ClickHouse/tests/integration/test_cluster_copier/trivial_test.py

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import os
import sys
import time
from contextlib import contextmanager
import docker
import pytest
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CURRENT_TEST_DIR = os.path.dirname(os.path.abspath(__file__))
sys.path.insert(0, os.path.dirname(CURRENT_TEST_DIR))
from helpers.cluster import ClickHouseCluster
from helpers.test_tools import TSV
COPYING_FAIL_PROBABILITY = 0.33
MOVING_FAIL_PROBABILITY = 0.1
cluster = None
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@pytest.fixture(scope="function")
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def started_cluster():
global cluster
try:
clusters_schema = {
"0": {"0": ["0"]},
"1": {"0": ["0"]}
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}
cluster = ClickHouseCluster(__file__)
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for cluster_name, shards in clusters_schema.items():
for shard_name, replicas in shards.items():
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for replica_name in replicas:
name = "s{}_{}_{}".format(cluster_name, shard_name, replica_name)
cluster.add_instance(name,
main_configs=[], user_configs=[],
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macros={"cluster": cluster_name, "shard": shard_name, "replica": replica_name},
with_zookeeper=True)
cluster.start()
yield cluster
finally:
pass
cluster.shutdown()
class TaskTrivial:
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def __init__(self, cluster, use_sample_offset):
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self.cluster = cluster
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if use_sample_offset:
self.zk_task_path = "/clickhouse-copier/task_trivial_use_sample_offset"
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else:
self.zk_task_path = "/clickhouse-copier/task_trivial"
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self.copier_task_config = open(os.path.join(CURRENT_TEST_DIR, 'task_trivial.xml'), 'r').read()
def start(self):
source = cluster.instances['s0_0_0']
destination = cluster.instances['s1_0_0']
for node in [source, destination]:
node.query("DROP DATABASE IF EXISTS default")
node.query("CREATE DATABASE IF NOT EXISTS default")
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source.query("CREATE TABLE trivial (d UInt64, d1 UInt64 MATERIALIZED d+1) "
"ENGINE=ReplicatedMergeTree('/clickhouse/tables/source_trivial_cluster/1/trivial', '1') "
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"PARTITION BY d % 5 ORDER BY (d, sipHash64(d)) SAMPLE BY sipHash64(d) SETTINGS index_granularity = 16")
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source.query("INSERT INTO trivial SELECT * FROM system.numbers LIMIT 1002",
settings={"insert_distributed_sync": 1})
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def check(self):
source = cluster.instances['s0_0_0']
destination = cluster.instances['s1_0_0']
assert TSV(source.query("SELECT count() FROM trivial")) == TSV("1002\n")
assert TSV(destination.query("SELECT count() FROM trivial")) == TSV("1002\n")
for node in [source, destination]:
node.query("DROP TABLE trivial")
def execute_task(task, cmd_options):
task.start()
zk = cluster.get_kazoo_client('zoo1')
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print("Use ZooKeeper server: {}:{}".format(zk.hosts[0][0], zk.hosts[0][1]))
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zk_task_path = task.zk_task_path
zk.ensure_path(zk_task_path)
zk.create(zk_task_path + "/description", task.copier_task_config)
# Run cluster-copier processes on each node
docker_api = docker.from_env().api
copiers_exec_ids = []
cmd = ['/usr/bin/clickhouse', 'copier',
'--config', '/etc/clickhouse-server/config-copier.xml',
'--task-path', zk_task_path,
'--base-dir', '/var/log/clickhouse-server/copier']
cmd += cmd_options
print(cmd)
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for instance_name, instance in cluster.instances.items():
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container = instance.get_docker_handle()
exec_id = docker_api.exec_create(container.id, cmd, stderr=True)
docker_api.exec_start(exec_id, detach=True)
copiers_exec_ids.append(exec_id)
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print("Copier for {} ({}) has started".format(instance.name, instance.ip_address))
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# Wait for copiers stopping and check their return codes
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for exec_id, instance in zip(copiers_exec_ids, iter(cluster.instances.values())):
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while True:
res = docker_api.exec_inspect(exec_id)
if not res['Running']:
break
time.sleep(1)
assert res['ExitCode'] == 0, "Instance: {} ({}). Info: {}".format(instance.name, instance.ip_address, repr(res))
try:
task.check()
finally:
zk.delete(zk_task_path, recursive=True)
# Tests
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@pytest.mark.parametrize(
('use_sample_offset'),
[
False,
True
]
)
def test_trivial_copy(started_cluster, use_sample_offset):
if use_sample_offset:
execute_task(TaskTrivial(started_cluster, use_sample_offset), ['--experimental-use-sample-offset', '1'])
else:
print("AAAAA")
execute_task(TaskTrivial(started_cluster, use_sample_offset), [])
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@pytest.mark.parametrize(
('use_sample_offset'),
[
False,
True
]
)
def test_trivial_copy_with_copy_fault(started_cluster, use_sample_offset):
if use_sample_offset:
execute_task(TaskTrivial(started_cluster), ['--copy-fault-probability', str(COPYING_FAIL_PROBABILITY),
'--experimental-use-sample-offset', '1'])
else:
execute_task(TaskTrivial(started_cluster), ['--copy-fault-probability', str(COPYING_FAIL_PROBABILITY)])
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@pytest.mark.parametrize(
('use_sample_offset'),
[
False,
True
]
)
def test_trivial_copy_with_move_fault(started_cluster, use_sample_offset):
if use_sample_offset:
execute_task(TaskTrivial(started_cluster), ['--move-fault-probability', str(MOVING_FAIL_PROBABILITY),
'--experimental-use-sample-offset', '1'])
else:
execute_task(TaskTrivial(started_cluster), ['--move-fault-probability', str(MOVING_FAIL_PROBABILITY)])
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if __name__ == '__main__':
with contextmanager(started_cluster)() as cluster:
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for name, instance in list(cluster.instances.items()):
print(name, instance.ip_address)
input("Cluster created, press any key to destroy...")