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https://github.com/ClickHouse/ClickHouse.git
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318 lines
13 KiB
Python
318 lines
13 KiB
Python
import logging
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import random
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import string
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import time
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import threading
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import os
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import pytest
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from helpers.cluster import ClickHouseCluster
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from pyhdfs import HdfsClient
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SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
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CONFIG_PATH = os.path.join(SCRIPT_DIR, './_instances/node/configs/config.d/storage_conf.xml')
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def create_table(cluster, table_name, additional_settings=None):
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node = cluster.instances["node"]
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create_table_statement = """
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CREATE TABLE {} (
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dt Date, id Int64, data String,
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INDEX min_max (id) TYPE minmax GRANULARITY 3
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) ENGINE=MergeTree()
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PARTITION BY dt
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ORDER BY (dt, id)
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SETTINGS
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storage_policy='hdfs',
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old_parts_lifetime=0,
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index_granularity=512
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""".format(table_name)
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if additional_settings:
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create_table_statement += ","
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create_table_statement += additional_settings
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node.query(create_table_statement)
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FILES_OVERHEAD = 1
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FILES_OVERHEAD_PER_COLUMN = 2 # Data and mark files
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FILES_OVERHEAD_PER_PART_WIDE = FILES_OVERHEAD_PER_COLUMN * 3 + 2 + 6 + 1
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FILES_OVERHEAD_PER_PART_COMPACT = 10 + 1
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def random_string(length):
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letters = string.ascii_letters
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return ''.join(random.choice(letters) for i in range(length))
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def generate_values(date_str, count, sign=1):
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data = [[date_str, sign * (i + 1), random_string(10)] for i in range(count)]
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data.sort(key=lambda tup: tup[1])
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return ",".join(["('{}',{},'{}')".format(x, y, z) for x, y, z in data])
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@pytest.fixture(scope="module")
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def cluster():
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try:
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cluster = ClickHouseCluster(__file__)
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cluster.add_instance("node", main_configs=["configs/config.d/storage_conf.xml",
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"configs/config.d/log_conf.xml"], with_hdfs=True)
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logging.info("Starting cluster...")
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cluster.start()
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logging.info("Cluster started")
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fs = HdfsClient(hosts='localhost')
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fs.mkdirs('/clickhouse')
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logging.info("Created HDFS directory")
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yield cluster
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finally:
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cluster.shutdown()
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def wait_for_delete_hdfs_objects(cluster, expected, num_tries=30):
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fs = HdfsClient(hosts='localhost')
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while num_tries > 0:
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num_hdfs_objects = len(fs.listdir('/clickhouse'))
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if num_hdfs_objects == expected:
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break;
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num_tries -= 1
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time.sleep(1)
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assert(len(fs.listdir('/clickhouse')) == expected)
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@pytest.fixture(autouse=True)
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def drop_table(cluster):
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node = cluster.instances["node"]
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fs = HdfsClient(hosts='localhost')
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hdfs_objects = fs.listdir('/clickhouse')
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print('Number of hdfs objects to delete:', len(hdfs_objects), sep=' ')
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node.query("DROP TABLE IF EXISTS hdfs_test SYNC")
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try:
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wait_for_delete_hdfs_objects(cluster, 0)
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finally:
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hdfs_objects = fs.listdir('/clickhouse')
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if len(hdfs_objects) == 0:
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return
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print("Manually removing extra objects to prevent tests cascade failing: ", hdfs_objects)
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for path in hdfs_objects:
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fs.delete(path)
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@pytest.mark.parametrize("min_rows_for_wide_part,files_per_part", [(0, FILES_OVERHEAD_PER_PART_WIDE), (8192, FILES_OVERHEAD_PER_PART_COMPACT)])
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def test_simple_insert_select(cluster, min_rows_for_wide_part, files_per_part):
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create_table(cluster, "hdfs_test", additional_settings="min_rows_for_wide_part={}".format(min_rows_for_wide_part))
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node = cluster.instances["node"]
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values1 = generate_values('2020-01-03', 4096)
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node.query("INSERT INTO hdfs_test VALUES {}".format(values1))
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assert node.query("SELECT * FROM hdfs_test order by dt, id FORMAT Values") == values1
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fs = HdfsClient(hosts='localhost')
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hdfs_objects = fs.listdir('/clickhouse')
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print(hdfs_objects)
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assert len(hdfs_objects) == FILES_OVERHEAD + files_per_part
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values2 = generate_values('2020-01-04', 4096)
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node.query("INSERT INTO hdfs_test VALUES {}".format(values2))
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assert node.query("SELECT * FROM hdfs_test ORDER BY dt, id FORMAT Values") == values1 + "," + values2
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + files_per_part * 2
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assert node.query("SELECT count(*) FROM hdfs_test where id = 1 FORMAT Values") == "(2)"
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def test_alter_table_columns(cluster):
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create_table(cluster, "hdfs_test")
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node = cluster.instances["node"]
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fs = HdfsClient(hosts='localhost')
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096, -1)))
