ClickHouse/tests/integration/test_merge_tree_hdfs/test.py
2021-12-10 22:04:38 +01:00

304 lines
12 KiB
Python

import logging
import time
import os
import pytest
from helpers.cluster import ClickHouseCluster
from helpers.utility import generate_values
from pyhdfs import HdfsClient
SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
CONFIG_PATH = os.path.join(SCRIPT_DIR, './_instances/node/configs/config.d/storage_conf.xml')
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
storage_policy='hdfs',
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)
FILES_OVERHEAD = 1
FILES_OVERHEAD_PER_COLUMN = 2 # Data and mark files
FILES_OVERHEAD_PER_PART_WIDE = FILES_OVERHEAD_PER_COLUMN * 3 + 2 + 6 + 1
FILES_OVERHEAD_PER_PART_COMPACT = 10 + 1
@pytest.fixture(scope="module")
def cluster():
try:
cluster = ClickHouseCluster(__file__)
cluster.add_instance("node", main_configs=["configs/config.d/storage_conf.xml"], with_hdfs=True)
logging.info("Starting cluster...")
cluster.start()
logging.info("Cluster started")
fs = HdfsClient(hosts=cluster.hdfs_ip)
fs.mkdirs('/clickhouse')
logging.info("Created HDFS directory")
yield cluster
finally:
cluster.shutdown()
def wait_for_delete_hdfs_objects(cluster, expected, num_tries=30):
fs = HdfsClient(hosts=cluster.hdfs_ip)
while num_tries > 0:
num_hdfs_objects = len(fs.listdir('/clickhouse'))
if num_hdfs_objects == expected:
break
num_tries -= 1
time.sleep(1)
assert(len(fs.listdir('/clickhouse')) == expected)
@pytest.fixture(autouse=True)
def drop_table(cluster):
node = cluster.instances["node"]
fs = HdfsClient(hosts=cluster.hdfs_ip)
hdfs_objects = fs.listdir('/clickhouse')
print('Number of hdfs objects to delete:', len(hdfs_objects), sep=' ')
node.query("DROP TABLE IF EXISTS hdfs_test SYNC")
try:
wait_for_delete_hdfs_objects(cluster, 0)
finally:
hdfs_objects = fs.listdir('/clickhouse')
if len(hdfs_objects) == 0:
return
print("Manually removing extra objects to prevent tests cascade failing: ", hdfs_objects)
for path in hdfs_objects:
fs.delete(path)
@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, "hdfs_test", additional_settings="min_rows_for_wide_part={}".format(min_rows_for_wide_part))
node = cluster.instances["node"]
values1 = generate_values('2020-01-03', 4096)
node.query("INSERT INTO hdfs_test VALUES {}".format(values1))
assert node.query("SELECT * FROM hdfs_test order by dt, id FORMAT Values") == values1
fs = HdfsClient(hosts=cluster.hdfs_ip)
hdfs_objects = fs.listdir('/clickhouse')
print(hdfs_objects)
assert len(hdfs_objects) == FILES_OVERHEAD + files_per_part
values2 = generate_values('2020-01-04', 4096)
node.query("INSERT INTO hdfs_test VALUES {}".format(values2))
assert node.query("SELECT * FROM hdfs_test ORDER BY dt, id FORMAT Values") == values1 + "," + values2
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + files_per_part * 2
assert node.query("SELECT count(*) FROM hdfs_test where id = 1 FORMAT Values") == "(2)"
def test_alter_table_columns(cluster):
create_table(cluster, "hdfs_test")
node = cluster.instances["node"]
fs = HdfsClient(hosts=cluster.hdfs_ip)
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096, -1)))
node.query("ALTER TABLE hdfs_test ADD COLUMN col1 UInt64 DEFAULT 1")
# To ensure parts have merged
node.query("OPTIMIZE TABLE hdfs_test")
assert node.query("SELECT sum(col1) FROM hdfs_test FORMAT Values") == "(8192)"
assert node.query("SELECT sum(col1) FROM hdfs_test WHERE id > 0 FORMAT Values") == "(4096)"
wait_for_delete_hdfs_objects(cluster, FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + FILES_OVERHEAD_PER_COLUMN)
node.query("ALTER TABLE hdfs_test MODIFY COLUMN col1 String", settings={"mutations_sync": 2})
assert node.query("SELECT distinct(col1) FROM hdfs_test FORMAT Values") == "('1')"
# and file with mutation
wait_for_delete_hdfs_objects(cluster, FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + FILES_OVERHEAD_PER_COLUMN + 1)
node.query("ALTER TABLE hdfs_test DROP COLUMN col1", settings={"mutations_sync": 2})
# and 2 files with mutations
wait_for_delete_hdfs_objects(cluster, FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + 2)
def test_attach_detach_partition(cluster):
create_table(cluster, "hdfs_test")
node = cluster.instances["node"]
fs = HdfsClient(hosts=cluster.hdfs_ip)
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-04', 4096)))
