ClickHouse/tests/integration/test_replicated_merge_tree_s3/test.py

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import logging
import random
import string
import time
import pytest
from helpers.cluster import ClickHouseCluster
logging.getLogger().setLevel(logging.INFO)
logging.getLogger().addHandler(logging.StreamHandler())
# Creates S3 bucket for tests and allows anonymous read-write access to it.
def prepare_s3_bucket(cluster):
minio_client = cluster.minio_client
if minio_client.bucket_exists(cluster.minio_bucket):
minio_client.remove_bucket(cluster.minio_bucket)
minio_client.make_bucket(cluster.minio_bucket)
@pytest.fixture(scope="module")
def cluster():
try:
cluster = ClickHouseCluster(__file__)
cluster.add_instance("node1", config_dir="configs", macros={'cluster': 'test1'}, with_minio=True, with_zookeeper=True)
cluster.add_instance("node2", config_dir="configs", macros={'cluster': 'test1'}, with_zookeeper=True)
cluster.add_instance("node3", config_dir="configs", macros={'cluster': 'test1'}, with_zookeeper=True)
logging.info("Starting cluster...")
cluster.start()
logging.info("Cluster started")
prepare_s3_bucket(cluster)
logging.info("S3 bucket created")
yield cluster
finally:
cluster.shutdown()
FILES_OVERHEAD = 1
FILES_OVERHEAD_PER_COLUMN = 2 # Data and mark files
FILES_OVERHEAD_PER_PART = FILES_OVERHEAD_PER_COLUMN * 3 + 2 + 6
def random_string(length):
letters = string.ascii_letters
return ''.join(random.choice(letters) for i in range(length))
def generate_values(date_str, count, sign=1):
data = [[date_str, sign*(i + 1), random_string(10)] for i in range(count)]
data.sort(key=lambda tup: tup[1])
return ",".join(["('{}',{},'{}')".format(x, y, z) for x, y, z in data])
def create_table(cluster):
create_table_statement = """
CREATE TABLE s3_test (
dt Date,
id Int64,
data String,
INDEX min_max (id) TYPE minmax GRANULARITY 3
) ENGINE=ReplicatedMergeTree('/clickhouse/{cluster}/tables/test/s3', '{instance}')
PARTITION BY dt
ORDER BY (dt, id)
2020-04-13 09:20:38 +00:00
SETTINGS storage_policy='s3'
"""
for node in cluster.instances.values():
node.query(create_table_statement)
@pytest.fixture(autouse=True)
def drop_table(cluster):
yield
for node in cluster.instances.values():
node.query("DROP TABLE IF EXISTS s3_test")
minio = cluster.minio_client
# Remove extra objects to prevent tests cascade failing
for obj in list(minio.list_objects(cluster.minio_bucket, 'data/')):
minio.remove_object(cluster.minio_bucket, obj.object_name)
def test_insert_select_replicated(cluster):
create_table(cluster)
all_values = ""
for node_idx in range(1, 4):
node = cluster.instances["node" + str(node_idx)]
values = generate_values("2020-01-0" + str(node_idx), 4096)
node.query("INSERT INTO s3_test VALUES {}".format(values), settings={"insert_quorum": 3})
if node_idx != 1:
all_values += ","
all_values += values
for node_idx in range(1, 4):
node = cluster.instances["node" + str(node_idx)]
assert node.query("SELECT * FROM s3_test order by dt, id FORMAT Values", settings={"select_sequential_consistency": 1}) == all_values
minio = cluster.minio_client
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == 3 * (FILES_OVERHEAD + FILES_OVERHEAD_PER_PART * 3)