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node.query("ALTER TABLE hdfs_test ADD COLUMN col1 UInt64 DEFAULT 1")
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# To ensure parts have merged
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node.query("OPTIMIZE TABLE hdfs_test")
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assert node.query("SELECT sum(col1) FROM hdfs_test FORMAT Values") == "(8192)"
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assert node.query("SELECT sum(col1) FROM hdfs_test WHERE id > 0 FORMAT Values") == "(4096)"
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wait_for_delete_hdfs_objects(cluster, FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + FILES_OVERHEAD_PER_COLUMN)
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node.query("ALTER TABLE hdfs_test MODIFY COLUMN col1 String", settings={"mutations_sync": 2})
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assert node.query("SELECT distinct(col1) FROM hdfs_test FORMAT Values") == "('1')"
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# and file with mutation
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wait_for_delete_hdfs_objects(cluster, FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + FILES_OVERHEAD_PER_COLUMN + 1)
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node.query("ALTER TABLE hdfs_test DROP COLUMN col1", settings={"mutations_sync": 2})
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# and 2 files with mutations
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wait_for_delete_hdfs_objects(cluster, FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE + 2)
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def test_attach_detach_partition(cluster):
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create_table(cluster, "hdfs_test")
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node = cluster.instances["node"]
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fs = HdfsClient(hosts='localhost')
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-04', 4096)))
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
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node.query("ALTER TABLE hdfs_test DETACH PARTITION '2020-01-03'")
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(4096)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
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node.query("ALTER TABLE hdfs_test ATTACH PARTITION '2020-01-03'")
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
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node.query("ALTER TABLE hdfs_test DROP PARTITION '2020-01-03'")
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(4096)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE
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node.query("ALTER TABLE hdfs_test DETACH PARTITION '2020-01-04'")
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node.query("ALTER TABLE hdfs_test DROP DETACHED PARTITION '2020-01-04'", settings={"allow_drop_detached": 1})
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(0)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD
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def test_move_partition_to_another_disk(cluster):
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create_table(cluster, "hdfs_test")
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node = cluster.instances["node"]
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fs = HdfsClient(hosts='localhost')
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-04', 4096)))
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
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node.query("ALTER TABLE hdfs_test MOVE PARTITION '2020-01-04' TO DISK 'hdd'")
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE
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node.query("ALTER TABLE hdfs_test MOVE PARTITION '2020-01-04' TO DISK 'hdfs'")
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
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def test_table_manipulations(cluster):
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create_table(cluster, "hdfs_test")
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node = cluster.instances["node"]
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fs = HdfsClient(hosts='localhost')
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-04', 4096)))
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node.query("RENAME TABLE hdfs_test TO hdfs_renamed")
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assert node.query("SELECT count(*) FROM hdfs_renamed FORMAT Values") == "(8192)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
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node.query("RENAME TABLE hdfs_renamed TO hdfs_test")
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assert node.query("CHECK TABLE hdfs_test FORMAT Values") == "(1)"
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node.query("DETACH TABLE hdfs_test")
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node.query("ATTACH TABLE hdfs_test")
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 2
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node.query("TRUNCATE TABLE hdfs_test")
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(0)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD
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def test_move_replace_partition_to_another_table(cluster):
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create_table(cluster, "hdfs_test")
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node = cluster.instances["node"]
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fs = HdfsClient(hosts='localhost')
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096)))
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-04', 4096)))
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-05', 4096, -1)))
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-06', 4096, -1)))
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assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(16384)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 4
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create_table(cluster, "hdfs_clone")
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node.query("ALTER TABLE hdfs_test MOVE PARTITION '2020-01-03' TO TABLE hdfs_clone")
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node.query("ALTER TABLE hdfs_test MOVE PARTITION '2020-01-05' TO TABLE hdfs_clone")
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assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(8192)"
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assert node.query("SELECT sum(id) FROM hdfs_clone FORMAT Values") == "(0)"
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assert node.query("SELECT count(*) FROM hdfs_clone FORMAT Values") == "(8192)"
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# Number of objects in HDFS should be unchanged.
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD * 2 + FILES_OVERHEAD_PER_PART_WIDE * 4
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# Add new partitions to source table, but with different values and replace them from copied table.
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-03', 4096, -1)))
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node.query("INSERT INTO hdfs_test VALUES {}".format(generate_values('2020-01-05', 4096)))
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assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(16384)"
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD * 2 + FILES_OVERHEAD_PER_PART_WIDE * 6
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node.query("ALTER TABLE hdfs_test REPLACE PARTITION '2020-01-03' FROM hdfs_clone")
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node.query("ALTER TABLE hdfs_test REPLACE PARTITION '2020-01-05' FROM hdfs_clone")
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assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(16384)"
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assert node.query("SELECT sum(id) FROM hdfs_clone FORMAT Values") == "(0)"
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assert node.query("SELECT count(*) FROM hdfs_clone FORMAT Values") == "(8192)"
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# Wait for outdated partitions deletion.
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print(1)
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wait_for_delete_hdfs_objects(cluster, FILES_OVERHEAD * 2 + FILES_OVERHEAD_PER_PART_WIDE * 4)
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node.query("DROP TABLE hdfs_clone NO DELAY")
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assert node.query("SELECT sum(id) FROM hdfs_test FORMAT Values") == "(0)"
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assert node.query("SELECT count(*) FROM hdfs_test FORMAT Values") == "(16384)"
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# Data should remain in hdfs
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hdfs_objects = fs.listdir('/clickhouse')
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assert len(hdfs_objects) == FILES_OVERHEAD + FILES_OVERHEAD_PER_PART_WIDE * 4
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