ClickHouse/dbms/tests/integration/test_merge_tree_s3/test.py
Pavel Kovalenko 5375683f24
DiskS3 hardlinks optimal implementation (#9760)
* Optimal DiskS3 hardlinks implementation and new tests.

* Code style fixes.

* Minor fixed.

* Minor fixes.
2020-03-23 17:45:48 +03:00

320 lines
14 KiB
Python

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("node", config_dir="configs", with_minio=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_WIDE = FILES_OVERHEAD_PER_COLUMN * 3 + 2 + 6
FILES_OVERHEAD_PER_PART_COMPACT = 10
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, table_name, additional_settings=None):
node = cluster.instances["node"]
create_table_statement = """
CREATE TABLE {} (
dt Date,
id Int64,
data String,
INDEX min_max (id) TYPE minmax GRANULARITY 3
) ENGINE=MergeTree()
PARTITION BY dt
ORDER BY (dt, id)
SETTINGS
old_parts_lifetime=0, index_granularity=512
""".format(table_name)
if additional_settings:
create_table_statement += ","
create_table_statement += additional_settings
node.query(create_table_statement)
@pytest.fixture(autouse=True)
def drop_table(cluster):
yield
node = cluster.instances["node"]
minio = cluster.minio_client
node.query("DROP TABLE IF EXISTS s3_test")
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == 0
@pytest.mark.parametrize(
"min_rows_for_wide_part,files_per_part",
[
(0, FILES_OVERHEAD_PER_PART_WIDE),
(8192, FILES_OVERHEAD_PER_PART_COMPACT)
]
)
def test_simple_insert_select(cluster, min_rows_for_wide_part, files_per_part):
create_table(cluster, "s3_test", additional_settings="min_rows_for_wide_part={}".format(min_rows_for_wide_part))
node = cluster.instances["node"]
minio = cluster.minio_client
values1 = generate_values('2020-01-03', 4096)
node.query("INSERT INTO s3_test VALUES {}".format(values1))
assert node.query("SELECT * FROM s3_test order by dt, id FORMAT Values") == values1
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + files_per_part
values2 = generate_values('2020-01-04', 4096)
node.query("INSERT INTO s3_test VALUES {}".format(values2))
assert node.query("SELECT * FROM s3_test ORDER BY dt, id FORMAT Values") == values1 + "," + values2
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + files_per_part*2
assert node.query("SELECT count(*) FROM s3_test where id = 1 FORMAT Values") == "(2)"
@pytest.mark.parametrize(
"merge_vertical", [False, True]
)
def test_insert_same_partition_and_merge(cluster, merge_vertical):
settings = None
if merge_vertical:
settings = """
vertical_merge_algorithm_min_rows_to_activate=0,
vertical_merge_algorithm_min_columns_to_activate=0
"""
create_table(cluster, "s3_test", additional_settings=settings)
node = cluster.instances["node"]
minio = cluster.minio_client
node.query("SYSTEM STOP MERGES s3_test")
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 1024)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 2048)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 1024, -1)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 2048, -1)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096, -1)))
assert node.query("SELECT sum(id) FROM s3_test FORMAT Values") == "(0)"
assert node.query("SELECT count(distinct(id)) FROM s3_test FORMAT Values") == "(8192)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD_PER_PART_WIDE*6 + FILES_OVERHEAD
node.query("SYSTEM START MERGES s3_test")
# Wait for merges and old parts deletion
time.sleep(3)
assert node.query("SELECT sum(id) FROM s3_test FORMAT Values") == "(0)"
assert node.query("SELECT count(distinct(id)) FROM s3_test FORMAT Values") == "(8192)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD_PER_PART_WIDE + FILES_OVERHEAD
def test_alter_table_columns(cluster):
create_table(cluster, "s3_test")
node = cluster.instances["node"]
minio = cluster.minio_client
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096, -1)))
node.query("ALTER TABLE s3_test ADD COLUMN col1 UInt64 DEFAULT 1")
# To ensure parts have merged
node.query("OPTIMIZE TABLE s3_test")
# Wait for merges, mutations and old parts deletion
time.sleep(3)
assert node.query("SELECT sum(col1) FROM s3_test FORMAT Values") == "(8192)"
assert node.query("SELECT sum(col1) FROM s3_test WHERE id > 0 FORMAT Values") == "(4096)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + FILES_OVERHEAD_PER_COLUMN
node.query("ALTER TABLE s3_test MODIFY COLUMN col1 String", settings={"mutations_sync": 2})
# Wait for old parts deletion
time.sleep(3)
assert node.query("SELECT distinct(col1) FROM s3_test FORMAT Values") == "('1')"
# and file with mutation
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == (FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + FILES_OVERHEAD_PER_COLUMN + 1)
node.query("ALTER TABLE s3_test DROP COLUMN col1", settings={"mutations_sync": 2})
# Wait for old parts deletion
time.sleep(3)
# and 2 files with mutations
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + 2
def test_attach_detach_partition(cluster):
create_table(cluster, "s3_test")
node = cluster.instances["node"]
minio = cluster.minio_client
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-04', 4096)))