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
node.query("ALTER TABLE hdfs_test DETACH PARTITION '2020-01-03'")
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(4096)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
node.query("ALTER TABLE hdfs_test ATTACH PARTITION '2020-01-03'")
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
node.query("ALTER TABLE hdfs_test DROP PARTITION '2020-01-03'")
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(4096)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE
node.query("ALTER TABLE hdfs_test DETACH PARTITION '2020-01-04'")
node.query("ALTER TABLE hdfs_test DROP DETACHED PARTITION '2020-01-04'", settings={"allow_drop_detached": 1})
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(0)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD
def test_move_partition_to_another_disk(cluster):
create_table(cluster, "hdfs_test")
node = cluster.instances["node"]
fs = HdfsClient(hosts=cluster.hdfs_ip)
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-04', 4096)))
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
node.query("ALTER TABLE hdfs_test MOVE PARTITION '2020-01-04' TO DISK 'hdd'")
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE
node.query("ALTER TABLE hdfs_test MOVE PARTITION '2020-01-04' TO DISK 'hdfs'")
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
def test_table_manipulations(cluster):
create_table(cluster, "hdfs_test")
node = cluster.instances["node"]
fs = HdfsClient(hosts=cluster.hdfs_ip)
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-04', 4096)))
node.query("RENAME TABLE hdfs_test TO hdfs_renamed")
assert node.query("SELECT count(*) FROM hdfs_renamed FORMAT Values") == "(8192)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
node.query("RENAME TABLE hdfs_renamed TO hdfs_test")
assert node.query("CHECK TABLE hdfs_test FORMAT Values") == "(1)"
node.query("DETACH TABLE hdfs_test")
node.query("ATTACH TABLE hdfs_test")
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
node.query("TRUNCATE TABLE hdfs_test")
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(0)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD
def test_move_replace_partition_to_another_table(cluster):
create_table(cluster, "hdfs_test")
node = cluster.instances["node"]
fs = HdfsClient(hosts=cluster.hdfs_ip)
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-04', 4096)))
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-05', 4096, -1)))
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-06', 4096, -1)))
assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(16384)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 4
create_table(cluster, "hdfs_clone")
node.query("ALTER TABLE hdfs_test MOVE PARTITION '2020-01-03' TO TABLE hdfs_clone")
node.query("ALTER TABLE hdfs_test MOVE PARTITION '2020-01-05' TO TABLE hdfs_clone")
assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
assert node.query("SELECT sum(id) FROM hdfs_clone FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM hdfs_clone FORMAT Values") == "(8192)"
# Number of objects in HDFS should be unchanged.
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == 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 hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096, -1)))
node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-05', 4096)))
assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(16384)"
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD * 2 + FILES_OVERHEAD_PER_PART_WIDE * 6
node.query("ALTER TABLE hdfs_test REPLACE PARTITION '2020-01-03' FROM hdfs_clone")
node.query("ALTER TABLE hdfs_test REPLACE PARTITION '2020-01-05' FROM hdfs_clone")
assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(16384)"
assert node.query("SELECT sum(id) FROM hdfs_clone FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM hdfs_clone FORMAT Values") == "(8192)"
# Wait for outdated partitions deletion.
print(1)
wait_for_delete_hdfs_objects(cluster, FILES_OVERHEAD * 2 + FILES_OVERHEAD_PER_PART_WIDE * 4)
node.query("DROP TABLE hdfs_clone NO DELAY")
assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(16384)"
# Data should remain in hdfs
hdfs_objects = fs.listdir('/clickhouse')
assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 4