": 0, "replica": 1},
)
node2 = cluster.add_instance(
"node2",
main_configs=["configs/logs_config.xml"],
with_zookeeper=True,
macros={"shard": 0, "replica": 2},
)
@pytest.fixture(scope="module")
def started_cluster():
try:
cluster.start()
node1.query(
"CREATE DATABASE test ENGINE=Ordinary"
) # Different paths with Atomic
node2.query("CREATE DATABASE test ENGINE=Ordinary")
yield cluster
finally:
cluster.shutdown()
def split_tsv(data):
return [x.split("\t") for x in data.splitlines()]
@pytest.mark.parametrize("replicated", ["", "replicated"])
def test_merge_simple(started_cluster, replicated):
try:
clickhouse_path = "/var/lib/clickhouse"
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db_name = "test"
table_name = "merge_simple"
name = db_name + "." + table_name
table_path = "data/" + db_name + "/" + table_name
nodes = [node1, node2] if replicated else [node1]
engine = (
"ReplicatedMergeTree('/clickhouse/test_merge_simple', '{replica}')"
if replicated
else "MergeTree()"
)
node_check = nodes[-1]
starting_block = 0 if replicated else 1
for node in nodes:
node.query(
"""
CREATE TABLE {name}
(
`a` Int64
)
ENGINE = {engine}
ORDER BY sleep(2)
""".format(
engine=engine, name=name
)
)
node1.query("INSERT INTO {name} VALUES (1)".format(name=name))
node1.query("INSERT INTO {name} VALUES (2)".format(name=name))
node1.query("INSERT INTO {name} VALUES (3)".format(name=name))
parts = [
"all_{}_{}_0".format(x, x)
for x in range(starting_block, starting_block + 3)
]
result_part = "all_{}_{}_1".format(starting_block, starting_block + 2)
def optimize():
node1.query("OPTIMIZE TABLE {name}".format(name=name))
wait = threading.Thread(target=time.sleep, args=(5,))
wait.start()
t = threading.Thread(target=optimize)
t.start()
time.sleep(1)
assert (
split_tsv(
node_check.query(
"""
SELECT database, table, num_parts, source_part_names, source_part_paths, result_part_name, result_part_path, partition_id, is_mutation
FROM system.merges
WHERE table = '{name}'
""".format(
name=table_name
)
)
)
== [
[
db_name,
table_name,
"3",
"['{}','{}','{}']".format(*parts),
"['{clickhouse}/{table_path}/{}/','{clickhouse}/{table_path}/{}/','{clickhouse}/{table_path}/{}/']".format(
*parts, clickhouse=clickhouse_path, table_path=table_path
),
result_part,
"{clickhouse}/{table_path}/{}/".format(
result_part, clickhouse=clickhouse_path, table_path=table_path
),
"all",
"0",
]
]
)
t.join()
wait.join()
assert (
node_check.query(
"SELECT * FROM system.merges WHERE table = '{name}'".format(
name=table_name
)
)
== ""
)
finally:
for node in nodes:
node.query("DROP TABLE {name}".format(name=name))
@pytest.mark.parametrize("replicated", ["", "replicated"])
def test_mutation_simple(started_cluster, replicated):
try:
clickhouse_path = "/var/lib/clickhouse"
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db_name = "test"
table_name = "mutation_simple"
name = db_name + "." + table_name
table_path = "data/" + db_name + "/" + table_name
nodes = [node1, node2] if replicated else [node1]
engine = (
"ReplicatedMergeTree('/clickhouse/test_mutation_simple', '{replica}')"
if replicated
else "MergeTree()"
)
node_check = nodes[-1]
starting_block = 0 if replicated else 1
for node in nodes:
node.query(
"""
CREATE TABLE {name}
(
`a` Int64
)
ENGINE = {engine}
ORDER BY tuple()
""".format(
engine=engine, name=name
)
)
node1.query("INSERT INTO {name} VALUES (1)".format(name=name))
part = "all_{}_{}_0".format(starting_block, starting_block)
result_part = "all_{}_{}_0_{}".format(
starting_block, starting_block, starting_block + 1
)
def alter():
node1.query(
"ALTER TABLE {name} UPDATE a = 42 WHERE sleep(2) OR 1".format(
name=name
),
settings={
"mutations_sync": 1,
},
)
t = threading.Thread(target=alter)
t.start()
time.sleep(1)
assert (
split_tsv(
node_check.query(
"""
SELECT database, table, num_parts, source_part_names, source_part_paths, result_part_name, result_part_path, partition_id, is_mutation
FROM system.merges
WHERE table = '{name}'
""".format(
name=table_name
)
)
)
== [
[
db_name,
table_name,
"1",
"['{}']".format(part),
"['{clickhouse}/{table_path}/{}/']".format(
part, clickhouse=clickhouse_path, table_path=table_path
),
result_part,
"{clickhouse}/{table_path}/{}/".format(
result_part, clickhouse=clickhouse_path, table_path=table_path
),
"all",
"1",
],
]
)
t.join()
assert (
node_check.query(
"SELECT * FROM system.merges WHERE table = '{name}'".format(
name=table_name
)
)
== ""
)
finally:
for node in nodes:
node.query("DROP TABLE {name}".format(name=name))