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(8192)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*2
node.query("ALTER TABLE s3_test DETACH PARTITION '2020-01-03'")
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(4096)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*2
node.query("ALTER TABLE s3_test ATTACH PARTITION '2020-01-03'")
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(8192)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*2
node.query("ALTER TABLE s3_test DROP PARTITION '2020-01-03'")
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(4096)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE
node.query("ALTER TABLE s3_test DETACH PARTITION '2020-01-04'")
node.query("SET allow_drop_detached=1; ALTER TABLE s3_test DROP DETACHED PARTITION '2020-01-04'")
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(0)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD
def test_move_partition_to_another_disk(cluster):
create_table(cluster, "s3_test")
node = cluster.instances["node"]
minio = cluster.minio_client
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-04', 4096)))
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(8192)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*2
node.query("ALTER TABLE s3_test MOVE PARTITION '2020-01-04' TO DISK 'hdd'")
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(8192)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE
def test_table_manipulations(cluster):
create_table(cluster, "s3_test")
node = cluster.instances["node"]
minio = cluster.minio_client
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-04', 4096)))
node.query("RENAME TABLE s3_test TO s3_renamed")
assert node.query("SELECT count(*) FROM s3_renamed FORMAT Values") == "(8192)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*2
node.query("RENAME TABLE s3_renamed TO s3_test")
# TODO: Doesn't work with min_max index.
#assert node.query("SET check_query_single_value_result='false'; CHECK TABLE s3_test FORMAT Values") == "(1)"
node.query("DETACH TABLE s3_test")
node.query("ATTACH TABLE s3_test")
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(8192)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*2
node.query("TRUNCATE TABLE s3_test")
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(0)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD
def test_move_replace_partition_to_another_table(cluster):
create_table(cluster, "s3_test")
node = cluster.instances["node"]
minio = cluster.minio_client
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-04', 4096)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-05', 4096, -1)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-06', 4096, -1)))
assert node.query("SELECT sum(id) FROM s3_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(16384)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*4
create_table(cluster, "s3_clone")
node.query("ALTER TABLE s3_test MOVE PARTITION '2020-01-03' TO TABLE s3_clone")
node.query("ALTER TABLE s3_test MOVE PARTITION '2020-01-05' TO TABLE s3_clone")
assert node.query("SELECT sum(id) FROM s3_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(8192)"
assert node.query("SELECT sum(id) FROM s3_clone FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM s3_clone FORMAT Values") == "(8192)"
# Number of objects in S3 should be unchanged.
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD*2 + FILES_OVERHEAD_PER_PART_WIDE*4
# Add new partitions to source table, but with different values and replace them from copied table.
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-03', 4096, -1)))
node.query("INSERT INTO s3_test VALUES {}".format(generate_values('2020-01-05', 4096)))
assert node.query("SELECT sum(id) FROM s3_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(16384)"
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD*2 + FILES_OVERHEAD_PER_PART_WIDE*6
node.query("ALTER TABLE s3_test REPLACE PARTITION '2020-01-03' FROM s3_clone")
node.query("ALTER TABLE s3_test REPLACE PARTITION '2020-01-05' FROM s3_clone")
assert node.query("SELECT sum(id) FROM s3_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(16384)"
assert node.query("SELECT sum(id) FROM s3_clone FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM s3_clone FORMAT Values") == "(8192)"
# Wait for outdated partitions deletion.
time.sleep(3)
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD*2 + FILES_OVERHEAD_PER_PART_WIDE*4
node.query("DROP TABLE s3_clone")
assert node.query("SELECT sum(id) FROM s3_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM s3_test FORMAT Values") == "(16384)"
# Data should remain in S3
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*4
node.query("ALTER TABLE s3_test FREEZE")
# Number S3 objects should be unchanged.
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE*4
node.query("DROP TABLE s3_test")
# Backup data should remain in S3.
assert len(list(minio.list_objects(cluster.minio_bucket, 'data/'))) == FILES_OVERHEAD_PER_PART_WIDE*4
for obj in list(minio.list_objects(cluster.minio_bucket, 'data/')):
minio.remove_object(cluster.minio_bucket, obj.object_name)