ClickHouse/tests/integration/test_restore_replica/test.py

172 lines
5.3 KiB
Python

import time
import pytest
from helpers.cluster import ClickHouseCluster
from helpers.cluster import ClickHouseKiller
from helpers.test_tools import assert_eq_with_retry
def fill_nodes(nodes):
for node in nodes:
node.query("DROP TABLE IF EXISTS test SYNC")
for node in nodes:
node.query(
"""
CREATE TABLE test(n UInt32)
ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/', '{replica}')
ORDER BY n PARTITION BY n % 10;
""".format(
replica=node.name
)
)
cluster = ClickHouseCluster(__file__)
configs = ["configs/remote_servers.xml"]
node_1 = cluster.add_instance("replica1", with_zookeeper=True, main_configs=configs)
node_2 = cluster.add_instance("replica2", with_zookeeper=True, main_configs=configs)
node_3 = cluster.add_instance("replica3", with_zookeeper=True, main_configs=configs)
nodes = [node_1, node_2, node_3]
def fill_table():
fill_nodes(nodes)
check_data(0, 0)
# it will create multiple parts in each partition and probably cause merges
node_1.query("INSERT INTO test SELECT number + 0 FROM numbers(200)")
node_1.query("INSERT INTO test SELECT number + 200 FROM numbers(200)")
node_1.query("INSERT INTO test SELECT number + 400 FROM numbers(200)")
node_1.query("INSERT INTO test SELECT number + 600 FROM numbers(200)")
node_1.query("INSERT INTO test SELECT number + 800 FROM numbers(200)")
check_data(499500, 1000)
@pytest.fixture(scope="module")
def start_cluster():
try:
cluster.start()
fill_nodes(nodes)
yield cluster
except Exception as ex:
print(ex)
finally:
cluster.shutdown()
def check_data(_sum: int, count: int) -> None:
res = "{}\t{}\n".format(_sum, count)
assert_eq_with_retry(node_1, "SELECT sum(n), count() FROM test", res)
assert_eq_with_retry(node_2, "SELECT sum(n), count() FROM test", res)
assert_eq_with_retry(node_3, "SELECT sum(n), count() FROM test", res)
def check_after_restoration():
check_data(1999000, 2000)
for node in nodes:
node.query_and_get_error("SYSTEM RESTORE REPLICA test")
def test_restore_replica_invalid_tables(start_cluster):
print("Checking the invocation on non-existent and non-replicated tables")
node_1.query_and_get_error("SYSTEM RESTORE REPLICA i_dont_exist_42")
node_1.query_and_get_error("SYSTEM RESTORE REPLICA no_db.i_dont_exist_42")
node_1.query_and_get_error("SYSTEM RESTORE REPLICA system.numbers")
def test_restore_replica_sequential(start_cluster):
zk = cluster.get_kazoo_client("zoo1")
fill_table()
print("Deleting root ZK path metadata")
zk.delete("/clickhouse/tables/test", recursive=True)
assert zk.exists("/clickhouse/tables/test") is None
node_1.query("SYSTEM RESTART REPLICA test")
node_1.query_and_get_error(
"INSERT INTO test SELECT number AS num FROM numbers(1000,2000) WHERE num % 2 = 0"
)
print("Restoring replica1")
node_1.query("SYSTEM RESTORE REPLICA test")
assert zk.exists("/clickhouse/tables/test")
check_data(499500, 1000)
node_1.query("INSERT INTO test SELECT number + 1000 FROM numbers(1000)")
print("Restoring other replicas")
node_2.query("SYSTEM RESTART REPLICA test")
node_2.query("SYSTEM RESTORE REPLICA test")
node_3.query("SYSTEM RESTART REPLICA test")
node_3.query("SYSTEM RESTORE REPLICA test")
node_2.query("SYSTEM SYNC REPLICA test")
node_3.query("SYSTEM SYNC REPLICA test")
check_after_restoration()
def test_restore_replica_parallel(start_cluster):
zk = cluster.get_kazoo_client("zoo1")
fill_table()
print("Deleting root ZK path metadata")
zk.delete("/clickhouse/tables/test", recursive=True)
assert zk.exists("/clickhouse/tables/test") is None
node_1.query("SYSTEM RESTART REPLICA test")
node_1.query_and_get_error(
"INSERT INTO test SELECT number AS num FROM numbers(1000,2000) WHERE num % 2 = 0"
)
print("Restoring replicas in parallel")
node_2.query("SYSTEM RESTART REPLICA test")
node_3.query("SYSTEM RESTART REPLICA test")
node_1.query("SYSTEM RESTORE REPLICA test ON CLUSTER test_cluster")
assert zk.exists("/clickhouse/tables/test")
check_data(499500, 1000)
node_1.query("INSERT INTO test SELECT number + 1000 FROM numbers(1000)")
check_after_restoration()
def test_restore_replica_alive_replicas(start_cluster):
zk = cluster.get_kazoo_client("zoo1")
fill_table()
print("Deleting replica2 path, trying to restore replica1")
zk.delete("/clickhouse/tables/test/replicas/replica2", recursive=True)
assert zk.exists("/clickhouse/tables/test/replicas/replica2") is None
node_1.query_and_get_error("SYSTEM RESTORE REPLICA test")
print("Deleting replica1 path, trying to restore replica1")
zk.delete("/clickhouse/tables/test/replicas/replica1", recursive=True)
assert zk.exists("/clickhouse/tables/test/replicas/replica1") is None
node_1.query("SYSTEM RESTART REPLICA test")
node_1.query("SYSTEM RESTORE REPLICA test")
node_2.query("SYSTEM RESTART REPLICA test")
node_2.query("SYSTEM RESTORE REPLICA test")
check_data(499500, 1000)
node_1.query("INSERT INTO test SELECT number + 1000 FROM numbers(1000)")
node_2.query("SYSTEM SYNC REPLICA test")
node_3.query("SYSTEM SYNC REPLICA test")
check_after_restoration()